Patent Publication Number: US-2023156589-A1

Title: Cell selection, network selection, tracking area management, and paging for aerial operation

Description:
CROSS REFERENCE 
     The present Application for Patent is a Divisional of U.S. patent application Ser. No. 17/152,392 by PHUYAL et al., entitled “CELL SELECTION, NETWORK SELECTION, TRACKING ARA MANAGEMENT, AND PAGING FOR AERIAL OPERATION,” filed Jan. 19, 2021, assigned to the assignee hereof, and expressly incorporated by reference in its entirety herein. 
    
    
     FIELD OF TECHNOLOGY 
     The following relates to wireless communications, including cell selection, network selection, tracking area management, and paging for aerial operation. 
     BACKGROUND 
     Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long-Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). 
     A wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UEs). In some wireless communications systems, the UEs may include aerial UEs which may be devices capable of flying or maneuvering through the air. In such systems, it may be appropriate for the aerial UEs to communicate with a wireless network to facilitate operation in one or more states (e.g., an aerial state, a ground state, etc.). Efficient techniques at an aerial UE for communicating with a wireless network may be desirable. 
     SUMMARY 
     The described techniques relate to improved methods, systems, devices, and apparatuses that support cell selection, network selection, tracking area management, and paging for aerial operation. In one example, an aerial user equipment (UE) may receive an indication of a priority of each cell in a set of cells, where the priority is for cell selection for aerial UEs. The aerial UE may then select a cell from the set of cells based on the priority of each cell in the set of cells. In another example, an aerial UE may connect to both a network dedicated to aerial UEs for communications and a network available to aerial UEs and non-aerial UEs for auxiliary communications. In yet another example, when an aerial UE transitions to a new mission status, the aerial UE may transmit a tracking area update (TAU) if the aerial UE is connected to a cell in a tracking area that does not support the new mission status. In yet another example, a base station may page an aerial UE based on a mission status of the aerial UE. 
     A method for wireless communication at an aerial user equipment (UE) is described. The method may include receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs, receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs, identifying a mission status of the aerial UE, and selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     An apparatus for wireless communication at an aerial UE is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive first system information indicating a first priority of a first cell for cell selection for aerial UEs, receive second system information indicating a second priority of a second cell for cell selection for aerial UEs, identify a mission status of the aerial UE, and select the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     Another apparatus for wireless communication at an aerial UE is described. The apparatus may include means for receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs, means for receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs, means for identifying a mission status of the aerial UE, and means for selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     A non-transitory computer-readable medium storing code for wireless communication at an aerial UE is described. The code may include instructions executable by a processor to receive first system information indicating a first priority of a first cell for cell selection for aerial UEs, receive second system information indicating a second priority of a second cell for cell selection for aerial UEs, identify a mission status of the aerial UE, and select the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the first system information indicating the first priority of the first cell and the second system information indicating the second priority of the second cell may include operations, features, means, or instructions for receiving the first system information indicating a first set of multiple priorities of the first cell each corresponding to a different mission status of the aerial UE and receiving the second system information indicating a second set of multiple priorities of the second cell each corresponding to a different mission status of the aerial UE. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining to use the first priority of the first cell from the first set of multiple priorities of the first cell for cell selection based on the mission status of the aerial UE and determining to use the second priority of the second cell of the second set of multiple priorities of the second cell for cell selection based on the mission status of the aerial UE. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the mission status of the aerial UE includes an aerial state, a ground state, a pre-flight state, or a post-flight state. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first priority of the first cell corresponds to a first level of support for aerial UEs at the first cell, and the second priority of the second cell corresponds to a second level of support for aerial UEs at the second cell. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first cell or the second cell may be dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     A method for wireless communication at a base station is described. The method may include transmitting system information indicating a priority of a cell for cell selection for aerial UEs and connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     An apparatus for wireless communication at a base station is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit system information indicating a priority of a cell for cell selection for aerial UEs and connect to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     Another apparatus for wireless communication at a base station is described. The apparatus may include means for transmitting system information indicating a priority of a cell for cell selection for aerial UEs and means for connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to transmit system information indicating a priority of a cell for cell selection for aerial UEs and connect to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the system information indicating the priority of the cell may include operations, features, means, or instructions for transmitting the system information indicating a set of multiple priorities of the cell each corresponding to a different mission status of the aerial UE. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the different mission status of the aerial UE includes an aerial state, a ground state, a pre-flight state, or a post-flight state. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the priority of the cell for cell selection for aerial UEs includes a first priority and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting, in the system information, an indication of a second priority of the cell for cell selection for non-aerial UEs. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the priority of the cell corresponds to a level of support for aerial UEs at the cell. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the cell may be dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     A method for wireless communication at an aerial UE is described. The method may include receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs, receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs, and connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     An apparatus for wireless communication at an aerial UE is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive, in first system information from a first cell, an indication of a first network dedicated to aerial UEs, receive, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs, and connect to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Another apparatus for wireless communication at an aerial UE is described. The apparatus may include means for receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs, means for receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs, and means for connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     A non-transitory computer-readable medium storing code for wireless communication at an aerial UE is described. The code may include instructions executable by a processor to receive, in first system information from a first cell, an indication of a first network dedicated to aerial UEs, receive, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs, and connect to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that an amount of data for transmission to the first network via the first cell exceeds a threshold and transmitting a first portion of the data to the first network via the first cell and a second portion of the data to the second network via the first cell or the second cell based on the determining. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first portion of the data includes flight-operation data, and the second portion of the data includes payload data. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that an amount of data for transmission to the first network via the first cell may be below a threshold and transmitting the data to the first network via the first cell based on the determining. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the data includes flight-operation data and payload data. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting flight-operation data to the first network via the first cell and payload data to the second network via the second cell. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for connecting to the first network and to the second network may be based on the aerial UE being in an aerial state. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first network dedicated to aerial UEs supports emergency calls by aerial UEs, non-aerial UEs, or both. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first system information includes a first network identity list indicating the first network, and the second system information includes a second network identity list indicating the second network. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first system information includes a network identity list indicating the first network and the second network. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the aerial UE includes a first subscriber identity module and a second subscriber identity module and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for communicating with the first network via the first cell using the first subscriber identity module at the aerial UE and communicating with the second network via the first cell or the second cell using the second subscriber identity module at the aerial UE. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the aerial UE includes a single subscriber identity module and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for communicating, over a split bearer, with the first network via the first cell and the second network via the second cell using the single subscriber identity module at the aerial UE. 
     A method for wireless communication at an aerial UE is described. The method may include communicating with a cell in a tracking area while in a first mission status, determining to transition to a second mission status, and determining whether to transmit a tracking area update based on whether the tracking area supports the second mission status. 
     An apparatus for wireless communication at an aerial UE is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to communicate with a cell in a tracking area while in a first mission status, determine to transition to a second mission status, and determine whether to transmit a tracking area update based on whether the tracking area supports the second mission status. 
     Another apparatus for wireless communication at an aerial UE is described. The apparatus may include means for communicating with a cell in a tracking area while in a first mission status, means for determining to transition to a second mission status, and means for determining whether to transmit a tracking area update based on whether the tracking area supports the second mission status. 
     A non-transitory computer-readable medium storing code for wireless communication at an aerial UE is described. The code may include instructions executable by a processor to communicate with a cell in a tracking area while in a first mission status, determine to transition to a second mission status, and determine whether to transmit a tracking area update based on whether the tracking area supports the second mission status. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the cell includes a first cell and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for connecting to a second cell in a second tracking area if the first tracking area fails to support the second mission status and transmitting a tracking area update based on connecting to the second cell in the second tracking area. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first tracking area includes cells available to aerial UEs and non-aerial UEs and the second tracking area includes cells dedicated to aerial UEs. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for suppressing transmission of a tracking area update if the tracking area supports the second mission status. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the tracking area includes cells dedicated to aerial UEs. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the tracking area includes a first tracking area and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for suppressing transmission of a tracking area update if the cell supports the second mission status. 
     A method for wireless communication at a base station is described. The method may include identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs, determining a mission status of the aerial UE, and paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     An apparatus for wireless communication at a base station is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to identify that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs, determine a mission status of the aerial UE, and page the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     Another apparatus for wireless communication at a base station is described. The apparatus may include means for identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs, means for determining a mission status of the aerial UE, and means for paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to identify that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs, determine a mission status of the aerial UE, and page the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for paging the aerial UE via the first set of cells dedicated to aerial UEs in the tracking area if the aerial UE may be in an aerial state. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for paging the aerial UE via the first set of cells and the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for paging the aerial UE via the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    illustrates an example of a wireless communications system that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  2    illustrates an example of radio aspects of aerial user equipment (UE) communications in accordance with aspects of the present disclosure. 
         FIG.  3    illustrates an example of a wireless communications system that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  4    illustrates an example of a process flow that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  5    illustrates an example of a wireless communications system that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  6    illustrates an example of a process flow that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  7    illustrates an example of a wireless communications system that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  8    illustrates an example of a process flow that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  9    illustrates an example of a wireless communications system that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  10    illustrates an example of a process flow that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIGS.  11  and  12    show block diagrams of devices that support cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  13    shows a block diagram of a communications manager that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  14    shows a diagram of a system including a device that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIGS.  15  and  16    show block diagrams of devices that support cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  17    shows a block diagram of a communications manager that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIG.  18    shows a diagram of a system including a device that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
         FIGS.  19  through  23    show flowcharts illustrating methods that support cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Some wireless communications systems may support aerial user equipment (UEs) which may be devices capable of flying or maneuvering through the air. One example of an aerial UE is an unmanned aerial vehicle (UAV), which may also be referred to as a drone. In some cases, it may be appropriate for aerial UEs to support similar operations to non-aerial UEs when connected to a wireless network. For instance, it may be appropriate to enable 3GPP technologies (e.g., New Radio (NR)) for aerial UEs operating in a spectrum dedicated to the aerial UEs. In such cases, there may be a number of challenges to solve to facilitate smooth operation of aerial UEs in the wireless network. Such challenges may include cell selection, public land mobile network (PLMN) selection, tracking area management, and paging management for aerial UEs. Further, because the communication requirements of an aerial UE may change depending on a mission status in which the aerial UE is operating (e.g., an aerial state, a ground state, a pre-flight state, or a post-flight state), it may not be feasible to adopt operations used by non-aerial UEs for aerial UEs. 
     As described herein, a wireless communications system may support efficient techniques for cell selection, network selection, tracking area management, and paging for aerial operation. In one example, an aerial UE may receive an indication of a priority of each cell in a set of cells, where the priority is for cell selection for aerial UEs. The aerial UE may then select a cell from the set of cells based on the priority of each cell in the set of cells. In another example, an aerial UE may connect to both a network dedicated to aerial UEs for communications and a network available to aerial UEs and non-aerial UEs for auxiliary communications. In yet another example, when an aerial UE transitions to a new mission status, the aerial UE may transmit a tracking area update (TAU) if the aerial UE is connected to a cell in a tracking area that does not support the new mission status. In yet another example, a base station may page an aerial UE based on a mission status of the aerial UE. 
