Patent Publication Number: US-2021195576-A1

Title: Concurrent sidelink and uplink transmission

Description:
CROSS REFERENCE 
     The present application for patent claims the benefit of U.S. Provisional Patent Application No. 62/951,928 by Balasubramanian et al., entitled “CONCURRENT SIDELINK AND UPLINK TRANSMISSION,” filed Dec. 20, 2019, assigned to the assignee hereof, and expressly incorporated by reference in its entirety herein. 
    
    
     FIELD OF TECHNOLOGY 
     The following relates generally to wireless communications and more specifically to concurrent sidelink and uplink transmission. 
     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 one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE). 
     A UE may communicate with a base station over an uplink communication channel in a first resource and may also communicate with neighboring UEs over a sidelink communications channel in a second resource that differs from the first resource. Conventional uplink and sidelink communication techniques may be deficient. 
     SUMMARY 
     The described techniques relate to improved methods, systems, devices, and apparatuses that support concurrent sidelink and uplink transmission. Generally, the described techniques provide for concurrent sidelink and uplink transmissions by a user equipment in a wireless communication system, such as a vehicle to vehicle (V2V) or vehicle to everything (V2X) communications system. A UE may transmit concurrent messages over sidelink communications channels to other UEs and also transmit uplink communications channels to base stations. The UE may transmit, to a base station, a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel. The UE may receive, from the base station and based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. The UE may then transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. Other UEs and one or more base stations may receive the concurrent sidelink and uplink transmission and may decode different layers of the transmission based on the receive channel quality at the device. 
     A method of wireless communications by a UE is described. The method may include transmitting a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receiving, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmitting the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     An apparatus for wireless communications by a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     Another apparatus for wireless communications by a UE is described. The apparatus may include means for transmitting a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receiving, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmitting the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     A non-transitory computer-readable medium storing code for wireless communications by a UE is described. The code may include instructions executable by a processor to transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the report may include operations, features, means, or instructions for transmitting the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for transmitting the concurrent sidelink and uplink transmission based on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for transmitting the concurrent sidelink and uplink transmission based on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration may be based on the first path quality metric and the second path quality metric. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each of the first path quality metric and the second path quality metric may be a path loss metric. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a sidelink resource request, where the transmission configuration may be received based on the sidelink resource request. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting an uplink resource request, where the transmission configuration may be received based on the uplink resource request. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the transmission configuration may include operations, features, means, or instructions for receiving the transmission configuration that includes a resource assignment that indicates the resource. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the transmission configuration may include operations, features, means, or instructions for receiving the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the transmission configuration may include operations, features, means, or instructions for receiving the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first transmission parameter may be a first modulation and coding scheme (MCS) for the sidelink transmission, the second transmission parameter may be a second MCS for the uplink transmission, or both. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the transmission configuration may include operations, features, means, or instructions for receiving the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the transmission configuration may include operations, features, means, or instructions for receiving the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for transmitting the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based on the power control parameter. 
     A method of wireless communications by a base station is described. The method may include receiving a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmitting, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receiving the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     An apparatus for wireless communications by a base station is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     Another apparatus for wireless communications by a base station is described. The apparatus may include means for receiving a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmitting, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receiving the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     A non-transitory computer-readable medium storing code for wireless communications by a base station is described. The code may include instructions executable by a processor to receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the report may include operations, features, means, or instructions for receiving the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for receiving the concurrent sidelink and uplink transmission based on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for receiving the concurrent sidelink and uplink transmission based on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for decoding the concurrent sidelink and uplink transmission based on the transmission configuration and cancelling a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration may be based on the first path quality metric and the second path quality metric. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each of the first path quality metric and the second path quality metric may be a path loss metric. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a sidelink resource request, where the transmission configuration may be received based on the sidelink resource request. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an uplink resource request, where the transmission configuration may be received based on the uplink resource request. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the transmission configuration may include operations, features, means, or instructions for transmitting the transmission configuration that includes a resource assignment that indicates the resource. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the transmission configuration may include operations, features, means, or instructions for transmitting the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the transmission configuration may include operations, features, means, or instructions for transmitting the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first transmission parameter may be a first MCS for the sidelink transmission, the second transmission parameter may be a second MCS for the uplink transmission, or both. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the transmission configuration may include operations, features, means, or instructions for transmitting the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the transmission configuration may include operations, features, means, or instructions for transmitting the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the concurrent sidelink and uplink transmission may include operations, features, means, or instructions for receiving the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based on the power control parameter. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates an example of a wireless communications system in accordance with aspects of the present disclosure. 
         FIG. 2  illustrates an example of a wireless communications system in accordance with aspects of the present disclosure. 
         FIG. 3  illustrates an example of a process flow in accordance with aspects of the present disclosure. 
         FIGS. 4 and 5  show block diagrams of devices in accordance with aspects of the present disclosure. 
         FIG. 6  shows a block diagram of a communications manager in accordance with aspects of the present disclosure. 
         FIG. 7  shows a diagram of a system including a device in accordance with aspects of the present disclosure. 
         FIGS. 8 and 9  show block diagrams of devices in accordance with aspects of the present disclosure. 
         FIG. 10  shows a block diagram of a communications manager in accordance with aspects of the present disclosure. 
         FIG. 11  shows a diagram of a system in accordance with aspects of the present disclosure. 
