Patent Publication Number: US-2022239329-A1

Title: Method and system for switching between half duplex and full duplex in multi-trp systems

Description:
BACKGROUND 
     Technical Field 
     The present disclosure relates generally to communication systems, and more particularly, a configuration for switching between half duplex and full duplex in multi transmission reception point (TRP) systems. 
     Introduction 
     Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems. 
     These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Aspects of wireless communication may comprise direct communication between devices, such as in V2X, V2V, and/or D2D communication. There exists a need for further improvements in V2X, V2V, and/or D2D technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. 
     SUMMARY 
     The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. 
     In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a device at a first wireless device. The device may be a processor and/or a modem at a first wireless device or the first wireless device itself. The apparatus detects a second wireless device in a vicinity of a first wireless device. The apparatus determines a duplex configuration of the second wireless device. The apparatus enables a duplex configuration of the first wireless device to correspond with the duplex configuration of the second wireless device. The apparatus communicates with the second wireless device based on the duplex configuration. 
     In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a device at a second wireless device. The device may be a processor and/or a modem at a second wireless device or the second wireless device itself. The apparatus receives, from a first wireless device, a duplex capability of the first wireless device. The apparatus transmits, to the first wireless device, a request to operate in a duplex configuration supported by the first wireless device. The apparatus enables a duplex configuration of a second wireless device to correspond with the duplex configuration supported by the first wireless device. The apparatus communicates with the first wireless device based on the duplex configuration. 
     To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram illustrating an example of a wireless communications system and an access network. 
         FIG. 2  illustrate example aspects of a sidelink slot structure. 
         FIG. 3  is a diagram illustrating an example of a first device and a second device involved in wireless communication based, e.g., on V2V, V2X, and/or device-to-device communication. 
         FIG. 4  is a diagram illustrating an example of a first device and a second device involved in wireless communication based, e.g., on sidelink communication. 
         FIG. 5A  is a diagram illustrating an example of a multi-TRP (mTRP) device. 
         FIGS. 5B and 5C  are diagrams illustrating example architectures of an mTRP device. 
         FIG. 6A  is a diagram illustrating an example of a full duplex architecture for an mTRP device. 
         FIG. 6B  is a diagram illustrating an example of a half duplex architecture for an mTRP device. 
         FIG. 7  is a diagram illustrating an example of a half duplex architecture for an mTRP device. 
         FIG. 8  is a call flow diagram of signaling between a first wireless device and a second wireless device. 
         FIG. 9  is a flowchart of a method of wireless communication. 
         FIG. 10  is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system. 
         FIG. 11  is a flowchart of a method of wireless communication. 
         FIG. 12  is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system. 
     
    
    
     DETAILED DESCRIPTION 
     The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts. 
     Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. 
     By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. 
     Accordingly, in one or more example embodiments, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer. 
       FIG. 1  is a diagram illustrating an example of a wireless communications system and an access network  100 . The wireless communications system (also referred to as a wireless wide area network (WWAN)) includes base stations  102 , UEs  104 , an Evolved Packet Core (EPC)  160 , and a Core Network (e.g., 5GC)  190 . The base stations  102  may include macro cells (high power cellular base station) and/or small cells (low power cellular base station). The macro cells include base stations. The small cells include femtocells, picocells, and microcells. 
     The base stations  102  configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC  160  through backhaul links  132  (e.g., S1 interface). The base stations  102  configured for NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with Core Network  190  through backhaul links  184 . In addition to other functions, the base stations  102  may perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations  102  may communicate directly or indirectly (e.g., through the EPC  160  or Core Network  190 ) with each other over backhaul links  134  (e.g., X2 interface). The backhaul links  134  may be wired or wireless. 