     Aspects of the disclosure introduced above are described below in the context of a wireless communications system. Examples of processes and signaling exchanges that support cell selection, network selection, tracking area management, and paging for aerial operation are then described. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to cell selection, network selection, tracking area management, and paging for aerial operation. 
       FIG.  1    illustrates an example of a wireless communications system  100  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The wireless communications system  100  may include one or more base stations  105 , one or more UEs  115 , and a core network  130 . In some examples, the wireless communications system  100  may be a Long-Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communications system  100  may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof. 
     The base stations  105  may be dispersed throughout a geographic area to form the wireless communications system  100  and may be devices in different forms or having different capabilities. The base stations  105  and the UEs  115  may wirelessly communicate via one or more communication links  125 . Each base station  105  may provide a coverage area  110  over which the UEs  115  and the base station  105  may establish one or more communication links  125 . The coverage area  110  may be an example of a geographic area over which a base station  105  and a UE  115  may support the communication of signals according to one or more radio access technologies. 
     The UEs  115  may be dispersed throughout a coverage area  110  of the wireless communications system  100 , and each UE  115  may be stationary, or mobile, or both at different times. The UEs  115  may be devices in different forms or having different capabilities. Some example UEs  115  are illustrated in  FIG.  1   . The UEs  115  described herein may be able to communicate with various types of devices, such as other UEs  115 , the base stations  105 , or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in  FIG.  1   . 
     The base stations  105  may communicate with the core network  130 , or with one another, or both. For example, the base stations  105  may interface with the core network  130  through one or more backhaul links  120  (e.g., via an S1, N2, N3, or other interface). The base stations  105  may communicate with one another over the backhaul links  120  (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations  105 ), or indirectly (e.g., via core network  130 ), or both. In some examples, the backhaul links  120  may be or include one or more wireless links. 
     One or more of the base stations  105  described herein may include or may be referred to by a person having ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology. 
     A UE  115  may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, an aerial device, a UAV, a drone, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE  115  may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, a UE  115  may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples. 
     The UEs  115  described herein may be able to communicate with various types of devices, such as other UEs  115  that may sometimes act as relays as well as the base stations  105  and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in  FIG.  1   . 
     The UEs  115  and the base stations  105  may wirelessly communicate with one another via one or more communication links  125  over one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links  125 . For example, a carrier used for a communication link  125  may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP)) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system  100  may support communication with a UE  115  using carrier aggregation or multi-carrier operation. A UE  115  may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. 
     In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN)) and may be positioned according to a channel raster for discovery by the UEs  115 . A carrier may be operated in a standalone mode where initial acquisition and connection may be conducted by the UEs  115  via the carrier, or the carrier may be operated in a non-standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology). 
     The communication links  125  shown in the wireless communications system  100  may include uplink transmissions from a UE  115  to a base station  105  (e.g., in a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH)), or downlink transmissions from a base station  105  to a UE  115  (e.g., in a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH)). Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode). 
     Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements that a UE  115  receives and the higher the order of the modulation scheme, the higher the data rate may be for the UE  115 . A wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE  115 . 
     The time intervals for the base stations  105  or the UEs  115  may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of T s =1/(Δf max ·N f ) seconds, where Δf max  may represent the maximum supported subcarrier spacing, and N f  may represent the maximum supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023). 
     Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on subcarrier spacing. Each slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). In some wireless communications systems  100 , a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation. 
     A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system  100  and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system  100  may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)). 
     Physical channels may be multiplexed on a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs  115 . For example, one or more of the UEs  115  may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs  115  and UE-specific search space sets for sending control information to a specific UE  115 . 
     Each base station  105  may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with a base station  105  (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or others). In some examples, a cell may also refer to a geographic coverage area  110  or a portion of a geographic coverage area  110  (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the base station  105 . For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with geographic coverage areas  110 , among other examples. 
     A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs  115  with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered base station  105 , as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs  115  with service subscriptions with the network provider or may provide restricted access to the UEs  115  having an association with the small cell (e.g., the UEs  115  in a closed subscriber group (CSG), the UEs  115  associated with users in a home or office). A base station  105  may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers. 
     In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access for different types of devices. 
     In some examples, a base station  105  may be movable and therefore provide communication coverage for a moving geographic coverage area  110 . In some examples, different geographic coverage areas  110  associated with different technologies may overlap, but the different geographic coverage areas  110  may be supported by the same base station  105 . In other examples, the overlapping geographic coverage areas  110  associated with different technologies may be supported by different base stations  105 . The wireless communications system  100  may include, for example, a heterogeneous network in which different types of the base stations  105  provide coverage for various geographic coverage areas  110  using the same or different radio access technologies. 
     The wireless communications system  100  may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system  100  may be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications. The UEs  115  may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission critical functions). Ultra-reliable communications may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT), mission critical video (MCVideo), or mission critical data (MCData). Support for mission critical functions may include prioritization of services, and mission critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission critical, and ultra-reliable low-latency may be used interchangeably herein. 
     In some examples, a UE  115  may also be able to communicate directly with other UEs  115  over a device-to-device (D2D) communication link  135  (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs  115  utilizing D2D communications may be within the geographic coverage area  110  of a base station  105 . Other UEs  115  in such a group may be outside the geographic coverage area  110  of a base station  105  or be otherwise unable to receive transmissions from a base station  105 . In some examples, groups of the UEs  115  communicating via D2D communications may utilize a one-to-many (1:M) system in which each UE  115  transmits to every other UE  115  in the group. In some examples, a base station  105  facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between the UEs  115  without the involvement of a base station  105 . 
     In some systems, the D2D communication link  135  may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs  115 ). In some examples, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., base stations  105 ) using vehicle-to-network (V2N) communications, or with both. 
     The core network  130  may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network  130  may be an evolved packet core (EPC) or 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs  115  served by the base stations  105  associated with the core network  130 . User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services  150  for one or more network operators. The IP services  150  may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet-Switched Streaming Service. 
     Some of the network devices, such as a base station  105 , may include subcomponents such as an access network entity  140 , which may be an example of an access node controller (ANC). Each access network entity  140  may communicate with the UEs  115  through one or more other access network transmission entities  145 , which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs). Each access network transmission entity  145  may include one or more antenna panels. In some configurations, various functions of each access network entity  140  or base station  105  may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station  105 ). 
     The wireless communications system  100  may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. The UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs  115  located indoors. The transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz. 
     The wireless communications system  100  may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communications system  100  may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in unlicensed radio frequency spectrum bands, devices such as the base stations  105  and the UEs  115  may employ carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples. 
     A base station  105  or a UE  115  may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a base station  105  or a UE  115  may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a base station  105  may be located in diverse geographic locations. A base station  105  may have an antenna array with a number of rows and columns of antenna ports that the base station  105  may use to support beamforming of communications with a UE  115 . Likewise, a UE  115  may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port. 
     The base stations  105  or the UEs  115  may use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices. 
     Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station  105 , a UE  115 ) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation). 
     Some UEs  115  in wireless communications system  100  may be aerial UEs capable of flying or maneuvering through the air. Such aerial UEs may support uplink or downlink communications with one or more cells or sidelink communications with each other. To facilitate the uplink, downlink, and sidelink communications by aerial UEs, wireless communications system  100  may define a spectrum dedicated to aerial UEs. The dedicated spectrum may be for uplink and downlink communications between aerial UEs and one or more cells (e.g., over a Uu interface), or the dedicated spectrum may be for sidelink communications between aerial UEs (e.g., over a PC5 interface). In addition to the dedicated spectrum, aerial UEs may operate in other wireless spectrums. The wireless communications system may support efficient techniques for operation of aerial UEs in dedicated spectrum and other spectrums. An aerial UE may be, for example, a UAV or drone, or a UE installed in a UAV or drone. 
       FIG.  2    illustrates an example of radio aspects  200  of aerial UE communications in accordance with aspects of the present disclosure. In the example of  FIG.  2   , an aerial UE  205 - a  may establish a connection  225  (e.g., Uu connectivity) with a cell  210 , and the aerial UE  205 - a  may communicate with the cell  210  to support different applications (e.g., video, remote command and control (C2), etc.). The aerial UE  205 - a  may also establish a connection  230  (e.g., PC5) connection with another aerial UE  205 - b,  and the aerial UE  205 - a  may communicate with the aerial UE  205 - b  to support other applications. Examples of such other applications include user-to-everything (U2X) detect and avoid (U2X-DAA) applications and other applications mainly used for collision control (e.g., using broadcast messages). 
     In some examples, the aerial UE  205 - b  may also interact (e.g., over a connection  235 , such as a PC5 connection) with a law enforcement officer  215  or service for identification and other purposes. As an example, the aerial UE  205 - b  may interact with the law enforcement officer  215  or service for U2X identification (ID) (e.g., remote identification), and the aerial UE  205 - b  may identify or receive flight information from the law enforcement officer  215  or service (e.g., using broadcast messages). In other examples, the aerial UE  205 - b  may establish a connection  240  with a remote control  220  for remote command and control (C2). In some cases, the connection  240  may be within visual line of sight while in other cases the connection  240  may be beyond visual line of sight (e.g., up to 10 km or beyond). The connection  240  may be referred to as a U2X-C2 connection and may be, for example, a PC5, bidirectional connection. 
     In some cases, it may be appropriate for aerial UEs to support similar operations to non-aerial UEs when connected to a wireless network. For instance, it may be appropriate to enable 3GPP technologies (e.g., New Radio (NR)) for aerial UEs operating in a spectrum dedicated to the aerial UEs (e.g., UAV dedicated spectrum). In such cases, there may be a number of challenges to solve to facilitate smooth operation of aerial UEs in the wireless network. Such challenges may include cell selection, PLMN selection, tracking area management, and paging management for aerial UEs. Further, because the communication requirements of an aerial UE may change depending on a mission status in which the aerial UE is operating (e.g., an aerial state, a ground state, a pre-flight state, or a post-flight state), it may not be feasible to adopt operations used by non-aerial UEs for aerial UEs. 
     Wireless communications system  100  may support efficient techniques for cell selection, network selection, tracking area management, and paging for aerial operation. In one example, an aerial UE may receive an indication of a priority of each cell in a set of cells, where the priority is for cell selection for aerial UEs. The aerial UE may then select a cell from the set of cells based on the priority of each cell in the set of cells. In another example, an aerial UE may connect to both a network dedicated to aerial UEs for communications and a network available to aerial UEs and non-aerial UEs for auxiliary communications. In yet another example, when an aerial UE transitions to a new mission status, the aerial UE may transmit a TAU if the aerial UE is connected to a cell in a tracking area that does not support the new mission status. In yet another example, a base station may page an aerial UE based on a mission status of the aerial UE. 