         FIGS. 12 through 15  show flowcharts illustrating methods in accordance with aspects of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     A user equipment (UE) may communicate with a base station over uplink channels and may also communicate with neighboring UEs over a sidelink communications channel. A UE communicating over a sidelink channel to other neighboring UEs may be an example of a vehicle in a vehicle to vehicle (V2V) or a vehicle to everything (V2X) wireless communication system. In some cases, separate resources may be assigned for sidelink transmissions and for uplink transmissions, such as in conventional Mode-1 V2X systems. The UE may perform channel monitoring, which may include periodic channel measurements such as a measurement of the signal-to-noise ratio (SNR) of one or more channels. The sidelink communications channel may sometimes have a lower SNR than the uplink communications channel. This SNR mismatch may be utilized to obtain higher throughput communications by the transmitting UE. 
     In an example, a UE may transmit sidelink communications in a base layer, and the UE may transmit uplink communications in an enhancement layer. For example, a UE may encode data to be transmitted in a sidelink channel (e.g., a physical sidelink shared channel (PSSCH)) as the base layer, and encoding data to be transmitted in a physical uplink shared channel (PUSCH) as enhancement layer. The base layer and the enhancement layer may be superimposed in a superposition transmission such that the UE may transmit the base layer and the enhancement layer simultaneously. The base layer in a superposition transmission may be encoded based on the weaker link (e.g., based on the channel with the lower SNR), and the enhancement layer may be encoded based on the stronger link (e.g., based on the channel with the higher SNR). Thus, the UE may transmit a concurrent transmission within a same resource that includes the base layer and the enhancement layer, which may lead to a higher spectral efficiency. 
     A UE simultaneously transmitting the concurrent sidelink (SL) and uplink (UL) communications (e.g., concurrent SL and UL or Uu transmission) may indicate an intent to perform concurrent transmission to a base station, or may communicate an indication of a capability to perform concurrent transmission to the base station. In some cases, the UE may transmit a report indicating the capability to perform concurrent transmission to the base station. Capability reporting may be accomplished using a UE capability message, transmission of an information element indicating the capability, or other types of messages. In some cases, the reporting may be an implicit indication that the UE is capable of performing concurrent transmission. For example, the UE may indicate a transmission mode that includes the capability of performing concurrent transmission. The base station may grant sidelink and uplink resources based on the intent or the capability of the UE. The UE may then encode the data to be transmitted concurrently, and may transmit the concurrent base layer and enhancement layers over the sidelink and uplink channels. 
     Due to the lower SNR in the sidelink channel, the receiving UE may be able to decode the base layer, which may include the sidelink transmission message, and the enhancement layer may likely not be received by the receiving UE due to the lower SNR of the sidelink channel. Due to the higher SNR in the uplink channel, the base station may be able to receive and decode both the base layer and the enhancement layer of the transmission, and the base station may be able to decode the relevant uplink information of the concurrent transmission by cancelling the base layer from the received transmission to obtain the enhancement layer. As such, the same resource allocation may be used to transmit information over the sidelink channel and the uplink channel. 
     Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are with described in the context of a process flow diagram. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to concurrent sidelink and uplink transmission. 
       FIG. 1  illustrates an example of a wireless communications system  100  that supports concurrent sidelink and uplink transmission 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, 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 , or downlink transmissions from a base station  105  to a UE  115 . 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). 
     A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system  100 . For example, the carrier bandwidth may be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communications system  100  (e.g., the base stations  105 , the UEs  115 , or both) may have hardware configurations that support communications over a particular carrier bandwidth or may be configurable to support communications over one of a set of carrier bandwidths. In some examples, the wireless communications system  100  may include base stations  105  or UEs  115  that support simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE  115  may be configured for operating over portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth. 
     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 . 
     One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE  115  may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE  115  may be restricted to one or more active BWPs. 
     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 support synchronous or asynchronous operation. For synchronous operation, the base stations  105  may have similar frame timings, and transmissions from different base stations  105  may be approximately aligned in time. For asynchronous operation, the base stations  105  may have different frame timings, and transmissions from different base stations  105  may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations. 
     Some UEs  115 , such as MTC or IoT devices, may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a base station  105  without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans interacting with the application program. Some UEs  115  may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging. 
     Some UEs  115  may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously). In some examples, half-duplex communications may be performed at a reduced peak rate. Other power conservation techniques for the UEs  115  include entering a power saving deep sleep mode when not engaging in active communications, operating over a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs  115  may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs)) within a carrier, within a guard-band of a carrier, or outside of a carrier. 
     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 V2X communications, 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 the network operators IP services  150 . The operators 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 also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band. In some examples, the wireless communications system  100  may support millimeter wave (mmW) communications between the UEs  115  and the base stations  105 , and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate use of antenna arrays within a device. The propagation of EHF transmissions, however, may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body. 
     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). 
     A base station  105  or a UE  115  may use beam sweeping techniques as part of beam forming operations. For example, a base station  105  may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE  115 . Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a base station  105  multiple times in different directions. For example, the base station  105  may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by a transmitting device, such as a base station  105 , or by a receiving device, such as a UE  115 ) a beam direction for later transmission or reception by the base station  105 . 
     Some signals, such as data signals associated with a particular receiving device, may be transmitted by a base station  105  in a single beam direction (e.g., a direction associated with the receiving device, such as a UE  115 ). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted in one or more beam directions. For example, a UE  115  may receive one or more of the signals transmitted by the base station  105  in different directions and may report to the base station  105  an indication of the signal that the UE  115  received with a highest signal quality or an otherwise acceptable signal quality. 