     The base stations  102  may wirelessly communicate with the UEs  104 . Each of the base stations  102  may provide communication coverage for a respective geographic coverage area  110 . There may be overlapping geographic coverage areas  110 . For example, the small cell  102 ′ may have a coverage area  110 ′ that overlaps the coverage area  110  of one or more macro base stations  102 . A network that includes both small cell and macro cells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs), which may provide service to a restricted group known as a closed subscriber group (CSG). The communication links  120  between the base stations  102  and the UEs  104  may include uplink (UL) (also referred to as reverse link) transmissions from a UE  104  to a base station  102  and/or downlink (DL) (also referred to as forward link) transmissions from a base station  102  to a UE  104 . The communication links  120  may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity. The communication links may be through one or more carriers. The base stations  102 /UEs  104  may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or less carriers may be allocated for DL than for UL). The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell). 
     Certain UEs  104  may communicate with each other using device-to-device (D2D) communication link  158 . The D2D communication link  158  may use the DL/UL WWAN spectrum. The D2D communication link  158  may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be through a variety of wireless D2D communications systems, such as for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR. 
     The wireless communications system may further include a Wi-Fi access point (AP)  150  in communication with Wi-Fi stations (STAs)  152  via communication links  154  in a 5 GHz unlicensed frequency spectrum. When communicating in an unlicensed frequency spectrum, the STAs  152 /AP  150  may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available. 
     The small cell  102 ′ may operate in a licensed and/or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell  102 ′ may employ NR and use the same 5 GHz unlicensed frequency spectrum as used by the Wi-Fi AP  150 . The small cell  102 ′, employing NR in an unlicensed frequency spectrum, may boost coverage to and/or increase capacity of the access network. A base station  102 , whether a small cell  102 ′ or a large cell (e.g., macro base station), may include an eNB, gNodeB (gNB), or other type of base station. Some base stations, such as gNB  180  may operate in a traditional sub 6 GHz spectrum, in millimeter wave (mmW) frequencies, and/or near mmW frequencies in communication with the UE  104 . When the gNB  180  operates in mmW or near mmW frequencies, the gNB  180  may be referred to as an mmW base station. Extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. Radio waves in the band may be referred to as a millimeter wave. Near mmW may extend down to a frequency of 3 GHz with a wavelength of 100 millimeters. The super high frequency (SHF) band extends between 3 GHz and 30 GHz, also referred to as centimeter wave. Communications using the mmW/near mmW radio frequency band has extremely high path loss and a short range. The mmW base station  180  may utilize beamforming  182  with the UE  104  to compensate for the extremely high path loss and short range. 
     Devices may use beamforming to transmit and receive communication. For example,  FIG. 1  illustrates that a base station  180  may transmit a beamformed signal to the UE  104  in one or more transmit directions  182 ′. The UE  104  may receive the beamformed signal from the base station  180  in one or more receive directions  182 ″. The UE  104  may also transmit a beamformed signal to the base station  180  in one or more transmit directions. The base station  180  may receive the beamformed signal from the UE  104  in one or more receive directions. The base station  180 /UE  104  may perform beam training to determine the best receive and transmit directions for each of the base station  180 /UE  104 . The transmit and receive directions for the base station  180  may or may not be the same. The transmit and receive directions for the UE  104  may or may not be the same. Although beamformed signals are illustrated between UE  104  and base station  102 / 180 , aspects of beamforming may similarly may be applied by UE  104  or RSU  107  to communicate with another UE  104  or RSU  107 , such as based on sidelink communication such as V2X or D2D communication. 
     The EPC  160  may include a Mobility Management Entity (MME)  162 , other MMES  164 , a Serving Gateway  166 , a Multimedia Broadcast Multicast Service (MBMS) Gateway  168 , a Broadcast Multicast Service Center (BM-SC)  170 , and a Packet Data Network (PDN) Gateway  172 . The MME  162  may be in communication with a Home Subscriber Server (HSS)  174 . The MME  162  is the control node that processes the signaling between the UEs  104  and the EPC  160 . Generally, the MME  162  provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the Serving Gateway  166 , which itself is connected to the PDN Gateway  172 . The PDN Gateway  172  provides UE IP address allocation as well as other functions. The PDN Gateway  172  and the BM-SC  170  are connected to the IP Services  176 . The IP Services  176  may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS Streaming Service, and/or other IP services. The BM-SC  170  may provide functions for MBMS user service provisioning and delivery. The BM-SC  170  may serve as an entry point for content provider MBMS transmission, may be used to authorize and initiate MBMS Bearer Services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway  168  may be used to distribute MBMS traffic to the base stations  102  belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start/stop) and for collecting eMBMS related charging information. 