     As described above, aerial UEs may be UEs  115  capable of flying or maneuvering through the air. An aerial UE, while capable of being in flight, need not be airborne in order to access the resources or cells reserved for aerial UEs. For instance, it may be equally important for a drone (e.g., aerial UE) on the ground to be able to access the resources or cells reserved for aerial UEs. Further, the type for a UE may be either aerial or non-aerial, and the type may be fixed. That is, non-aerial UEs may be UEs  115  that are not configured as aerial UEs (e.g., not capable of aerial operation). 
     In the examples described herein, communications with aerial UEs may be referred to as aerial communications, and aerial communications may include uplink or downlink communications between aerial UEs and one or more cells, or sidelink communications between aerial UEs. In addition, cells exclusively supporting aerial communications (e.g., dedicated to aerial UEs) may be referred to as aerial cells, and cells supporting aerial communications and communications with non-aerial UEs (e.g., cells available to aerial UEs and non-aerial UEs) may be referred to as hybrid cells. Further, a spectrum, frequency band, carrier, or resource dedicated to aerial UEs may be allocated exclusively for aerial communications and may be referred to as an aerial, aerial-only or aerial-UE-only spectrum, frequency band, carrier, or resource. Similarly, a spectrum, frequency band, carrier, or resource available to aerial UEs and non-aerial UEs may be referred to as a non-aerial spectrum, frequency band, carrier, or resource. An aerial UE may prioritize communications with aerial cells but may communicate with hybrid cells when aerial cells are unavailable. Hybrid cells may operate in both dedicated aerial bands and non-aerial bands. 
       FIG.  3    illustrates an example of a wireless communications system  300  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Wireless communications system  300  includes an aerial UE  305 , a cell  310  dedicated to aerial UEs (e.g., an aerial cell), a cell  315  available to aerial UEs and non-aerial UEs (e.g., a hybrid cell), and a non-aerial UE  320 . The wireless communications system  300  may indicate that the cell  310  is for aerial UE use only to prevent non-aerial UEs from camping on the cell  310 . Thus, the aerial UE  305  may be able to establish a connection  325  with the cell  310 , but the non-aerial UE  320  may be unable to establish a connection with the cell  310 . Alternatively, because the cell  315  may be available to aerial UEs and non-aerial UEs, the aerial UE  305  may be able to establish a connection  330  with the cell  315 , and the non-aerial UE  320  may be able to establish a connection  335  with the cell  315 . 
     In the example of  FIG.  3   , a service-specific cell selection or reselection priority of a cell may be defined for aerial UEs, including the aerial UE  305 . The service-specific cell selection or reselection priority may refer to a priority of a cell used exclusively by aerial UEs for cell selection or reselection (e.g., aerial-UE-specific priority) and may differ from another priority of the cell used by any UE for cell selection or reselection. 
     A cell may broadcast a priority for cell selection or reselection by aerial UEs, and an aerial UE may prioritize the cell for selection or reselection based on the broadcasted priority. For instance, the cell  310  may transmit, and the aerial UE  305  may receive, system information over the connection  325  indicating a first priority for cell selection for the aerial UE  305 , and the cell  315  may transmit, and the aerial UE  305  may receive, system information over the connection  330  indicating a second priority for cell selection for the aerial UE  305 . Because the cell  310  may be dedicated to aerial UEs, the first priority broadcast by the cell  310  may be higher than the second priority broadcast by the cell  315 . 
     On the network side, the cell priority configuration (e.g., the priority of a cell for cell selection for aerial UEs) may be based on a level of support that can be provided for aerial UEs. For example, the cell priority configuration of a cell may be based on the availability of aerial-UE-specific enhancements in the cell, such as power control, interference mitigation features, or the bands being used by the cell. Thus, if another cell has a higher level of support for aerial UEs than the cell  310 , the priority broadcast by the other cell may be higher than the first priority broadcast by the cell  310 . 
     On the aerial UE side, the cell selection prioritization (e.g., the prioritization of cells for cell selection) may also depend on a mission status or state of the aerial UE  305 . The aerial UE  305  may operate in one of a number of states, including an aerial state (e.g., flying), a ground state, a pre-flight state, a post-flight state, etc. When the aerial UE  305  is in a ground state or a pre-flight state, the aerial UE  305  may use any band (e.g., and a corresponding cell supporting the band) for connectivity (e.g., UAV unmanned aircraft system (UAS) service supplier (USS) connectivity) since traffic to or from the aerial UE  305  may not be for C2. Once the mission status of the aerial UE  305  changes (e.g., to an aerial state), and the aerial UE  305  is expected to receive C2 signals via cellular communications, the aerial UE  305  may prioritize bands dedicated to aerial UEs for aerial communications (e.g., and the corresponding cells supporting these bands). 
       FIG.  4    illustrates an example of a process flow  400  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Process flow  400  includes an aerial UE  405 , a first cell  410 , and a second cell  415 , which may be examples of corresponding device described with reference to  FIGS.  1 - 3   . In the following description of the process flow  400 , the signaling exchanged between the aerial UE  405 , the first cell  410 , and the second cell  415  may be exchanged in a different order than the example order shown, or the operations performed by the aerial UE  405 , the first cell  410 , and the second cell  415  may be performed in different orders or at different times. Some operations may also be omitted from the process flow  400 , and other operations may be added to the process flow  400 . 
     At  420 , the first cell  410  may transmit, and the aerial UE  405  may receive, first system information indicating a first priority of the first cell  410  for cell selection for aerial UEs. At  425 , the second cell  415  may transmit, and the aerial UE  405  may receive, second system information indicating a second priority of the second cell  415  for cell selection for aerial UEs. At  430 , the aerial UE  405  may identify a mission status of the aerial UE  405  (e.g., a state in which the aerial UE  405  is operating, such as an aerial state, ground state, pre-flight state, post-flight state, etc.). At  435 , the aerial UE  405  may select the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, or the mission status of the aerial UE  405 . For example, the aerial UE  405  may apply the priorities of the first cell  410  and second cell  415  for cell selection for aerial UEs regardless of the mission status. Alternatively, the aerial UE  405  may apply the priorities of the first cell  410  and second cell  415  for cell selection for aerial UEs when the aerial UE  405  is in an aerial state. Additionally, or alternatively, the aerial UE  405  may perform the cell selection dependent on a type of traffic. For example, if the type of traffic is not for C2 communications, the aerial UE  405  may perform the cell selection without applying the priorities of the first cell  410  and second cell  415  for aerial UEs (e.g., applying a default or non-aerial priority for each cell). If the type of traffic is for C2, the aerial UE  405  may apply the priorities of the first cell  410  and second cell  415  for cell selection for aerial UEs. If, at  435 , the aerial UE  405  selected the first cell  410 , then, at  440 , the aerial UE  405  may communicate (e.g., exchange data) with the first cell  410 . Additionally, or alternatively, if, at  435 , the aerial UE  405  selected the second cell  415 , then, at  445 , the aerial UE  405  may communicate (e.g., exchange data) with the second cell  415 . 
     In some cases, the first system information may indicate multiple priorities of the first cell  410  each corresponding to a different mission status of the aerial UE  405 . In such cases, the aerial UE  405  may determine to use the first priority of the first cell  410  from the multiple priorities based on a mission status of the aerial UE  405 . Additionally, or alternatively, the aerial UE  405  may select a cell based on a priority of the cell for cell selection for aerial UEs (e.g., the aerial-UE-specific priority) if the aerial UE  405  is in a particular state (e.g., an aerial state). Similarly, in some cases, the second system information may indicate multiple priorities of the second cell  415  each corresponding to a different mission status of the aerial UE  405 . In such cases, the aerial UE  405  may determine to use the second priority of the second cell  415  from the multiple priorities based on a mission status of the aerial UE  405 . Additionally, or alternatively, the aerial UE  405  may select a cell based on a priority of the cell for cell selection for aerial UEs (e.g., the aerial-UE-specific priority) if the aerial UE  405  is in a particular state (e.g., an aerial state). 
     As described with reference to  FIG.  3   , the first priority of the first cell  410  may correspond to a first level of support for aerial UEs at the first cell  410 , and the second priority of the second cell  415  may correspond to a second level of support for aerial UEs at the second cell  415 . The first cell  410  or the second cell  415  may be dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. Further, the first priority of the first cell  410  may be different from a second priority of the first cell  410  used for cell selection by any UE  115  (e.g., not only aerial UEs). The first cell  410  may transmit, in the first system information, an indication of the second priority of the first cell  410  for cell selection for all UEs  115  (e.g., including non-aerial UEs). 
       FIG.  5    illustrates an example of a wireless communications system  500  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Wireless communications system  500  includes a first PLMN  505 , a second PLMN  510 , a first cell  515 , a second cell  520 , and an aerial UE  525 . The first PLMN  505  may be dedicated to aerial UEs and may be referred to as an aerial-only PLMN, and the second PLMN  510  may be available for aerial UEs and non-aerial UEs. A cell may be a part of the first PLMN, a part of the second PLMN, or both. In some examples, aerial-only PLMNs may be associated with UAV dedicated frequency bands. Aerial UEs may be restricted to UAV dedicated frequency bands in some areas, and thus may be restricted to using certain PLMNs in certain areas. In some examples, the aerial UE  525  may prioritize the first PLMN  550  when available, and the aerial UE  525  may take the capability of a network into account when performing network selection (e.g., if the PLMN supports aerial communications, especially for roaming cases). 
     In  FIG.  5   , the first cell  515  may be associated with only the first PLMN  505 , and the second cell  520  may be associated with the second PLMN  510 . In such cases, the aerial UE  525  may establish a connection  530  with the first cell  515  or the second cell  520 , or both. In other cases, the first cell  515  may be associated with the first PLMN  505  and the second PLMN  510 . In such cases, the aerial UE  525  may establish the connection  530  with the first cell  515  for communications including both flight operations (e.g., C2 communications) and payload communications (e.g., video, non-flight operations data). 
     In certain areas, the aerial UE  525  may be allowed to select any bands available for communication, such as bands used for communicating with the second PLMN  510 . In other areas, the aerial UE  525  may be restricted to specific bands, such as bands used for communicating with the first PLMN  505  (e.g., dedicated aerial bands). The aerial UE  525  may know the airspace type in which the aerial UE  525  is operating (e.g., based on a preconfiguration indicating that a certain location corresponds to a specific airspace type or based on receiving an indication of the airspace type from a USS when a flight plan is approved). Some PLMNs may be specific to aerial services (e.g., aerial-only PLMNs), and other PLMNs may support other services. For instance, the first PLMN  505  may be dedicated to aerial UEs and the second PLMN  510  may be available for aerial UEs and non-aerial UEs. 
     PLMN selection by the aerial UE  525  may depend on a state of the aerial UE  525  (e.g., flying vs non-flying or on a mission vs on the ground). As an example, when the aerial UE  525  is on the ground performing a software update, the software update may be done via a network operating on a non-aerial band (e.g., a band available to aerial UEs and non-aerial UEs). A dedicated aerial band (e.g., a band dedicated to aerial UEs) may be prioritized only for aerial flight operation. Thus, PLMN selection by the aerial UE  525  may depend on a service required or desired by the aerial UE  525 . In some cases, regulators may indicate that aerial UEs may use bands dedicated to aerial UEs (e.g., aerial bands) for flight operations (e.g., C2 communications) and may restrict commercial payload (e.g., video transmission from a surveillance camera on a drone) to be over bands or PLMNs available to aerial UEs and non-aerial UEs (e.g., non-aerial bands). 