     In some examples, transmissions by a device (e.g., by a base station  105  or a UE  115 ) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station  105  to a UE  115 ). The UE  115  may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more sub-bands. The base station  105  may transmit a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or unprecoded. The UE  115  may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted in one or more directions by a base station  105 , a UE  115  may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE  115 ) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device). 
     A receiving device (e.g., a UE  115 ) may try multiple receive configurations (e.g., directional listening) when receiving various signals from the base station  105 , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned in a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest SNR, or otherwise acceptable signal quality based on listening according to multiple beam directions). 
     The wireless communications system  100  may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE  115  and a base station  105  or a core network  130  supporting radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels. 
     The UEs  115  and the base stations  105  may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly over a communication link  125 . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval. 
     In a wireless communication system, such as a V2V or V2X communications system, a UE  115  may transmit concurrent messages over sidelink communications channels to other UEs  115  and uplink communications channels to base stations  105 . The UE  115  may transmit, to a base station  105 , a report or a transmission indicating a capability of the UE  115  to concurrently transmit over a sidelink channel and an uplink channel. The UE  115  may receive, from the base station  105  and based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource chares by the sidelink channel and the uplink channel. The UE  115  may then transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. Other UEs  115  and one or more base stations  105  may receive the concurrent sidelink and uplink transmission and may decode different layers of the transmission based on the receive channel quality at the device. 
       FIG. 2  illustrates an example of a wireless communications system  200  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. In some examples, wireless communications system  200  may implement aspects of wireless communication system  100 . UE  115 - a  and UE  115 - b  may be examples of UEs  115  as described with reference to  FIG. 1 . Base station  105 - a  may be an example of a base station  105  as described with reference to  FIG. 1 . UE  115 - a  may communicate with base station  105 - b  by receiving and transmitting signaling over communication channel  205 . UE  115 - a  may communicate with UE  115 - b  by receiving and transmitting signaling over sidelink channel  210 . UEs  115  may be example of vehicles in a V2V or V2X wireless communications system. 
     UE  115 - a  may periodically measure channel quality parameters of communication channel  205  and sidelink channel  210 . UE  115 - a  may measure the SNR of both channel  205  and  210 , and may determine that sidelink channel  210  has a lower SNR, or another channel quality measurement. This may lead to a case of SNR mismatch in cases where channel  205  has a relatively higher SNR than the sidelink channel  210 . UE  115 - a  may utilize the SNR mismatch between the uplink channel  205  and the sidelink channel  210  to transmit a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel  210  and the uplink channel  205  to obtain higher spectral efficiency. 
     UE  115 - a  may perform a path loss measurement (e.g., an average path loss measurement) experienced in the sidelink channel  210  over a particular time window T W . UE  115 - a  may perform this measurement by determining the reference signal receive power (RSRP) of sidelink channel  210 , and also by receiving sidelink control information (SCI) and decoding SCI over the sidelink channel  210  from nearby UEs, such as from UE  115 - b.    
     UE  115 - b  may indicate an intent to perform concurrent sidelink and uplink transmissions to transmitting an indication to base station  105 - a . The indication of the intent to perform the concurrent transmission may implicitly indicate, to the base station a capability to perform the concurrent transmissions. In some cases, UE  115 - a  may also transmit a capability report  215  to base station  105 - a  indicating a capability of UE  115 - a  to perform concurrent sidelink and uplink transmissions. In some cases, the indication of the intent may be included in capability report  215 . 
     UE  115 - a  may also transmit, to base station  105 - a , a request of sidelink transmission resources. The request of sidelink transmission resources may be based on a sidelink packet priority, a buffer status report (BSR), or both. UE  115 - a  may also report the sidelink quality (e.g., SNR or other measurements) to base station  105 - a , in addition to other path loss reporting (e.g., Uu path loss reporting) to base station  105 - a.    
     UE  115 - a  may also request uplink resources by transmitting a request to base station  105 - a . UE  115 - a  may also be configured with uplink resources (e.g., based on prior RRC or downlink control information (DCI) messaging). Base station  105 - a  may transmit a transmission configuration  220  which may indicate the common resources over which base layer  230  encoding of sidelink channel  210  transmissions and enhancement layer  235  encoding of uplink communications on channel  205  may be performed. Base layer  230  may include sidelink information or data and enhancement layer  235  may include uplink information or data. Base layer  230  and enhancement layer  235  may be allocated the same resources. Base layer  230  may include lower quality or lower fidelity data than enhancement layer  235 , and enhancement layer may include data encoded with scaled coding, such that enhancement layer  235  and base layer  230  may be decoded when transmitted in a high quality channel, and base layer  230  may be decoded and the enhancement layer may not be received due to being transmitted in a lower quality channel (e.g., based on the SNR of the channel). 
     Transmission configuration  220  may also include a set of parameters based on sidelink path quality metrics, uplink path quality metrics, priority levels of sidelink communications and uplink communications, and the requested resources, report by UE  115 - a . The parameters may include a resource grant indicating a resource shared by the uplink channel and the sidelink channel that may completely or at least partially overlap in time, frequency, or both. The parameters may also include a first modulation and coding scheme (MCS) for the sidelink transmission and a second MCS for the uplink transmission that may be the same as or different form the first MCS. The parameters may indicate a power split between the sidelink transmission and the uplink transmission. For example, the power split may indicate power levels used for each of the sidelink transmission in base layer  230  and the uplink transmission in enhancement layer  235 . The power split β may be defined such that the power split between the sidelink channel and the uplink channel is 0≤β≤1. The parameters may indicate open loop control parameters (e.g., Po, alpha) for concurrent sidelink and uplink transmissions. For example, the open loop power control parameters may include a P o  value and an alpha value. 