     The Core Network  190  may include a Access and Mobility Management Function (AMF)  192 , other AMFs  193 , a Session Management Function (SMF)  194 , and a User Plane Function (UPF)  195 . The AMF  192  may be in communication with a Unified Data Management (UDM)  196 . The AMF  192  is the control node that processes the signaling between the UEs  104  and the Core Network  190 . Generally, the AMF  192  provides QoS flow and session management. All user Internet protocol (IP) packets are transferred through the UPF  195 . The UPF  195  provides UE IP address allocation as well as other functions. The UPF  195  is connected to the IP Services  197 . The IP Services  197  may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS Streaming Service, and/or other IP services. 
     The base station may also be referred to as a gNB, Node B, evolved Node B (eNB), an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. The base station  102  provides an access point to the EPC  160  or Core Network  190  for a UE  104 . Examples of UEs  104  include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor/actuator, a display, or any other similar functioning device. Some of the UEs  104  may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc.). The UE  104  may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. 
     Some wireless communication networks may include vehicle-based communication devices that can communicate from vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) (e.g., from the vehicle-based communication device to road infrastructure nodes such as a Road Side Unit (RSU)), vehicle-to-network (V2N) (e.g., from the vehicle-based communication device to one or more network nodes, such as a base station), cellular-vehicle-to everything (C-V2X), enhanced V2X (e-V2X), and/or a combination thereof and/or with other devices, which can be collectively referred to as vehicle-to-anything (V2X) communications. Referring again to  FIG. 1 , in certain aspects, a UE  104 , e.g., a transmitting Vehicle User Equipment (VUE) or other UE, may be configured to transmit messages directly to another UE  104 . The communication may be based on V2X or other D2D communication, such as Proximity Services (ProSe), etc. Communication based on V2X and/or D2D communication may also be transmitted and received by other transmitting and receiving devices, such as Road Side Unit (RSU)  107 , etc. Aspects of the communication may be based on PC5 or sidelink communication e.g., as described in connection with the example in  FIG. 2 . Although the following description may provide examples for V2X/D2D communication in connection with 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies. 
     Referring again to  FIG. 1 , in certain aspects, the UE  104  may be configured to determine a duplex configuration of a second wireless device (e.g., UE  104 ′) that may be within the vicinity of the UE  104 . For example, the UE  104  may comprise a determination component  198  configured to determine the duplex configuration of the UE  104 ′. The UE  104  detects a UE  104 ′ in a vicinity of the UE  104 . The UE  104  determines a duplex configuration of the UE  104 ′. The UE  104  enables a duplex configuration of the UE  104  to correspond with the duplex configuration of the UE  104 ′. The UE  104  communicates with the UE  104 ′ based on the duplex configuration. 
     Referring again to  FIG. 1 , in certain aspects, the UE  104 ′ may be configured to request to communicate with a first wireless device (e.g., UE  104 ) in a configuration that is supported by the UE  104 . For example, the UE  104  may comprise a request component  199  configured to transmit a request to communicate with the UE  104 . The UE  104 ′ receives, from the UE  104 , a duplex capability of the UE  104 . The UE  104 ′ transmits, to the UE  104 , a request to operate in a duplex configuration supported by the UE  104 . The UE  104 ′ enables a duplex configuration of the UE  104 ′ to correspond with the duplex configuration supported by the UE  104 . The UE  104 ′ communicates with the UE  104  based on the duplex configuration. 