     If the first cell  515  is associated with only the first PLMN  505 , and the second cell is associated with the second PLMN  510 , the first cell  515  may transmit, and the aerial UE  525  may receive, system information over the connection  530  identifying the first PLMN  505 , and the second cell  520  may transmit, and the aerial UE  525  may receive, system information over the connection  535  identifying the second PLMN  510 . If the first cell  515  is associated with the first PLMN  505  and the second PLMN  510 , the first cell  515  may transmit, and the aerial UE  525  may receive, system information over the connection  530  identifying the first PLMN  505  and the second PLMN  510 . Each system information transmission may correspond to a system information block (SIB) and may include a PLMN-identity list identifying one or more PLMNs. Alternatively, the SIB (e.g., SIB1) may include an aerial-specific PLMN-identity list identifying PLMNs dedicated to aerial UEs. 
     In any case, the aerial UE  525  may select either the first PLMN  505 , the second PLMN  510 , or both for subsequent communications based on a mission status of the aerial UE  525 , the first PLMN  505  being dedicated to aerial UEs, and the second PLMN  510  being available to aerial UEs and non-aerial UEs. In some aspects, the aerial UE  525  may connect to the first PLMN  505  for communications via the first cell and to the second PLMN  510  for auxiliary communications via the first cell or the second cell. Auxiliary communications may refer to communications other than flight operations (e.g., C2 communications), such as payload communications (e.g., video data, sensor data, or other non-flight operations related data). 
     In one example, the wireless communications system  500  may define a throughput limit or data-rate limit or threshold for operation over aerial bands supported by the first PLMN  505 . The throughput or data-rate threshold may be defined such that the aerial UE  525  may utilize the connection for the first PLMN if a throughput or data-rate required to support all services (e.g., at the aerial UE  525 ) is below the threshold. Otherwise, the aerial UE  525  may move the signaling of commercial payloads over to the second PLMN  510 . In some cases, the first PLMN may operate in bands dedicated for aerial communications and the second PLMN may operate in non-aerial bands (e.g., bands available to aerial UEs and non-aerial UEs). 
     In another example, the regulators may determine to avoid a mix of different types of traffic on any bands. That is, the regulators may not want a mix of flight operation traffic and commercial payloads at any level. In this example, it may be appropriate for the aerial UE  525  to support simultaneous communications with the first PLMN  505  and the second PLMN  510  (e.g., dual PLMN). The aerial UE  525  may support dual subscriber identity module (SIM) dual active (DSDA), and the aerial UE  525  may communicate with the first PLMN  505  via a first SIM and the second PLMN  510  via a second SIM. That is, the aerial UE  525  may have different subscriber identities and different subscriptions for the connections associated with the first PLMN  505  and the second PLMN  510 . Alternatively, the aerial UE  525  may support a split bearer, and the aerial UE  525  may communicate with the first PLMN  505  and the second PLMN  510  using the split bearer (e.g., using a same SIM). 
     In some cases, the first PLMN  505  (e.g., aerial-only PLMN) may not support emergency calls. In other cases, however, the first PLMN  505  may support emergency calls. In the event that aerial UEs support making emergency calls, the aerial UEs may be allowed to use the first PLMN  505  as well as other PLMNs supporting emergency calls (e.g., the second PLMN  510 ) as needed to make the emergency calls. Further, emergency calls may be supported for non-aerial UEs via the first PLMN (e.g., when the first PLMN is the only available network). 
       FIG.  6    illustrates an example of a process flow  600  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Process flow  600  includes an aerial UE  605 , a first PLMN  610 , a second PLMN  615 , a first cell  620 , and a second cell  625 , which may be examples of corresponding devices described with reference to  FIGS.  1 - 5   . In the following description of the process flow  600 , the signaling exchanged between the aerial UE  605 , the first cell  620 , and the second cell  625  may be exchanged in a different order than the example order shown, or the operations performed by the aerial UE  605 , the first cell  620 , and the second cell  625  may be performed in different orders or at different times. Some operations may also be omitted from the process flow  600 , and other operations may be added to the process flow  600 . 
     At  630 , the first cell may transmit, and the aerial UE  605  may receive, first system information, and, at  635 , the second cell may transmit, and the aerial UE  605  may receive, second system information. The aerial UE  605  may receive, in the first system information from the first cell  620 , an indication of the first PLMN  610  dedicated to aerial UEs. The aerial UE  605  may also receive, in the first system information from the first cell  620  or in the second system information from the second cell  625 , an indication of the second PLMN  615  available to aerial UEs and non-aerial UEs. The aerial UE  605  may then connect to the first PLMN  610  for communications via the first cell and to the second PLMN  615  for auxiliary communications via the first cell or the second cell. In some examples, the aerial UE  605  may connect to the first PLMN  610  and the second PLMN  615  based on the aerial UE  605  being in an aerial state. 
     In some cases, the aerial UE  605  may determine that the amount of data for transmission to the first PLMN  610  via the first cell  620  exceeds the threshold. In such cases, the aerial UE  605  may transmit a first portion of the data to the first network via the first cell and a second portion of the data to the second network via the first cell or the second cell. If the first cell  620  is connected to only the first PLMN  610 , then, at  640 , the aerial UE  605  may transmit flight operation data and potentially some auxiliary data to the first PLMN  610  via the first cell  620 , and, at  645 , the aerial UE  605  may transmit any remaining auxiliary data to the second PLMN  615  via the second cell  625 . Alternatively, if the first cell  620  is connected to both the first PLMN  610  and the second PLMN  615 , then, at  640 , the aerial UE  605  may transmit flight operation data and potentially some auxiliary data to the first PLMN  610  via the first cell  620 , and the aerial UE  605  may transmit any remaining auxiliary data to the second PLMN  615  via the first cell  620 . 
     In other cases, the aerial UE  605  may determine that the amount of data for transmission to the first PLMN  610  via the first cell  620  is below the threshold. In such cases, the aerial UE  605  may transmit the data to the first PLMN  610  via the first cell  620 . Specifically, at  640 , the aerial UE  605  may transmit flight operation data and potentially some auxiliary data to the first PLMN  610  via the first cell  620 . In yet other cases, the aerial UE  605  may simply be configured to transmit flight operation data to the first PLMN  610  and auxiliary data to the second PLMN  615 . In such cases, if the first cell  620  is connected to only the first PLMN  610 , then, at  640 , the aerial UE  605  may transmit flight operation data to the first PLMN  610  via the first cell  620 , and, at  645 , the aerial UE  605  may transmit auxiliary data to the second PLMN  615  via the second cell  625 . Alternatively, if the first cell  620  is connected to the first PLMN  610  and the second PLMN  615 , then, at  640 , the aerial UE  605  may transmit flight operation data to the first PLMN  610  via the first cell  620 , and, at  645 , the aerial UE  605  may transmit auxiliary data to the second PLMN  615  via the first cell  620 . 
     In some aspects, the first PLMN may support emergency calls by aerial UEs, non-aerial UEs, or both. In some aspects, the first system information (e.g., at  630 ) includes a first network identity list indicating the first PLMN  610 , and the second system information (e.g., at  635 ) includes a second network identity list indicating the second PLMN  615 . In some aspects, the aerial UE  605  may communicate with the first PLMN  610  via the first cell  620  using a first SIM, and the aerial UE  605  may communicate with the second PLMN  615  via the second cell  625  using a second SIM. In some aspects, the aerial UE  605  may communicate with the first PLMN  610  via the first cell  620  and the second PLMN  615  via the second cell  625  over a split bearer using a single SIM. 
       FIG.  7    illustrates an example of a wireless communications system  700  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Wireless communications system  700  includes a first tracking area  705 , a second tracking area  710 , a first cell  715 , a second cell  720 , a third cell  725 , and an aerial UE  730 . When the aerial UE  730  is in operation (e.g., flying), the aerial UE  730  may be in a connected mode, idle mode, or inactive mode. The wireless communications system  700  (e.g., network) may be able to page the aerial UE  730  regardless of the mission status of the aerial UE  730  (e.g., whether the aerial UE  730  is on the ground or in the sky). 
     The first tracking area  705  or the second tracking area  710  may consist of only cells dedicated to aerial UEs (e.g., aerial cells) or cells dedicated to aerial UEs and cells available to aerial UEs and non-aerial UEs (e.g., hybrid cells). In some cases, wireless communications system  700  may support non-mixed tracking areas, where the first tracking area  705  consists of cells supporting communications on bands dedicated to aerial UEs, and the second tracking area  710  consists of cells supporting communications on bands available to aerial UEs and non-aerial UEs. In such cases, a cell available to aerial UEs and non-aerial UEs (e.g., a hybrid cell, such as the second cell  720 ) may belong to both the first tracking area  705  and the second tracking area  710  (e.g., a cell may belong to an aerial tracking area and a non-aerial tracking area). 
     In  FIG.  7   , the first tracking area  705  may include only cells available to aerial UEs and non-aerial UEs, and the second tracking area  710  may include one or more cells dedicated to aerial UEs. Thus, the second tracking area  710  may support communications with the aerial UE  730  when the aerial UE  730  is in an aerial state, and the second tracking area may be said to support the aerial state. The aerial UE  730  may either be in communication with the first cell  715 , the second cell  720 , or the third cell  725  while operating in a ground state. The aerial UE  730  may then determine to transition to an aerial state. After transitioning to the aerial state, it may be appropriate for the aerial UE  730  to determine whether to transmit a TAU. 
     If the aerial UE  730  is in communication with the first cell  715 , and the first tracking area  705  fails to support the aerial state, the aerial UE  730  may connect to a cell in the second tracking area  710  since the second tracking area  710  supports the aerial state. The aerial UE  730  may then transmit a TAU based on connecting to the cell in the second tracking area  710 . If the aerial UE  730  is in communications with the second cell  720 , the aerial UE  730  may suppress transmission of a TAU based on the second cell  720  being in the second tracking area  710  that supports the aerial state. If the aerial UE is in communications with the third cell  725 , the aerial UE  730  may also suppress transmission of a TAU based on the third cell  725  being in the second tracking area  710  that supports the aerial state. Thus, if the aerial UE  730  is in communications with the second cell  720  or the third cell  725 , there should be no need to update a tracking area because of a change in mission status (e.g., from non-flying to flying). Because the aerial UE  730  may have to connect to a cell in a different tracking area after changing mission statuses, the aerial UE  730  may transmit or suppress transmission of a TAU based on changing mission statuses. 
       FIG.  8    illustrates an example of a process flow  800  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Process flow  800  includes an aerial UE  805  and a cell  810  in a tracking area, which may be examples of corresponding devices described with reference to  FIGS.  1 - 7   . In the following description of the process flow  800 , the signaling exchanged between the aerial UE  805  and the cell  810  may be exchanged in a different order than the example order shown, or the operations performed by the aerial UE  805  and the cell  810  may be performed in different orders or at different times. Some operations may also be omitted from the process flow  800 , and other operations may be added to the process flow  800 . 