     UE  115 - a  may determine a total power budget P based on the open loop power control parameters and the closed loop power control signaling received from base station  105 - a  (e.g., in physical downlink control channel (PDCCH) signaling). UE  115 - a  may then perform the concurrent transmission  225  using power βP for encoding base layer  230  and power (1−β)P for encoding the uplink enhancement layer  235  of concurrent transmission  225 , using the MCS parameters indicated for sidelink and uplink. UE  115 - a  may transmit concurrent transmission  225  of base layer  230  and enhancement layer  235  in the same resources, and concurrent transmission  225  may be received by base station  105 - a  in channel  205  and may also be received by UE  115 - b  in sidelink channel  210 . 
     UE  115 - b  may perform decoding of SCI contents to decode base layer  230  sidelink information of concurrent transmission  225 . UE  115 - b  may be agnostic to the present of enhancement layer  235 , may treat enhancement layer  235  of concurrent transmission  225  as noise, or both. Base station  105 - a  may decode and obtain enhancement layer  235  of concurrent transmission  225  by also ignoring or canceling sidelink base layer  230 . Base station  105 - a  may be aware of the shared resource allocated for the sidelink channel and the uplink channel and the transmission parameters of sidelink communications in base layer  230 , and may utilize those parameters to cancel the base layer  230  from a received concurrent sidelink and uplink transmission to decode enhancement layer  235 . 
       FIG. 3  illustrates an example of a process flow  300  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. In some examples, process flow  300  may implement aspects of wireless communication system  100 . UEs  115 - c  and  115 - d  may be examples of a UE  115  as described with reference to  FIGS. 1 and 2 . Base station  105 - b  may be an example of a base station  105  as described with reference to  FIGS. 1 and 2 . UEs  115  may be examples of vehicles, such as in a V2V or V2X wireless communications system. 
     UE  115 - c  and UE  115 - d  may communicate via a sidelink communications channel. For example, at  305  UE  115 - d  may transmit sidelink messages (e.g., SCI) to UE  115 - c . Sidelink reception by UE  115 - c  may be from UEs in the vicinity, such as UE  115 - d . UE  115 - c  may also communicate with base station  105 - b  by transmitting uplink messages and receiving downlink messages from base station  105 - b.    
     At  310 , UE  115 - c  may determine pathloss metrics for the sidelink channel and the uplink channel. UE  115 - c  may transmit, to base station  105 - b , a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration may be based on the first path quality metric and the second path quality metric. Each of the first path quality metric and the second path quality metric may be a path loss metric, or another channel measurement. 
     At  315 , UE  115 - c  may transmit a report indicating a capability of UE  115 - c  to concurrently transmit over a sidelink channel and an uplink channel. UE  115 - c  may transmit the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     At  320 , UE  115 - c  may transmit a resource request. UE  115 - c  may transmit a sidelink resource request, where the transmission configuration may be received based on the sidelink resource request. UE  115 - c  may also transmit an uplink resource request, where the transmission configuration may be received based on the uplink resource request. The resources requests may be transmitted jointly or as separate messages. 
     At  325 , UE  115 - c  may receive, based on the capability report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. UE  115 - c  may receive the transmission configuration that includes a resource assignment that indicates the resource. UE  115 - c  may also receive the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. The transmission configuration may also indicate a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. The first transmission parameter may be a first MCS for the sidelink transmission, or the second transmission parameter may be a second MCS for the uplink transmission, or both. 
     The transmission configuration may also indicate a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. The transmission configuration may indicate a power control parameter for the concurrent sidelink and uplink transmission. 
     At  330 , UE  115 - c  may transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. UE  115 - c  may transmit the concurrent sidelink and uplink transmission based on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. UE  115 - c  may transmit the concurrent sidelink and uplink transmission based on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. UE  115 - c  may transmit the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based on the power control parameter. 
     At  335 , base station  105 - b  may decode the concurrent sidelink and uplink transmission based on the transmission configuration and cancelling a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. Base station  105 - b  may therefore decode the uplink transmissions of the enhancement layer and may ignore the sidelink transmissions encoded in the base layer of the concurrent transmission. 
     At  340 , UE  115 - d  may decode the concurrent sidelink and uplink transmission based on the transmission configuration. UE  115 - d  may decode the base layer, and may be unable to decode the enhancement layer due to the lower SNR of the sidelink channel. As such, UE  115 - d  may decode the sidelink transmissions intended for UE  115 - d  and may not decode uplink transmissions intended for base station  105 - b.    
       FIG. 4  shows a block diagram  400  of a device  405  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  405  may be an example of aspects of a UE  115  as described herein. The device  405  may include a receiver  410 , a communications manager  415 , and a transmitter  420 . The device  405  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  410  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to concurrent sidelink and uplink transmission, etc.). Information may be passed on to other components of the device  405 . The receiver  410  may be an example of aspects of the transceiver  720  described with reference to  FIG. 7 . The receiver  410  may utilize a single antenna or a set of antennas. 
     The communications manager  415  may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The communications manager  415  may be an example of aspects of the communications manager  710  described herein. 
     The communications manager  415 , or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager  415 , or its sub-components may be executed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. 
     The communications manager  415 , or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager  415 , or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager  415 , or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure. 