       FIG. 2  illustrates an example diagram  200  illustrating a sidelink subframe within a frame structure that may be used for sidelink communication, e.g., between UEs  104 , between a UE and infrastructure, between a UE and an RSU, etc. The frame structure may be within an LTE frame structure. Although the following description may be focused on LTE, the concepts described herein may be applicable to other similar areas, such as 5G NR, LTE-A, CDMA, GSM, and other wireless technologies. This is merely one example, and other wireless communication technologies may have a different frame structure and/or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms). Each subframe may include two slots. Each slot may include 7 SC-FDMA symbols. For slot configuration 0, each slot may include 14 symbols, and for slot configuration 1, each slot may include 7 symbols. Although the diagram  200  illustrates a single RB subframe, the sidelink communication may include multiple RBs. 
     A resource grid may be used to represent the frame structure. Each time slot may include a resource block (RB) (also referred to as physical RBs (PRBs)) that extends  12  consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme. As illustrated in  FIG. 2 , some of the REs may include a reference signal, such as a demodulation RS (DMRS). At least one symbol may be used for feedback, as described herein. A symbol prior to and/or after the feedback may be used for turnaround between reception of data and transmission of the feedback. Another symbol, e.g., at the end of the subframe may be used as a guard symbol without transmission/reception. The guard enables a device to switch from operating as a transmitting device to prepare to operate as a receiving device, e.g., in the following subframe. Data or control may be transmitted in the remaining REs, as illustrated. For example, data may be carried in a PSSCH, and the control information may be carried in a PSCCH. The control information may comprise Sidelink Control Information (SCI). The position of any of the reference signals, control, and data may be different than the example illustrated in  FIG. 2 . 
       FIG. 2  merely illustrates one, non-limiting example of a frame structure that may be used. Aspects described herein may be applied to communication using other, different frame formats. 
       FIG. 3  is a block diagram of a first wireless communication device  310  in communication with a second wireless communication device  350 , e.g., via V2V/V2X/other communication. The device  310  may comprise a transmitting device communicating with a receiving device, e.g., device  350 . The communication may be based, e.g., on sidelink. The transmitting device  310  may comprise a UE, an RSU, etc. The receiving device may comprise a UE, an RSU, etc. Packets may be provided to a controller/processor  375  that implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. 
     The transmit (TX) processor  316  and the receive (RX) processor  370  implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding/decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation/demodulation of physical channels, and MIMO antenna processing. The TX processor  316  handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator  374  may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the device  350 . Each spatial stream may then be provided to a different antenna  320  via a separate transmitter  318 TX. Each transmitter  318 TX may modulate an RF carrier with a respective spatial stream for transmission. 
     At the device  350 , each receiver  354 RX receives a signal through its respective antenna  352 . Each receiver  354 RX recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor  356 . The TX processor  368  and the RX processor  356  implement layer 1 functionality associated with various signal processing functions. The RX processor  356  may perform spatial processing on the information to recover any spatial streams destined for the device  350 . If multiple spatial streams are destined for the device  350 , they may be combined by the RX processor  356  into a single OFDM symbol stream. The RX processor  356  then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by device  310 . These soft decisions may be based on channel estimates computed by the channel estimator  358 . The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by device  310  on the physical channel. The data and control signals are then provided to the controller/processor  359 , which implements layer 3 and layer 2 functionality. 
     The controller/processor  359  can be associated with a memory  360  that stores program codes and data. The memory  360  may be referred to as a computer-readable medium. The controller/processor  359  may provide demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing. The controller/processor  359  is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations. 
     Similar to the functionality described in connection with the transmission by device  310 , the controller/processor  359  may provide RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression/decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization. 
     Channel estimates derived by a channel estimator  358  from a reference signal or feedback transmitted by device  310  may be used by the TX processor  368  to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor  368  may be provided to different antenna  352  via separate transmitters  354 TX. Each transmitter  354 TX may modulate an RF carrier with a respective spatial stream for transmission. 