     At  815 , the aerial UE  805  may communicate (e.g., exchange data) with the cell  810  in the tracking area while in a first mission status. At  820 , the aerial UE  805  may determine to transition to a second mission status. At  825 , the aerial UE  805  may determine whether to transmit a TAU based on whether the tracking area (e.g., that includes the cell  810 ) supports the second mission status. 
     In one aspect, the aerial UE  805  may connect to another cell in another tracking area if the tracking area fails to support the second mission status, and, at  830 , the aerial UE  805  may transmit a TAU based on connecting to the other cell in the other tracking area. In this aspect, the tracking area may include cells available to aerial UEs, and the other tracking area may include cells dedicated to aerial UEs. In another aspect, the aerial UE  805  may suppress transmission of a TAU if the tracking area supports the second mission status. In this aspect, the tracking area may include cells dedicated to aerial UEs. In yet another aspect, the aerial UE  805  may suppress transmission of a TAU if the cell  810  is also in another tracking area that supports the second mission status. 
       FIG.  9    illustrates an example of a wireless communications system  900  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Wireless communications system  900  includes a tracking area  905 , a first set of cells  910  dedicated to aerial UEs, a second set of cells  915  available to aerial UEs and non-aerial UEs, and an aerial UE  920 . The aerial UE  920  may be operating in an aerial state. Because the tracking area  905  may include the first set of cells  910  dedicated to aerial UEs and the second set of cells  915  available to aerial UEs and non-aerial UEs, the tracking area  905  may be referred to as a mixed tracking area. In the case of a mixed tracking area (e.g., a tracking area consisting of both aerial cells and non-aerial cells), if a network is aware of a mission status of an aerial UE, the network may use the mission status in a paging decision. 
     In  FIG.  9   , a base station  105  (e.g., a network) may first page the aerial UE  920  via the first set of cells  910  dedicated to aerial UEs (e.g., the aerial-only cells). If the aerial UE  920  fails to respond to the paging via the first set of cells  910  (e.g., the base station  105  fails to receive a response from the aerial UE  920  to the paging via the first set of cells  910 ), the base station  105  may page the aerial UE  920  via the first set of cells  910  dedicated to aerial UEs and the second set of cells  915  available to aerial UEs and non-aerial UEs. That is, the base station  105  may expand a paging area to the whole tracking area  905  or service area. Alternatively, if the aerial UE  920  fails to respond to the paging via the first set of cells  910  (e.g., the base station  105  fails to receive a response from the aerial UE  920  to the paging via the first set of cells  910 ), the base station  105  may page the aerial UE  920  via the second set of cells  915  available to aerial UEs and non-aerial UEs. Because the aerial UE  920  may be connected to a cell dedicated to aerial UEs when in an aerial state (e.g., flying status), the paging via the first set of cells  910  is likely to be successful. That is, the base station  105  may use the flying status of the aerial UE  920  in a paging decision (e.g., for paging). 
       FIG.  10    illustrates an example of a process flow  1000  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. Process flow  1000  includes an aerial UE  1005 , a base station  1010 , a first set of cells  1015  dedicated to aerial UEs, and a second set of cells  1020  available to aerial UEs and non-aerial UEs. In the following description of the process flow  1000 , the signaling exchanged between the aerial UE  1005  and the base station  1010  via the first set of cells  1015  or the second set of cells  1020  may be exchanged in a different order than the example order shown, or the operations performed by the aerial UE  1005  and the base station  1010  may be performed in different orders or at different times. Some operations may also be omitted from the process flow  1000 , and other operations may be added to the process flow  1000 . 
     The base station  1010  may identify that the aerial UE  1005  is connected to a cell within a tracking area, where the tracking area includes the first set of cells  1015  dedicated to aerial UEs and the second set of cells  1020  available to aerial UEs and non-aerial UEs. At  1025 , the base station  1010  may determine a mission status of the aerial UE  1005 . The base station  1010  may then page the aerial UE  1005  based on the mission status of the aerial UE  1005 . At  1030 , the base station  1010  may page the aerial UE  1005  via the first set of cells  1015  dedicated to aerial UEs in the tracking area if the aerial UE  1005  is in an aerial state. At  1035 , the base station  1010  may then page the aerial UE  1005  via the first set of cells  1015  and the second set of cells  1020  if the base station  1010  failed to receive a response to the paging via the first set of cells  1015  dedicated to aerial UEs. Alternatively, at  1035 , the base station  1010  may page the aerial UE  1005  via the second set of cells  1020  if the base station  1010  failed to receive a response to the paging via the first set of cells  1015  dedicated to aerial UEs. 
       FIG.  11    shows a block diagram  1100  of a device  1105  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1105  may be an example of aspects of a UE  115  as described herein. The device  1105  may include a receiver  1110 , a transmitter  1115 , and a communications manager  1120 . The device  1105  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1110  may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). Information may be passed on to other components of the device  1105 . The receiver  1110  may utilize a single antenna or a set of multiple antennas. 
     The transmitter  1115  may provide a means for transmitting signals generated by other components of the device  1105 . For example, the transmitter  1115  may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). In some examples, the transmitter  1115  may be co-located with a receiver  1110  in a transceiver module. The transmitter  1115  may utilize a single antenna or a set of multiple antennas. 
     The communications manager  1120 , the receiver  1110 , the transmitter  1115 , or various combinations thereof or various components thereof may be examples of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1120 , the receiver  1110 , the transmitter  1115 , or various combinations or components thereof may support a method for performing one or more of the functions described herein. 
     In some examples, the communications manager  1120 , the receiver  1110 , the transmitter  1115 , or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory). 
     Additionally, or alternatively, in some examples, the communications manager  1120 , the receiver  1110 , the transmitter  1115 , or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager  1120 , the receiver  1110 , the transmitter  1115 , or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure). 
     In some examples, the communications manager  1120  may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver  1110 , the transmitter  1115 , or both. For example, the communications manager  1120  may receive information from the receiver  1110 , send information to the transmitter  1115 , or be integrated in combination with the receiver  1110 , the transmitter  1115 , or both to receive information, transmit information, or perform various other operations as described herein. 
     The communications manager  1120  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1120  may be configured as or otherwise support a means for receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs. The communications manager  1120  may be configured as or otherwise support a means for receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs. The communications manager  1120  may be configured as or otherwise support a means for identifying a mission status of the aerial UE. The communications manager  1120  may be configured as or otherwise support a means for selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     Additionally, or alternatively, the communications manager  1120  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1120  may be configured as or otherwise support a means for receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs. The communications manager  1120  may be configured as or otherwise support a means for receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs. The communications manager  1120  may be configured as or otherwise support a means for connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Additionally, or alternatively, the communications manager  1120  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1120  may be configured as or otherwise support a means for communicating with a cell in a tracking area while in a first mission status. The communications manager  1120  may be configured as or otherwise support a means for determining to transition to a second mission status. The communications manager  1120  may be configured as or otherwise support a means for determining whether to transmit a TAU based on whether the tracking area supports the second mission status. 
     By including or configuring the communications manager  1120  in accordance with examples as described herein, the device  1105  (e.g., a processor controlling or otherwise coupled to the receiver  1110 , the transmitter  1115 , the communications manager  1120 , or a combination thereof) may support techniques for more efficient utilization of communication resources. In particular, the techniques described herein may allow for efficient cell selection, network selection, tracking area management, and paging for aerial operation such that aerial UEs may maximize the potential of resources dedicated to the aerial UEs. 
       FIG.  12    shows a block diagram  1200  of a device  1205  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1205  may be an example of aspects of a device  1105  or a UE  115  as described herein. The device  1205  may include a receiver  1210 , a transmitter  1215 , and a communications manager  1220 . The device  1205  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1210  may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). Information may be passed on to other components of the device  1205 . The receiver  1210  may utilize a single antenna or a set of multiple antennas. 
     The transmitter  1215  may provide a means for transmitting signals generated by other components of the device  1205 . For example, the transmitter  1215  may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). In some examples, the transmitter  1215  may be co-located with a receiver  1210  in a transceiver module. The transmitter  1215  may utilize a single antenna or a set of multiple antennas. 
     The device  1205 , or various components thereof, may be an example of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1220  may include a cell priority manager  1225 , a mission status manager  1230 , a cell selector  1235 , a network manager  1240 , a connection manager  1245 , a data manager  1250 , a TAU manager  1255 , or any combination thereof. The communications manager  1220  may be an example of aspects of a communications manager  1120  as described herein. In some examples, the communications manager  1220 , or various components thereof, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver  1210 , the transmitter  1215 , or both. For example, the communications manager  1220  may receive information from the receiver  1210 , send information to the transmitter  1215 , or be integrated in combination with the receiver  1210 , the transmitter  1215 , or both to receive information, transmit information, or perform various other operations as described herein. 
     The communications manager  1220  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The cell priority manager  1225  may be configured as or otherwise support a means for receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs. The cell priority manager  1225  may be configured as or otherwise support a means for receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs. The mission status manager  1230  may be configured as or otherwise support a means for identifying a mission status of the aerial UE. The cell selector  1235  may be configured as or otherwise support a means for selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     Additionally, or alternatively, the communications manager  1220  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The network manager  1240  may be configured as or otherwise support a means for receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs. The network manager  1240  may be configured as or otherwise support a means for receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs. The connection manager  1245  may be configured as or otherwise support a means for connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Additionally, or alternatively, the communications manager  1220  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The data manager  1250  may be configured as or otherwise support a means for communicating with a cell in a tracking area while in a first mission status. The mission status manager  1230  may be configured as or otherwise support a means for determining to transition to a second mission status. The TAU manager  1255  may be configured as or otherwise support a means for determining whether to transmit a TAU based on whether the tracking area supports the second mission status. 
       FIG.  13    shows a block diagram  1300  of a communications manager  1320  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The communications manager  1320  may be an example of aspects of a communications manager  1120 , a communications manager  1220 , or both, as described herein. The communications manager  1320 , or various components thereof, may be an example of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1320  may include a cell priority manager  1325 , a mission status manager  1330 , a cell selector  1335 , a data manager  1340 , a TAU manager  1345 , a network manager  1350 , a connection manager  1355 , or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The communications manager  1320  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The cell priority manager  1325  may be configured as or otherwise support a means for receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs. In some examples, the cell priority manager  1325  may be configured as or otherwise support a means for receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs. The mission status manager  1330  may be configured as or otherwise support a means for identifying a mission status of the aerial UE. The cell priority manager  1325  may pass the first and second priorities  1360  of the first and second cells to the cell selector  1335 , and the mission status manager  1330  may pass the mission status  1365  of the aerial UE to the cell selector  1335 . The cell selector  1335  may be configured as or otherwise support a means for selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     In some examples, to support receiving the first system information indicating the first priority of the first cell and the second system information indicating the second priority of the second cell, the cell priority manager  1325  may be configured as or otherwise support a means for receiving the first system information indicating a first set of multiple priorities of the first cell each corresponding to a different mission status of the aerial UE. In some examples, to support receiving the first system information indicating the first priority of the first cell and the second system information indicating the second priority of the second cell, the cell priority manager  1325  may be configured as or otherwise support a means for receiving the second system information indicating a second set of multiple priorities of the second cell each corresponding to a different mission status of the aerial UE. 