     The transmitter  420  may transmit signals generated by other components of the device  405 . In some examples, the transmitter  420  may be collocated with a receiver  410  in a transceiver module. For example, the transmitter  420  may be an example of aspects of the transceiver  720  described with reference to  FIG. 7 . The transmitter  420  may utilize a single antenna or a set of antennas. 
     In some examples, the communications manager  415  described herein may be implemented as a chipset of a wireless modem, and the receiver  410  and the transmitter  420  may be implemented as sets of analog components (e.g., amplifiers, filters, phase shifters, antennas, etc.) The wireless modem may obtain and decode signals from the receiver  410  over a receive interface, and may output signals for transmission to the transmitter  420  over a transmit interface. 
     The actions performed by communications manager  415  as described herein may be implemented to realize one or more potential advantages. One implementation may allow a UE  115  to save power and increase battery life by increasing the efficient use of resources and improving throughput. Additionally, the UE  115  may further reduce retransmissions by efficiently allocating sidelink and uplink transmissions based on measurements of channel quality. 
       FIG. 5  shows a block diagram  500  of a device  505  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  505  may be an example of aspects of a device  405 , or a UE  115  as described herein. The device  505  may include a receiver  510 , a communications manager  515 , and a transmitter  535 . The device  505  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  510  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to concurrent sidelink and uplink transmission, etc.). Information may be passed on to other components of the device  505 . The receiver  510  may be an example of aspects of the transceiver  720  described with reference to  FIG. 7 . The receiver  510  may utilize a single antenna or a set of antennas. 
     The communications manager  515  may be an example of aspects of the communications manager  415  as described herein. The communications manager  515  may include a report component  520 , a configuration component  525 , and a concurrent transmission component  530 . The communications manager  515  may be an example of aspects of the communications manager  710  described herein. 
     The report component  520  may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel. The configuration component  525  may receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. 
     The concurrent transmission component  530  may transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     The transmitter  535  may transmit signals generated by other components of the device  505 . In some examples, the transmitter  535  may be collocated with a receiver  510  in a transceiver module. For example, the transmitter  535  may be an example of aspects of the transceiver  720  described with reference to  FIG. 7 . The transmitter  535  may utilize a single antenna or a set of antennas. 
     A processor of a UE  115  (e.g., controlling the receiver  520 , the transmitter  535 , or the transceiver  720  as described with reference to  FIG. 7 ) may efficiently measure channel quality of sidelink and uplink communication links. The processor of the UE  115  may further transmit, by operating transmitter  535 , an indication of channel quality and concurrent transmission capability. The processor of the UE  115  may operate receiver  520  to receive, from a base station  105 , a concurrent transmission resource configuration. The processor of the UE  115  may further efficiently encode and operate components of the UE  115  to improve throughput and efficient resource allocation, which may save power and increase battery life of the UE  115 . 
       FIG. 6  shows a block diagram  600  of a communications manager  605  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The communications manager  605  may be an example of aspects of a communications manager  415 , a communications manager  515 , or a communications manager  710  described herein. The communications manager  605  may include a report component  610 , a configuration component  615 , a concurrent transmission component  620 , a quality component  625 , a resource request component  630 , and a power component  635 . Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The report component  610  may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel. 
     In some examples, the report component  610  may transmit the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     The configuration component  615  may receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. 
     In some examples, the configuration component  615  may receive the transmission configuration that includes a resource assignment that indicates the resource. 
     In some examples, the configuration component  615  may receive the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     In some examples, the configuration component  615  may receive the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     In some cases, the first transmission parameter is a first MCS for the sidelink transmission, the second transmission parameter is a second MCS for the uplink transmission, or both. 
     The concurrent transmission component  620  may transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     In some examples, the concurrent transmission component  620  may transmit the concurrent sidelink and uplink transmission based on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     In some examples, the concurrent transmission component  620  may transmit the concurrent sidelink and uplink transmission based on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     In some examples, the concurrent transmission component  620  may transmit the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based on the power control parameter. 
     The quality component  625  may transmit a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration is based on the first path quality metric and the second path quality metric. 
     In some cases, each of the first path quality metric and the second path quality metric is a path loss metric. 
     The resource request component  630  may transmit a sidelink resource request, where the transmission configuration is received based on the sidelink resource request. 
     In some examples, the resource request component  630  may transmit an uplink resource request, where the transmission configuration is received based on the uplink resource request. 
     The power component  635  may receive the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     In some examples, the power component  635  may receive the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission. 
       FIG. 7  shows a diagram of a system  700  including a device  705  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  705  may be an example of or include the components of device  405 , device  505 , or a UE  115  as described herein. The device  705  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager  710 , an I/O controller  715 , a transceiver  720 , an antenna  725 , memory  730 , and a processor  740 . These components may be in electronic communication via one or more buses (e.g., bus  745 ). 
     The communications manager  710  may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel, receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     The I/O controller  715  may manage input and output signals for the device  705 . The I/O controller  715  may also manage peripherals not integrated into the device  705 . In some cases, the I/O controller  715  may represent a physical connection or port to an external peripheral. In some cases, the I/O controller  715  may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. In other cases, the I/O controller  715  may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller  715  may be implemented as part of a processor. In some cases, a user may interact with the device  705  via the I/O controller  715  or via hardware components controlled by the I/O controller  715 . 
     The transceiver  720  may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver  720  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  720  may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. 
     In some cases, the wireless device may include a single antenna  725 . However, in some cases the device may have more than one antenna  725 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. 