     The transmission is processed at the device  310  in a manner similar to that described in connection with the receiver function at the device  350 . Each receiver  318 RX receives a signal through its respective antenna  320 . Each receiver  318 RX recovers information modulated onto an RF carrier and provides the information to a RX processor  370 . 
     The controller/processor  375  can be associated with a memory  376  that stores program codes and data. The memory  376  may be referred to as a computer-readable medium. The controller/processor  375  provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing. The controller/processor  375  is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations. 
     At least one of the TX processor  368 , the RX processor  356 , or the controller/processor  359  of device  350  or the TX  316 , the RX processor  370 , or the controller/processor  375  may be configured to perform aspects described in connection with  198  or  199  of  FIG. 1 . 
       FIG. 4  illustrates an example  400  of wireless communication between devices based on sidelink communication, such as V2X or other D2D communication. The communication may be based on a slot structure comprising aspects described in connection with  FIG. 2 . For example, transmitting UE  402  may transmit a transmission  414 , e.g., comprising a control channel and/or a corresponding data channel, that may be received by receiving UEs  404 ,  406 ,  408 . At least one UE may comprise an autonomous vehicle or an unmanned aerial vehicle. A control channel may include information for decoding a data channel and may also be used by receiving device to avoid interference by refraining from transmitting on the occupied resources during a data transmission. The number of TTIs, as well as the RBs that will be occupied by the data transmission, may be indicated in a control message from the transmitting device. The UEs  402 ,  404 ,  406 ,  408  may each be capable of operating as a transmitting device in addition to operating as a receiving device. Thus, UEs  406 ,  408  are illustrated as transmitting transmissions  416 ,  420 . The transmissions  414 ,  416 ,  420  may be broadcast or multicast to nearby devices. For example, UE  414  may transmit communication intended for receipt by other UEs within a range  401  of UE  414 . Additionally/alternatively, RSU  407  may receive communication from and/or transmit communication to UEs  402 ,  404 ,  406 ,  408 . 
     UE  402 ,  404 ,  406 ,  408  or RSU  407  may comprise a determination component, similar to  198  described in connection with  FIG. 1 . 
     Multi TRP (mTRP) systems may have the flexibility to provide or adapt radio coverage by installing transmission points based on need. Generally, baseband processing may be performed in a centralized unit and RF processing may be performed near the transmission points. A vehicle UE (VUE) may be a natural candidate where mTRP systems may be installed. For example, a VUE may include a TRP installed at the front of the vehicle and may include another TRP installed at the rear of the vehicle, as shown for example in the diagram  500  of  FIG. 5A . The VUE  502  may be include TRPs installed in different locations of the vehicle and the disclosure is not intended to be limited to the examples disclosed herein. 
     In some instances, each TRP  504 ,  506  may have its own modem  512 ,  514 , as shown for example in diagram  510  of  FIG. 5B . In instances where each TRP  504 ,  506  has its own modem  512 ,  514 , the VUE  502  may have multiple distributed units. In some instances, the TRPs  504 ,  506  may share a central unit or common modem  512 , as shown for example in diagram  520  of  FIG. 5C . Multiple TRPs and multiple modems panels may offer flexibility in allowing the wireless device or UE to be able to operate either as two independent UEs (e.g.,  510 ) or as one UE (e.g.,  520 ). 
     In situations where the VUE  502  finds another VUE that also has a plurality of TRPs, the VUE  502  may behave or communicate with the other VUE however the VUE  502  wants. However, the VUE  502  (or other wireless devices) having a plurality of TRPs may not be efficiently communicate with a wireless device that does not have a plurality of TRPs. Aspects presented herein provide a configuration to allow a wireless device having a plurality of TRPs (e.g., VUE  502 ) to adjust or modify its configuration in instances where the wireless device having the plurality of TRPs communicates with a wireless device that does not have a plurality of TRPs and/or a plurality of modems. 