     In some examples, the cell priority manager  1325  may be configured as or otherwise support a means for determining to use the first priority of the first cell from the first set of multiple priorities of the first cell for cell selection based on the mission status of the aerial UE. In some examples, the cell priority manager  1325  may be configured as or otherwise support a means for determining to use the second priority of the second cell of the second set of multiple priorities of the second cell for cell selection based on the mission status of the aerial UE. 
     In some examples, the mission status of the aerial UE includes an aerial state, a ground state, a pre-flight state, or a post-flight state. In some examples, the first priority of the first cell corresponds to a first level of support for aerial UEs at the first cell, and the second priority of the second cell corresponds to a second level of support for aerial UEs at the second cell. In some examples, the first cell or the second cell is dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     Additionally, or alternatively, the communications manager  1320  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The data manager  1340  may be configured as or otherwise support a means for communicating with a cell in a tracking area while in a first mission status. In some examples, the mission status manager  1330  may be configured as or otherwise support a means for determining to transition to a second mission status. The data manager  1340  may pass an indication  1370  that the aerial UE is communicating with the cell in the tracking area to the TAU manager  1345 , and the mission status manager may pass the second mission status  1375  to the TAU manager  1345 . The TAU manager  1345  may be configured as or otherwise support a means for determining whether to transmit a TAU based on whether the tracking area supports the second mission status. 
     In some examples, the cell includes a first cell, and the connection manager  1355  may be configured as or otherwise support a means for connecting to a second cell in a second tracking area if the first tracking area fails to support the second mission status. In some examples, the cell includes a first cell, and the TAU manager  1345  may be configured as or otherwise support a means for transmitting the TAU based on connecting to the second cell in the second tracking area. In some examples, the first tracking area includes cells available to aerial UEs and non-aerial UEs and the second tracking area includes cells dedicated to aerial UEs. 
     In some examples, the TAU manager  1345  may be configured as or otherwise support a means for suppressing transmission of the TAU if the tracking area supports the second mission status. In some examples, the tracking area includes cells dedicated to aerial UEs. In some examples, the tracking area includes a first tracking area, and the TAU manager  1345  may be configured as or otherwise support a means for suppressing transmission of the TAU if the cell supports the second mission status. 
     Additionally, or alternatively, the communications manager  1320  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. The network manager  1350  may be configured as or otherwise support a means for receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs. In some examples, the network manager  1350  may be configured as or otherwise support a means for receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs. The network manager  1350  may pass indications  1380  of the first network and the second network to the connection manager  1355 . The connection manager  1355  may be configured as or otherwise support a means for connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     The network manager  1350  may also pass indications  1385  of the first network and the second network to the data manager  1340 . In some examples, the data manager  1340  may be configured as or otherwise support a means for determining that an amount of data for transmission to the first network via the first cell exceeds a threshold. In some examples, the data manager  1340  may be configured as or otherwise support a means for transmitting a first portion of the data to the first network via the first cell and a second portion of the data to the second network via the first cell or the second cell based on the determining. In some examples, the first portion of the data includes flight-operation data, and the second portion of the data includes payload data. 
     In some examples, the data manager  1340  may be configured as or otherwise support a means for determining that an amount of data for transmission to the first network via the first cell is below a threshold. In some examples, the data manager  1340  may be configured as or otherwise support a means for transmitting the data to the first network via the first cell based on the determining. In some examples, the data includes flight-operation data and payload data. 
     In some examples, the data manager  1340  may be configured as or otherwise support a means for transmitting flight-operation data to the first network via the first cell and payload data to the second network via the second cell. In some examples, connecting to the first network and to the second network is based on the aerial UE being in an aerial state. In some examples, the first network dedicated to aerial UEs supports emergency calls by aerial UEs, non-aerial UEs, or both. In some examples, the first system information includes a first network identity list indicating the first network, and the second system information includes a second network identity list indicating the second network. In some examples, the first system information includes a network identity list indicating the first network and the second network. 
     In some examples, the aerial UE includes a first subscriber identity module and a second subscriber identity module, and the data manager  1340  may be configured as or otherwise support a means for communicating with the first network via the first cell using the first subscriber identity module at the aerial UE. In some examples, the aerial UE includes a first subscriber identity module and a second subscriber identity module, and the data manager  1340  may be configured as or otherwise support a means for communicating with the second network via the first cell or the second cell using the second subscriber identity module at the aerial UE. In some examples, the aerial UE includes a single subscriber identity module, and the data manager  1340  may be configured as or otherwise support a means for communicating, over a split bearer, with the first network via the first cell and the second network via the second cell using the single subscriber identity module at the aerial UE. 
       FIG.  14    shows a diagram of a system  1400  including a device  1405  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1405  may be an example of or include the components of a device  1105 , a device  1205 , or a UE  115  as described herein. The device  1405  may communicate wirelessly with one or more base stations  105 , UEs  115 , or any combination thereof. The device  1405  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager  1420 , an input/output (I/O) controller  1410 , a transceiver  1415 , an antenna  1425 , a memory  1430 , code  1435 , and a processor  1440 . These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus  1445 ). 
     The I/O controller  1410  may manage input and output signals for the device  1405 . The I/O controller  1410  may also manage peripherals not integrated into the device  1405 . In some cases, the I/O controller  1410  may represent a physical connection or port to an external peripheral. In some cases, the I/O controller  1410  may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. Additionally, or alternatively, the I/O controller  1410  may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller  1410  may be implemented as part of a processor, such as the processor  1440 . In some cases, a user may interact with the device  1405  via the I/O controller  1410  or via hardware components controlled by the I/O controller  1410 . 
     In some cases, the device  1405  may include a single antenna  1425 . However, in some other cases, the device  1405  may have more than one antenna  1425 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver  1415  may communicate bi-directionally, via the one or more antennas  1425 , wired, or wireless links as described herein. For example, the transceiver  1415  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  1415  may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas  1425  for transmission, and to demodulate packets received from the one or more antennas  1425 . The transceiver  1415 , or the transceiver  1415  and one or more antennas  1425 , may be an example of a transmitter  1115 , a transmitter  1215 , a receiver  1110 , a receiver  1210 , or any combination thereof or component thereof, as described herein. 
     The memory  1430  may include random access memory (RAM) and read-only memory (ROM). The memory  1430  may store computer-readable, computer-executable code  1435  including instructions that, when executed by the processor  1440 , cause the device  1405  to perform various functions described herein. The code  1435  may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code  1435  may not be directly executable by the processor  1440  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory  1430  may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices. 
     The processor  1440  may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor  1440  may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor  1440 . The processor  1440  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  1430 ) to cause the device  1405  to perform various functions (e.g., functions or tasks supporting cell selection, network selection, tracking area management, and paging for aerial operation). For example, the device  1405  or a component of the device  1405  may include a processor  1440  and memory  1430  coupled to the processor  1440 , the processor  1440  and memory  1430  configured to perform various functions described herein. 
     The communications manager  1420  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1420  may be configured as or otherwise support a means for receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs. The communications manager  1420  may be configured as or otherwise support a means for receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs. The communications manager  1420  may be configured as or otherwise support a means for identifying a mission status of the aerial UE. The communications manager  1420  may be configured as or otherwise support a means for selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     Additionally, or alternatively, the communications manager  1420  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1420  may be configured as or otherwise support a means for receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs. The communications manager  1420  may be configured as or otherwise support a means for receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs. The communications manager  1420  may be configured as or otherwise support a means for connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Additionally, or alternatively, the communications manager  1420  may support wireless communication at an aerial UE in accordance with examples as disclosed herein. For example, the communications manager  1420  may be configured as or otherwise support a means for communicating with a cell in a tracking area while in a first mission status. The communications manager  1420  may be configured as or otherwise support a means for determining to transition to a second mission status. The communications manager  1420  may be configured as or otherwise support a means for determining whether to transmit a TAU based on whether the tracking area supports the second mission status. 
     By including or configuring the communications manager  1420  in accordance with examples as described herein, the device  1405  may support techniques for more efficient utilization of communication resources. In particular, the techniques described herein may allow for efficient cell selection, network selection, tracking area management, and paging for aerial operation such that aerial UEs may maximize the potential of resources dedicated to the aerial UEs. 
     In some examples, the communications manager  1420  may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver  1415 , the one or more antennas  1425 , or any combination thereof Although the communications manager  1420  is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager  1420  may be supported by or performed by the processor  1440 , the memory  1430 , the code  1435 , or any combination thereof. For example, the code  1435  may include instructions executable by the processor  1440  to cause the device  1405  to perform various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein, or the processor  1440  and the memory  1430  may be otherwise configured to perform or support such operations. 
       FIG.  15    shows a block diagram  1500  of a device  1505  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1505  may be an example of aspects of a base station  105  as described herein. The device  1505  may include a receiver  1510 , a transmitter  1515 , and a communications manager  1520 . The device  1505  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1510  may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). Information may be passed on to other components of the device  1505 . The receiver  1510  may utilize a single antenna or a set of multiple antennas. 
     The transmitter  1515  may provide a means for transmitting signals generated by other components of the device  1505 . For example, the transmitter  1515  may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). In some examples, the transmitter  1515  may be co-located with a receiver  1510  in a transceiver module. The transmitter  1515  may utilize a single antenna or a set of multiple antennas. 
     The communications manager  1520 , the receiver  1510 , the transmitter  1515 , or various combinations thereof or various components thereof may be examples of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1520 , the receiver  1510 , the transmitter  1515 , or various combinations or components thereof may support a method for performing one or more of the functions described herein. 
     In some examples, the communications manager  1520 , the receiver  1510 , the transmitter  1515 , or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory). 
     Additionally, or alternatively, in some examples, the communications manager  1520 , the receiver  1510 , the transmitter  1515 , or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager  1520 , the receiver  1510 , the transmitter  1515 , or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure). 
     In some examples, the communications manager  1520  may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver  1510 , the transmitter  1515 , or both. For example, the communications manager  1520  may receive information from the receiver  1510 , send information to the transmitter  1515 , or be integrated in combination with the receiver  1510 , the transmitter  1515 , or both to receive information, transmit information, or perform various other operations as described herein. 