     The memory  730  may include random-access memory (RAM) and read-only memory (ROM). The memory  730  may store computer-readable, computer-executable code  735  including instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory  730  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  740  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  740  may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into the processor  740 . The processor  740  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  730 ) to cause the device  705  to perform various functions (e.g., functions or tasks supporting concurrent sidelink and uplink transmission). 
     The code  735  may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code  735  may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code  735  may not be directly executable by the processor  740  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. 
       FIG. 8  shows a block diagram  800  of a device  805  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  805  may be an example of aspects of a base station  105  as described herein. The device  805  may include a receiver  810 , a communications manager  815 , and a transmitter  820 . The device  805  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  810  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to concurrent sidelink and uplink transmission, etc.). Information may be passed on to other components of the device  805 . The receiver  810  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The receiver  810  may utilize a single antenna or a set of antennas. 
     The communications manager  815  may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The communications manager  815  may be an example of aspects of the communications manager  1110  described herein. 
     The communications manager  815 , or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager  815 , or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. 
     The communications manager  815 , or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager  815 , or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager  815 , or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure. 
     The transmitter  820  may transmit signals generated by other components of the device  805 . In some examples, the transmitter  820  may be collocated with a receiver  810  in a transceiver module. For example, the transmitter  820  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The transmitter  820  may utilize a single antenna or a set of antennas. 
       FIG. 9  shows a block diagram  900  of a device  905  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  905  may be an example of aspects of a device  805 , or a base station  105  as described herein. The device  905  may include a receiver  910 , a communications manager  915 , and a transmitter  935 . The device  905  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  910  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to concurrent sidelink and uplink transmission, etc.). Information may be passed on to other components of the device  905 . The receiver  910  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The receiver  910  may utilize a single antenna or a set of antennas. 
     The communications manager  915  may be an example of aspects of the communications manager  815  as described herein. The communications manager  915  may include a report reception component  920 , a configuration scheduling component  925 , and a concurrent reception component  930 . The communications manager  915  may be an example of aspects of the communications manager  1110  described herein. 
     The report reception component  920  may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel. 
     The configuration scheduling component  925  may transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. 
     The concurrent reception component  930  may receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     The transmitter  935  may transmit signals generated by other components of the device  905 . In some examples, the transmitter  935  may be collocated with a receiver  910  in a transceiver module. For example, the transmitter  935  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The transmitter  935  may utilize a single antenna or a set of antennas. 
       FIG. 10  shows a block diagram  1000  of a communications manager  1005  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The communications manager  1005  may be an example of aspects of a communications manager  815 , a communications manager  915 , or a communications manager  1110  described herein. The communications manager  1005  may include a report reception component  1010 , a configuration scheduling component  1015 , a concurrent reception component  1020 , a decoding component  1025 , a path quality component  1030 , a resource component  1035 , and a power parameter component  1040 . Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The report reception component  1010  may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel. 
     In some examples, the report reception component  1010  may receive the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     The configuration scheduling component  1015  may transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. 
     In some examples, the configuration scheduling component  1015  may transmit the transmission configuration that includes a resource assignment that indicates the resource. 
     In some examples, the configuration scheduling component  1015  may transmit the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     In some examples, the configuration scheduling component  1015  may transmit the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     In some cases, the first transmission parameter is a first MCS for the sidelink transmission, the second transmission parameter is a second MCS for the uplink transmission, or both. 
     The concurrent reception component  1020  may receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     In some examples, the concurrent reception component  1020  may receive the concurrent sidelink and uplink transmission based on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     In some examples, the concurrent reception component  1020  may receive the concurrent sidelink and uplink transmission based on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     In some examples, the concurrent reception component  1020  may receive the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based on the power control parameter. 
     The decoding component  1025  may decode the concurrent sidelink and uplink transmission based on the transmission configuration and cancelling a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     The path quality component  1030  may receive a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration is based on the first path quality metric and the second path quality metric. 
     In some cases, each of the first path quality metric and the second path quality metric is a path loss metric. 
     The resource component  1035  may receive a sidelink resource request, where the transmission configuration is received based on the sidelink resource request. 
     In some examples, the resource component  1035  may receive an uplink resource request, where the transmission configuration is received based on the uplink resource request. 
     The power parameter component  1040  may transmit the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     In some examples, the power parameter component  1040  may transmit the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission. 
       FIG. 11  shows a diagram of a system  1100  including a device  1105  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The device  1105  may be an example of or include the components of device  805 , device  905 , or a base station  105  as described herein. The device  1105  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager  1110 , a network communications manager  1115 , a transceiver  1120 , an antenna  1125 , memory  1130 , a processor  1140 , and an inter-station communications manager  1145 . These components may be in electronic communication via one or more buses (e.g., bus  1150 ). 
     The communications manager  1110  may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel, transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel, and receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. 
     The network communications manager  1115  may manage communications with the core network (e.g., via one or more wired backhaul links). For example, the network communications manager  1115  may manage the transfer of data communications for client devices, such as one or more UEs  115 . 
     The transceiver  1120  may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver  1120  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  1120  may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. 
     In some cases, the wireless device may include a single antenna  1125 . However, in some cases the device may have more than one antenna  1125 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. 
     The memory  1130  may include RAM, ROM, or a combination thereof. The memory  1130  may store computer-readable code  1135  including instructions that, when executed by a processor (e.g., the processor  1140 ) cause the device to perform various functions described herein. In some cases, the memory  1130  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  1140  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  1140  may be configured to operate a memory array using a memory controller. In some cases, a memory controller may be integrated into processor  1140 . The processor  1140  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  1130 ) to cause the device  1105  to perform various functions (e.g., functions or tasks supporting concurrent sidelink and uplink transmission). 