     In some instances, a wireless device may comprise one or more TRP with one or more modems. The wireless device may be configured to reconfigure itself to operate as a full duplex wireless device or a half duplex wireless device for communication with differently configured wireless devices. In some instances, a wireless device may utilize the one or more TRPs and the one or more modems to operate as one or more independent half duplex wireless devices. The wireless device may utilize the one or more TRPs and the one or more modems to operate as the one or more independent half duplex wireless devices (e.g., UE or VUE) in instances where half duplex wireless devices (e.g., UE or VUE) are in the vicinity of the wireless device. In some instances, a wireless device may utilize two or more TRPs and two or more modems to operate as a full duplex wireless device (e.g., UE or VUE) in instances where there may be one or more full duplex wireless devices are in the vicinity of the wireless device. At least one advantage of the disclosure is that the wireless device may increase its spectral efficiency by utilizing the two or more TRPs and the two or more modems to operate as the full duplex wireless device. In some instances, a first wireless device comprising multiple TRPs may instruct a second wireless device comprising multiple TRPs to change from a half duplex mode to a full duplex mode. In some instances, the instructions from the first wireless device to the second wireless device may enable the second wireless device to configure itself similarly as the first wireless device. For example, the instructions may instruct the second wireless device to switch from a multiple half duplex configuration to a single full duplex configuration. 
       FIG. 6A  illustrates a diagram  600  of a full duplex architecture for an mTRP UE. The mTRP UE of  FIG. 6A  may comprise two mTRP panels which includes a first TRP TRP 1   604  and a second TRP TRP 2   606 . TRP 1   604  includes an RF processor  608  and a converter  610  configured to convert analog to digital and digital to analog signals. TRP 2   606  also includes an RF processor  608  and a converter  610 . The TRP 1   604  and the TRP 2   606  share a common modem  612  and a common application processor  614 . In some aspects, the mTRP UE of  FIG. 6A  may behave as one full duplex UE. For example, the full duplex UE may use one TRP (e.g., TRP 1   604 ) as a transmit panel, while using the other TRP (e.g., TRP 2   606 ) as a receive panel with the common modem  612 . The entire stack (e.g., PHY, MAC, RLC, PDCP, RRC) may reside within the common modem  612 . Resource selection for transmission at the transmission panel (e.g., TRP 1   604 ) may be determined at the PHY of the common modem  612  based on reception at the receive panel (e.g., TRP 2   606 ). 
       FIG. 6B  illustrates a diagram  620  of a half duplex architecture for an mTRP UE. The mTRP UE of  FIG. 6B  may comprise two mTRP panels which includes a first TRP TRP 1   626  and a second TRP TRP 2   628 , similarly as the mTRP UE of  FIG. 6A . TRP 1   626  includes an RF processor  630  and a converter  632  configured to convert analog to digital and digital to analog signals. TRP 2   628  also includes an RF processor  630  and a converter  632 . However, in the mTRP UE of  FIG. 6B  each of the TRPs have a dedicated modem  634 , while sharing a common application processor  636 . In some aspects, the mTRP UE of  FIG. 6B  may behave as two independent half duplex UEs, UE 1   622  and UE 2   624 . For example, the two independent half duplex UEs (e.g., UE 1   622 , UE 2   624 ) each use one TRP (e.g., TRP 1   626 , TRP 2   628 ) and a respective modem  634 . Both UE 1   622  and UE 2   624  share the same application processor  636 . In some aspects, to balance the load between UE 1   622  and UE 2   624 , the common application processor  636  may route the application traffic into UE 1   622  or UE 2   624  based on quality of service. Each of the UEs UE 1   622 , UE 2   624  may have their own identifier and may transmit/receive control or data channels. Resource selection or reservation may be performed at the respective modem  634  independently for each of UE 1   622  and UE 2   624 , such that UE 1   622  and UE 2   624  are independent at a lower layer perspective. 