     The communications manager  1520  may support wireless communication at a base station in accordance with examples as disclosed herein. For example, the communications manager  1520  may be configured as or otherwise support a means for transmitting system information indicating a priority of a cell for cell selection for aerial user equipments (UEs). The communications manager  1520  may be configured as or otherwise support a means for connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     Additionally, or alternatively, the communications manager  1520  may support wireless communication at a base station in accordance with examples as disclosed herein. For example, the communications manager  1520  may be configured as or otherwise support a means for identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs. The communications manager  1520  may be configured as or otherwise support a means for determining a mission status of the aerial UE. The communications manager  1520  may be configured as or otherwise support a means for paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     By including or configuring the communications manager  1520  in accordance with examples as described herein, the device  1505  (e.g., a processor controlling or otherwise coupled to the receiver  1510 , the transmitter  1515 , the communications manager  1520 , or a combination thereof) may support techniques for more efficient utilization of communication resources. In particular, the techniques described herein may allow for efficient cell selection, network selection, tracking area management, and paging for aerial operation such that aerial UEs may maximize the potential of resources dedicated to the aerial UEs. 
       FIG.  16    shows a block diagram  1600  of a device  1605  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1605  may be an example of aspects of a device  1505  or a base station  105  as described herein. The device  1605  may include a receiver  1610 , a transmitter  1615 , and a communications manager  1620 . The device  1605  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1610  may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). Information may be passed on to other components of the device  1605 . The receiver  1610  may utilize a single antenna or a set of multiple antennas. 
     The transmitter  1615  may provide a means for transmitting signals generated by other components of the device  1605 . For example, the transmitter  1615  may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cell selection, network selection, tracking area management, and paging for aerial operation). In some examples, the transmitter  1615  may be co-located with a receiver  1610  in a transceiver module. The transmitter  1615  may utilize a single antenna or a set of multiple antennas. 
     The device  1605 , or various components thereof, may be an example of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1620  may include a cell priority manager  1625 , a connection manager  1630 , a tracking area manager  1635 , a mission status manager  1640 , a pager  1645 , or any combination thereof. The communications manager  1620  may be an example of aspects of a communications manager  1520  as described herein. In some examples, the communications manager  1620 , or various components thereof, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver  1610 , the transmitter  1615 , or both. For example, the communications manager  1620  may receive information from the receiver  1610 , send information to the transmitter  1615 , or be integrated in combination with the receiver  1610 , the transmitter  1615 , or both to receive information, transmit information, or perform various other operations as described herein. 
     The communications manager  1620  may support wireless communication at a base station in accordance with examples as disclosed herein. The cell priority manager  1625  may be configured as or otherwise support a means for transmitting system information indicating a priority of a cell for cell selection for aerial UEs. The connection manager  1630  may be configured as or otherwise support a means for connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     Additionally, or alternatively, the communications manager  1620  may support wireless communication at a base station in accordance with examples as disclosed herein. The tracking area manager  1635  may be configured as or otherwise support a means for identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs. The mission status manager  1640  may be configured as or otherwise support a means for determining a mission status of the aerial UE. The pager  1645  may be configured as or otherwise support a means for paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
       FIG.  17    shows a block diagram  1700  of a communications manager  1720  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The communications manager  1720  may be an example of aspects of a communications manager  1520 , a communications manager  1620 , or both, as described herein. The communications manager  1720 , or various components thereof, may be an example of means for performing various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein. For example, the communications manager  1720  may include a cell priority manager  1725 , a connection manager  1730 , a tracking area manager  1735 , a mission status manager  1740 , a pager  1745 , or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The communications manager  1720  may support wireless communication at a base station in accordance with examples as disclosed herein. The cell priority manager  1725  may be configured as or otherwise support a means for transmitting system information indicating a priority of a cell for cell selection for aerial UEs. The connection manager  1730  may be configured as or otherwise support a means for connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     In some examples, to support transmitting the system information indicating the priority of the cell, the cell priority manager  1725  may be configured as or otherwise support a means for transmitting the system information indicating a set of multiple priorities of the cell each corresponding to a different mission status of the aerial UE. In some examples, the different mission status of the aerial UE includes an aerial state, a ground state, a pre-flight state, or a post-flight state. In some examples, the priority of the cell for cell selection for aerial UEs includes a first priority, and the cell priority manager  1725  may be configured as or otherwise support a means for transmitting, in the system information, an indication of a second priority of the cell for cell selection for non-aerial UEs. In some examples, the priority of the cell corresponds to a level of support for aerial UEs at the cell. In some examples, the cell is dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     Additionally, or alternatively, the communications manager  1720  may support wireless communication at a base station in accordance with examples as disclosed herein. The tracking area manager  1735  may be configured as or otherwise support a means for identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs. The mission status manager  1740  may be configured as or otherwise support a means for determining a mission status of the aerial UE. The tracking area manager  1735  may pass an indication  1750  that the aerial UE is connected to the cell within the tracking area to the pager  1745 , and the mission status manager  1740  may pass the mission status  1755  of the aerial UE to the pager  1745 . The pager  1745  may be configured as or otherwise support a means for paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     In some examples, the pager  1745  may be configured as or otherwise support a means for paging the aerial UE via the first set of cells dedicated to aerial UEs in the tracking area if the aerial UE is in an aerial state. In some examples, the pager  1745  may be configured as or otherwise support a means for paging the aerial UE via the first set of cells and the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. In some examples, the pager  1745  may be configured as or otherwise support a means for paging the aerial UE via the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. 
       FIG.  18    shows a diagram of a system  1800  including a device  1805  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The device  1805  may be an example of or include the components of a device  1505 , a device  1605 , or a base station  105  as described herein. The device  1805  may communicate wirelessly with one or more base stations  105 , UEs  115 , or any combination thereof. The device  1805  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager  1820 , a network communications manager  1810 , a transceiver  1815 , an antenna  1825 , a memory  1830 , code  1835 , a processor  1840 , and an inter-station communications manager  1845 . These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus  1850 ). 
     The network communications manager  1810  may manage communications with a core network  130  (e.g., via one or more wired backhaul links). For example, the network communications manager  1810  may manage the transfer of data communications for client devices, such as one or more UEs  115 . 
     In some cases, the device  1805  may include a single antenna  1825 . However, in some other cases the device  1805  may have more than one antenna  1825 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver  1815  may communicate bi-directionally, via the one or more antennas  1825 , wired, or wireless links as described herein. For example, the transceiver  1815  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  1815  may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas  1825  for transmission, and to demodulate packets received from the one or more antennas  1825 . The transceiver  1815 , or the transceiver  1815  and one or more antennas  1825 , may be an example of a transmitter  1515 , a transmitter  1615 , a receiver  1510 , a receiver  1610 , or any combination thereof or component thereof, as described herein. 
     The memory  1830  may include RAM and ROM. The memory  1830  may store computer-readable, computer-executable code  1835  including instructions that, when executed by the processor  1840 , cause the device  1805  to perform various functions described herein. The code  1835  may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code  1835  may not be directly executable by the processor  1840  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory  1830  may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. 
     The processor  1840  may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor  1840  may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor  1840 . The processor  1840  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  1830 ) to cause the device  1805  to perform various functions (e.g., functions or tasks supporting cell selection, network selection, tracking area management, and paging for aerial operation). For example, the device  1805  or a component of the device  1805  may include a processor  1840  and memory  1830  coupled to the processor  1840 , the processor  1840  and memory  1830  configured to perform various functions described herein. 
     The inter-station communications manager  1845  may manage communications with other base stations  105 , and may include a controller or scheduler for controlling communications with UEs  115  in cooperation with other base stations  105 . For example, the inter-station communications manager  1845  may coordinate scheduling for transmissions to UEs  115  for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager  1845  may provide an X2 interface within an LTE/LTE-A wireless communications network technology to provide communication between base stations  105 . 
     The communications manager  1820  may support wireless communication at a base station in accordance with examples as disclosed herein. For example, the communications manager  1820  may be configured as or otherwise support a means for transmitting system information indicating a priority of a cell for cell selection for aerial user equipments (UEs). The communications manager  1820  may be configured as or otherwise support a means for connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. 
     Additionally, or alternatively, the communications manager  1820  may support wireless communication at a base station in accordance with examples as disclosed herein. For example, the communications manager  1820  may be configured as or otherwise support a means for identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs. The communications manager  1820  may be configured as or otherwise support a means for determining a mission status of the aerial UE. The communications manager  1820  may be configured as or otherwise support a means for paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. 
     By including or configuring the communications manager  1820  in accordance with examples as described herein, the device  1805  may support techniques for more efficient utilization of communication resources. In particular, the techniques described herein may allow for efficient cell selection, network selection, tracking area management, and paging for aerial operation such that aerial UEs may maximize the potential of resources dedicated to the aerial UEs. 
     In some examples, the communications manager  1820  may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver  1815 , the one or more antennas  1825 , or any combination thereof Although the communications manager  1820  is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager  1820  may be supported by or performed by the processor  1840 , the memory  1830 , the code  1835 , or any combination thereof. For example, the code  1835  may include instructions executable by the processor  1840  to cause the device  1805  to perform various aspects of cell selection, network selection, tracking area management, and paging for aerial operation as described herein, or the processor  1840  and the memory  1830  may be otherwise configured to perform or support such operations. 
       FIG.  19    shows a flowchart illustrating a method  1900  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The operations of the method  1900  may be implemented by a UE or its components as described herein. For example, the operations of the method  1900  may be performed by a UE  115  as described with reference to  FIGS.  1  through  14   . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally. or alternatively, the UE may perform aspects of the described functions using special-purpose hardware. 
     At  1905 , the method may include receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs and receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs. The operations of  1905  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  1905  may be performed by a cell priority manager  1325  as described with reference to  FIG.  13   . 
     At  1910 , the method may include identifying a mission status of the aerial UE. The operations of  1910  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  1910  may be performed by a mission status manager  1330  as described with reference to  FIG.  13   . 
     At  1915 , the method may include selecting the first cell or the second cell for communications based on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. The operations of  1915  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  1915  may be performed by a cell selector  1335  as described with reference to  FIG.  13   . 
       FIG.  20    shows a flowchart illustrating a method  2000  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The operations of the method  2000  may be implemented by a base station or its components as described herein. For example, the operations of the method  2000  may be performed by a base station  105  as described with reference to  FIGS.  1  through  10  and  15  through  18   . In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally, or alternatively, the base station may perform aspects of the described functions using special-purpose hardware. 
     At  2005 , the method may include transmitting system information indicating a priority of a cell for cell selection for aerial UEs. The operations of  2005  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2005  may be performed by a cell priority manager  1725  as described with reference to  FIG.  17   . 
     At  2010 , the method may include connecting to an aerial UE for communications via the cell based on transmitting the system information indicating the priority of the cell. The operations of  2010  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2010  may be performed by a connection manager  1730  as described with reference to  FIG.  17   . 
       FIG.  21    shows a flowchart illustrating a method  2100  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The operations of the method  2100  may be implemented by a UE or its components as described herein. For example, the operations of the method  2100  may be performed by a UE  115  as described with reference to  FIGS.  1  through  14   . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware. 
     At  2105 , the method may include receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs and receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs. The operations of  2110  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2110  may be performed by a network manager  1350  as described with reference to  FIG.  13   . 
     At  2110  the method may include connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. The operations of  2115  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2115  may be performed by a connection manager  1355  as described with reference to  FIG.  13   . 