     The inter-station communications manager  1145  may manage communications with other base station  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  1145  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  1145  may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations  105 . 
     The code  1135  may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code  1135  may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code  1135  may not be directly executable by the processor  1140  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. 
       FIG. 12  shows a flowchart illustrating a method  1200  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The operations of method  1200  may be implemented by a UE  115  or its components as described herein. For example, the operations of method  1200  may be performed by a communications manager as described with reference to  FIGS. 4 through 7 . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware. 
     At  1205 , the UE may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel. The operations of  1205  may be performed according to the methods described herein. In some examples, aspects of the operations of  1205  may be performed by a report component as described with reference to  FIGS. 4 through 7 . 
     At  1210 , the UE may receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. The operations of  1210  may be performed according to the methods described herein. In some examples, aspects of the operations of  1210  may be performed by a configuration component as described with reference to  FIGS. 4 through 7 . 
     At  1215 , the UE may transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The operations of  1215  may be performed according to the methods described herein. In some examples, aspects of the operations of  1215  may be performed by a concurrent transmission component as described with reference to  FIGS. 4 through 7 . 
       FIG. 13  shows a flowchart illustrating a method  1300  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The operations of method  1300  may be implemented by a UE  115  or its components as described herein. For example, the operations of method  1300  may be performed by a communications manager as described with reference to  FIGS. 4 through 7 . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware. 
     At  1305 , the UE may transmit a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel. The operations of  1305  may be performed according to the methods described herein. In some examples, aspects of the operations of  1305  may be performed by a report component as described with reference to  FIGS. 4 through 7 . 
     At  1310 , the UE may transmit a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, where the transmission configuration is based on the first path quality metric and the second path quality metric. The operations of  1310  may be performed according to the methods described herein. In some examples, aspects of the operations of  1310  may be performed by a quality component as described with reference to  FIGS. 4 through 7 . 
     At  1315 , the UE may receive, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. The operations of  1315  may be performed according to the methods described herein. In some examples, aspects of the operations of  1315  may be performed by a configuration component as described with reference to  FIGS. 4 through 7 . 
     At  1320 , the UE may transmit the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The operations of  1320  may be performed according to the methods described herein. In some examples, aspects of the operations of  1320  may be performed by a concurrent transmission component as described with reference to  FIGS. 4 through 7 . 
       FIG. 14  shows a flowchart illustrating a method  1400  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The operations of method  1400  may be implemented by a base station  105  or its components as described herein. For example, the operations of method  1400  may be performed by a communications manager as described with reference to  FIGS. 8 through 11 . In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware. 
     At  1405 , the base station may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel. The operations of  1405  may be performed according to the methods described herein. In some examples, aspects of the operations of  1405  may be performed by a report reception component as described with reference to  FIGS. 8 through 11 . 
     At  1410 , the base station may transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. The operations of  1410  may be performed according to the methods described herein. In some examples, aspects of the operations of  1410  may be performed by a configuration scheduling component as described with reference to  FIGS. 8 through 11 . 
     At  1415 , the base station may receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The operations of  1415  may be performed according to the methods described herein. In some examples, aspects of the operations of  1415  may be performed by a concurrent reception component as described with reference to  FIGS. 8 through 11 . 
       FIG. 15  shows a flowchart illustrating a method  1500  that supports concurrent sidelink and uplink transmission in accordance with aspects of the present disclosure. The operations of method  1500  may be implemented by a base station  105  or its components as described herein. For example, the operations of method  1500  may be performed by a communications manager as described with reference to  FIGS. 8 through 11 . In some examples, a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware. 
     At  1505 , the base station may receive a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel. The operations of  1505  may be performed according to the methods described herein. In some examples, aspects of the operations of  1505  may be performed by a report reception component as described with reference to  FIGS. 8 through 11 . 
     At  1510 , the base station may transmit, based on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel. The operations of  1510  may be performed according to the methods described herein. In some examples, aspects of the operations of  1510  may be performed by a configuration scheduling component as described with reference to  FIGS. 8 through 11 . 
     At  1515 , the base station may transmit the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. The operations of  1515  may be performed according to the methods described herein. In some examples, aspects of the operations of  1515  may be performed by a power parameter component as described with reference to  FIGS. 8 through 11 . 
     At  1520 , the base station may receive the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based on the transmission configuration. The operations of  1520  may be performed according to the methods described herein. In some examples, aspects of the operations of  1520  may be performed by a concurrent reception component as described with reference to  FIGS. 8 through 11 . 
     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. 
     The following provides an overview of aspects of the present disclosure: 
     Aspect 1: A method for wireless communications by a UE, comprising: transmitting a report indicating a capability of the UE to concurrently transmit over a sidelink channel and an uplink channel; receiving, based at least in part on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel; and transmitting the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based at least in part on the transmission configuration. 
     Aspect 2: The method of aspect 1, wherein transmitting the report comprises: transmitting the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     Aspect 3: The method of any of aspects 1 through 2, wherein transmitting the concurrent sidelink and uplink transmission comprises: transmitting the concurrent sidelink and uplink transmission based at least in part on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     Aspect 4: The method of any of aspects 1 through 3, wherein transmitting the concurrent sidelink and uplink transmission comprises: transmitting the concurrent sidelink and uplink transmission based at least in part on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     Aspect 5: The method of any of aspects 1 through 4, further comprising: transmitting a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, wherein the transmission configuration is based at least in part on the first path quality metric and the second path quality metric. 