       FIG.  22    shows a flowchart illustrating a method  2200  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The operations of the method  2200  may be implemented by a UE or its components as described herein. For example, the operations of the method  2200  may be performed by a UE  115  as described with reference to  FIGS.  1  through  14   . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware. 
     At  2205 , the method may include communicating with a cell in a tracking area while in a first mission status. The operations of  2205  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2205  may be performed by a data manager  1340  as described with reference to  FIG.  13   . 
     At  2210 , the method may include determining to transition to a second mission status. The operations of  2210  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2210  may be performed by a mission status manager  1330  as described with reference to  FIG.  13   . 
     At  2215 , the method may include determining whether to transmit a TAU based on whether the tracking area supports the second mission status. The operations of  2215  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2215  may be performed by a TAU manager  1345  as described with reference to  FIG.  13   . 
       FIG.  23    shows a flowchart illustrating a method  2300  that supports cell selection, network selection, tracking area management, and paging for aerial operation in accordance with aspects of the present disclosure. The operations of the method  2300  may be implemented by a base station or its components as described herein. For example, the operations of the method  2300  may be performed by a base station  105  as described with reference to  FIGS.  1  through  10  and  15  through  18   . In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the described functions. Additionally, or alternatively, the base station may perform aspects of the described functions using special-purpose hardware. 
     At  2305 , the method may include identifying that an aerial UE is connected to a cell within a tracking area, the tracking area including a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs. The operations of  2305  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2305  may be performed by a tracking area manager  1735  as described with reference to  FIG.  17   . 
     At  2310 , the method may include determining a mission status of the aerial UE. The operations of  2310  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2310  may be performed by a mission status manager  1740  as described with reference to  FIG.  17   . 
     At  2315 , the method may include paging the aerial UE via one or more cells in the tracking area based on the mission status of the aerial UE. The operations of  2315  may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of  2315  may be performed by a pager  1745  as described with reference to  FIG.  17   . 
     The following provides an overview of aspects of the present disclosure: 
     Aspect 1: A method for wireless communication at an aerial UE, comprising: receiving first system information indicating a first priority of a first cell for cell selection for aerial UEs; receiving second system information indicating a second priority of a second cell for cell selection for aerial UEs; identifying a mission status of the aerial UE; and selecting the first cell or the second cell for communications based at least in part on the first priority of the first cell, the second priority of the second cell, and the mission status of the aerial UE. 
     Aspect 2: The method of aspect 1, wherein receiving the first system information indicating the first priority of the first cell and the second system information indicating the second priority of the second cell comprises: receiving the first system information indicating a first plurality of priorities of the first cell each corresponding to a different mission status of the aerial UE; and receiving the second system information indicating a second plurality of priorities of the second cell each corresponding to a different mission status of the aerial UE. 
     Aspect 3: The method of aspect 2, further comprising: determining to use the first priority of the first cell from the first plurality of priorities of the first cell for cell selection based at least in part on the mission status of the aerial UE; and determining to use the second priority of the second cell of the second plurality of priorities of the second cell for cell selection based at least in part on the mission status of the aerial UE. 
     Aspect 4: The method of any of aspects 1 through 3, wherein the mission status of the aerial UE comprises an aerial state, a ground state, a pre-flight state, or a post-flight state. 
     Aspect 5: The method of any of aspects 1 through 4, wherein the first priority of the first cell corresponds to a first level of support for aerial UEs at the first cell, and the second priority of the second cell corresponds to a second level of support for aerial UEs at the second cell. 
     Aspect 6: The method of any of aspects 1 through 5, wherein the first cell or the second cell is dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     Aspect 7: A method for wireless communication at a base station, comprising: transmitting system information indicating a priority of a cell for cell selection for aerial UEs; and connecting to an aerial UE for communications via the cell based at least in part on transmitting the system information indicating the priority of the cell. 
     Aspect 8: The method of aspect 7, wherein transmitting the system information indicating the priority of the cell comprises: transmitting the system information indicating a plurality of priorities of the cell each corresponding to a different mission status of the aerial UE. 
     Aspect 9: The method of aspect 8, wherein the different mission status of the aerial UE comprises an aerial state, a ground state, a pre-flight state, or a post-flight state. 
     Aspect 10: The method of any of aspects 7 through 9, wherein the priority of the cell for cell selection for aerial UEs comprises a first priority, the method further comprising: transmitting, in the system information, an indication of a second priority of the cell for cell selection for non-aerial UEs. 
     Aspect 11: The method of any of aspects 7 through 10, wherein the priority of the cell corresponds to a level of support for aerial UEs at the cell. 
     Aspect 12: The method of any of aspects 7 through 11, wherein the cell is dedicated to aerial UEs or available to aerial UEs and non-aerial UEs. 
     Aspect 13: A method for wireless communication at an aerial UE, comprising: receiving, in first system information from a first cell, an indication of a first network dedicated to aerial UEs; receiving, in the first system information from the first cell or in second system information from a second cell, an indication of a second network available to aerial UEs and non-aerial UEs; and connecting to the first network for communications via the first cell and to the second network for auxiliary communications via the first cell or the second cell. 
     Aspect 14: The method of aspect 13, further comprising: determining that an amount of data for transmission to the first network via the first cell exceeds a threshold; and transmitting a first portion of the data to the first network via the first cell and a second portion of the data to the second network via the first cell or the second cell based at least in part on the determining. 
     Aspect 15: The method of aspect 14, wherein the first portion of the data comprises flight-operation data, and the second portion of the data comprises payload data. 
     Aspect 16: The method of any of aspects 13 through 15, further comprising: determining that an amount of data for transmission to the first network via the first cell is below a threshold; and transmitting the data to the first network via the first cell based at least in part on the determining. 
     Aspect 17: The method of aspect 16, wherein the data comprises flight-operation data and payload data. 
     Aspect 18: The method of any of aspects 13 through 17, further comprising: transmitting flight-operation data to the first network via the first cell and payload data to the second network via the second cell. 
     Aspect 19: The method of any of aspects 13 through 18, wherein connecting to the first network and to the second network is based at least in part on the aerial UE being in an aerial state. 
     Aspect 20: The method of any of aspects 13 through 19, wherein the first network dedicated to aerial UEs supports emergency calls by aerial UEs, non-aerial UEs, or both. 
     Aspect 21: The method of any of aspects 13 through 20, wherein the first system information comprises a first network identity list indicating the first network, and the second system information comprises a second network identity list indicating the second network. 
     Aspect 22: The method of any of aspects 13 through 21, wherein the first system information comprises a network identity list indicating the first network and the second network. 
     Aspect 23: The method of any of aspects 13 through 22, wherein the aerial UE comprises a first subscriber identity module and a second subscriber identity module, the method further comprising: communicating with the first network via the first cell using the first subscriber identity module at the aerial UE; and communicating with the second network via the first cell or the second cell using the second subscriber identity module at the aerial UE. 
     Aspect 24: The method of any of aspects 13 through 23, wherein the aerial UE comprises a single subscriber identity module, the method further comprising: communicating, over a split bearer, with the first network via the first cell and the second network via the second cell using the single subscriber identity module at the aerial UE. 
     Aspect 25: A method for wireless communication at an aerial UE, comprising: communicating with a cell in a tracking area while in a first mission status; determining to transition to a second mission status; and determining whether to transmit a tracking area update based at least in part on whether the tracking area supports the second mission status. 
     Aspect 26: The method of aspect 25, wherein the cell comprises a first cell, and the tracking area comprises a first tracking area, the method further comprising: connecting to a second cell in a second tracking area if the first tracking area fails to support the second mission status; and transmitting a tracking area update based at least in part on connecting to the second cell in the second tracking area. 
     Aspect 27: The method of aspect 26, wherein the first tracking area comprises cells available to aerial UEs and non-aerial UEs and the second tracking area comprises cells dedicated to aerial UEs. 
     Aspect 28: The method of any of aspects 25 through 27, further comprising: suppressing transmission of a tracking area update if the tracking area supports the second mission status. 
     Aspect 29: The method of aspect 28, wherein the tracking area comprises cells dedicated to aerial UEs. 
     Aspect 30: The method of any of aspects 25 through 29, wherein the tracking area comprises a first tracking area, and the cell is in the first tracking area and a second tracking area, the method further comprising: suppressing transmission of a tracking area update if the cell supports the second mission status. 
     Aspect 31: A method for wireless communication at a base station, comprising: identifying that an aerial UE is connected to a cell within a tracking area, the tracking area comprising a first set of cells dedicated to aerial UEs and a second set of cells available to aerial UEs and non-aerial UEs; determining a mission status of the aerial UE; and paging the aerial UE via one or more cells in the tracking area based at least in part on the mission status of the aerial UE. 
     Aspect 32: The method of aspect 31, further comprising: paging the aerial UE via the first set of cells dedicated to aerial UEs in the tracking area if the aerial UE is in an aerial state. 
     Aspect 33: The method of aspect 32, further comprising: paging the aerial UE via the first set of cells and the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. 
     Aspect 34: The method of any of aspects 32 through 33, further comprising: paging the aerial UE via the second set of cells in the tracking area if the base station failed to receive a response to the paging via the first set of cells dedicated to aerial UEs. 
     Aspect 35: An apparatus for wireless communication at an aerial UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 6. 
     Aspect 36: An apparatus for wireless communication at an aerial UE, comprising at least one means for performing a method of any of aspects 1 through 6. 
     Aspect 37: A non-transitory computer-readable medium storing code for wireless communication at an aerial UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 6. 
     Aspect 38: An apparatus for wireless communication at a base station, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 7 through 12. 
     Aspect 39: An apparatus for wireless communication at a base station, comprising at least one means for performing a method of any of aspects 7 through 12. 
     Aspect 40: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform a method of any of aspects 7 through 12. 
     Aspect 41: An apparatus for wireless communication at an aerial UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 13 through 24. 
     Aspect 42: An apparatus for wireless communication at an aerial UE, comprising at least one means for performing a method of any of aspects 13 through 24. 
     Aspect 43: A non-transitory computer-readable medium storing code for wireless communication at an aerial UE, the code comprising instructions executable by a processor to perform a method of any of aspects 13 through 24. 
     Aspect 44: An apparatus for wireless communication at an aerial UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 25 through 30. 
     Aspect 45: An apparatus for wireless communication at an aerial UE, comprising at least one means for performing a method of any of aspects 25 through 30. 
     Aspect 46: A non-transitory computer-readable medium storing code for wireless communication at an aerial UE, the code comprising instructions executable by a processor to perform a method of any of aspects 25 through 30. 
     Aspect 47: An apparatus for wireless communication at a base station, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 31 through 34. 
     Aspect 48: An apparatus for wireless communication at a base station, comprising at least one means for performing a method of any of aspects 31 through 34. 
     Aspect 49: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform a method of any of aspects 31 through 34. 
     It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined. 
     Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein. 
     Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof. 
     The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration). 
     The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. 
     Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media. 
     As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of”) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.” 
     In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label. 
     The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples. 
     The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.