     Aspect 6: The method of aspect 5, wherein each of the first path quality metric and the second path quality metric is a path loss metric. 
     Aspect 7: The method of any of aspects 1 through 6, further comprising: transmitting a sidelink resource request, wherein the transmission configuration is received based at least in part on the sidelink resource request. 
     Aspect 8: The method of any of aspects 1 through 7, further comprising: transmitting an uplink resource request, wherein the transmission configuration is received based at least in part on the uplink resource request. 
     Aspect 9: The method of any of aspects 1 through 8, wherein receiving the transmission configuration comprises: receiving the transmission configuration that includes a resource assignment that indicates the resource. 
     Aspect 10: The method of any of aspects 1 through 9, wherein receiving the transmission configuration comprises: receiving the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     Aspect 11: The method of any of aspects 1 through 10, wherein receiving the transmission configuration comprises: receiving the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     Aspect 12: The method of aspect 11, wherein the first transmission parameter is a first modulation and coding scheme for the sidelink transmission, the second transmission parameter is a second modulation and coding scheme for the uplink transmission, or both. 
     Aspect 13: The method of any of aspects 1 through 12, wherein receiving the transmission configuration comprises: receiving the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     Aspect 14: The method of aspect 13, wherein receiving the transmission configuration comprises: receiving the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission. 
     Aspect 15: The method of aspect 14, wherein transmitting the concurrent sidelink and uplink transmission comprises: transmitting the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based at least in part on the power control parameter. 
     Aspect 16: A method for wireless communications by a base station, comprising: receiving a report indicating a capability of a UE to concurrently transmit over a sidelink channel and an uplink channel; transmitting, based at least in part on the report, a transmission configuration scheduling a concurrent sidelink and uplink transmission within a resource shared by the sidelink channel and the uplink channel; and receiving the concurrent sidelink and uplink transmission within the resource shared by the sidelink channel and the uplink channel based at least in part on the transmission configuration. 
     Aspect 17: The method of aspect 16, wherein receiving the report comprises: receiving the report that includes an indication of intent to concurrently transmit over the sidelink channel and the uplink channel. 
     Aspect 18: The method of any of aspects 16 through 17, wherein receiving the concurrent sidelink and uplink transmission comprises: receiving the concurrent sidelink and uplink transmission based at least in part on a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     Aspect 19: The method of any of aspects 16 through 18, wherein receiving the concurrent sidelink and uplink transmission comprises: receiving the concurrent sidelink and uplink transmission based at least in part on an uplink transmission encoded as an enhancement layer of the concurrent sidelink and uplink transmission. 
     Aspect 20: The method of aspect 19, further comprising: decoding the concurrent sidelink and uplink transmission based at least in part on the transmission configuration and cancelling a sidelink transmission encoded as a base layer of the concurrent sidelink and uplink transmission. 
     Aspect 21: The method of any of aspects 16 through 20, further comprising: receiving a first path quality metric of the sidelink channel and a second path quality metric of the uplink channel, wherein the transmission configuration is based at least in part on the first path quality metric and the second path quality metric. 
     Aspect 22: The method of any of aspects 16 through 21, further comprising: receiving a sidelink resource request, wherein the transmission configuration is received based at least in part on the sidelink resource request. 
     Aspect 23: The method of any of aspects 16 through 22, further comprising: receiving an uplink resource request, wherein the transmission configuration is received based at least in part on the uplink resource request. 
     Aspect 24: The method of any of aspects 16 through 23, wherein transmitting the transmission configuration comprises: transmitting the transmission configuration that includes a resource assignment that indicates the resource. 
     Aspect 25: The method of any of aspects 16 through 24, wherein transmitting the transmission configuration comprises: transmitting the transmission configuration that indicates a grant for scheduling the concurrent sidelink and uplink transmission. 
     Aspect 26: The method of any of aspects 16 through 25, wherein transmitting the transmission configuration comprises: transmitting the transmission configuration that indicates a first transmission parameter for a sidelink transmission of the concurrent sidelink and uplink transmission and a second transmission parameter for an uplink transmission of the concurrent sidelink and uplink transmission, or both. 
     Aspect 27: The method of any of aspects 16 through 26, wherein transmitting the transmission configuration comprises: transmitting the transmission configuration that indicates a power split between a sidelink transmission of the concurrent sidelink and uplink transmission and an uplink transmission of the concurrent sidelink and uplink transmission. 
     Aspect 28: The method of aspect 27, wherein transmitting the transmission configuration comprises: transmitting the transmission configuration that indicates a power control parameter for the concurrent sidelink and uplink transmission; and receiving the concurrent sidelink and uplink transmission in accordance with the power split and a power budget determined based at least in part on the power control parameter. 
     Aspect 29: An apparatus for wireless communications by a 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 15. 
     Aspect 30: An apparatus for wireless communications by a UE, comprising at least one means for performing a method of any of aspects 1 through 15. 
     Aspect 31: A non-transitory computer-readable medium storing code for wireless communications by a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 15. 
     Aspect 32: An apparatus for wireless communications by 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 16 through 28. 
     Aspect 33: An apparatus for wireless communications by a base station, comprising at least one means for performing a method of any of aspects 16 through 28. 
     Aspect 34: A non-transitory computer-readable medium storing code for wireless communications by a base station, the code comprising instructions executable by a processor to perform a method of any of aspects 16 through 28. 
     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 random-access memory (RAM), read-only memory (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.