       FIG. 7  illustrates a diagram  700  of a half duplex architecture for an mTRP UE. The mTRP UE of  FIG. 7  may comprise two mTRP panels which includes a first TRP TRP 1   706  and a second TRP TRP 2   708 . TRP 1   706  includes an RF processor  710  and a converter  712  configured to convert analog to digital and digital to analog signals. TRP 2   708  also includes an RF processor  710  and a converter  712 . However, in the mTRP UE of  FIG. 7  each of the TRPs have a dedicated modem  634 , while sharing a central modem  716  and common application processor  718 . In some aspects, the mTRP UE of  FIG. 7  may behave as two independent half duplex UEs, UE 1   702  and UE 2   704 . For example, the two independent half duplex UEs (e.g., UE 1   702 , UE 2   704 ) each use one TRP (e.g., TRP 1   706 , TRP 2   708 ) and a respective modem  714 . Both UE 1   702  and UE 2   704  share the same central modem  716  and the same application processor  718 . The modem functionality of each UE (e.g., UE 1   702  and UE 2   704 ) may be split between the respective modem  714  and the central modem  716 . 
     The self modem or respective modem  714  of each UE may decode the control channel or the data channel. For example, at  720 , UE 1   702  may decode the control channel and may forward resource reservations and other information decoded from other UEs (e.g., a first set of UEs) to the central modem  716 . At  722 , UE 2   704  may decode the control channel and may forward resource reservation and other information decoded from other UEs (e.g., a second set of UEs) to the central modem  716 . The second set of UEs may be the same or different than the first set of UEs. The central modem  716  obtains a global view of available resources from the decoded control channels obtained from UE 1   702  and UE 2   704 . At  724 , the central modem  716  provides the recommended resource availability to UE 1   702  and UE 2   704 , in response to the resource reservation requests from UE 1   702  and UE 2   704 . In some instances, the central modem  716  may provide exact resources to be used by UE 1   702  and UE 2   704  (e.g., based on the application layer load of UE 1   702  and UE 2   704 ). In some instances, UE 1   702  and UE 2   704  may independently select resources from the recommended resource availability provided by the central modem  716 . Each UE (e.g.,  702 ,  704 ) may transmit on such resources independently chosen from the recommended or provided resources specified by the central modem  716 . The UEs  702 ,  704  may operate independently due, in part, to the shared central modem  716  being able to communicate with the UEs  702 ,  704  at a lower layer. The shared central modem  716  may communicate with the UEs  702 ,  704  at the lower layer due to the respective modem  714  of each UE. The shared central modem  716  may coordinate with the respective modems  714  of UE 1   702  and UE 2   704  to ensure that transmissions from the UEs do not collide. For example, the central modem  716  may coordinate with the UEs, such that the two UEs do not select the same or overlapping resources. In some instances, if the resources of the UEs overlap, the central modem  716  may coordinate with the UEs  702 ,  704 , such that beam directions of UE 1   702  are different from the beam directions of UE 2   704  in instances where resources overlap. 
     In some aspects, the mTRP of  FIG. 7  may be configured to operate in a full duplex operation. For example, UE 1   702  may be configured to operate as the transmission chain of the full duplex operation, while UE 2   704  may be configured to operate as the receive chain of the full duplex operation (or vice versa). In this configuration, the combination of UE 1   702  and UE 2   704  may behave as one full duplex UE having a unique identifier, where UE 1   702  is the transmission chain and UE 2   704  is the receive chain. 
       FIG. 8  illustrates an example communication flow  800  between a first wireless device  802  and a second wireless device  804 . The communication may be based on V2X, V2V, or D2D based communication directly from a transmitting device to a receiving device. The communication transmitting from device  802 ,  804  may be broadcast and received by multiple receiving devices within range of a particular transmitting device, as described in connection with  FIG. 4 . The first wireless device  802  may correspond to a first UE or VUE, while the second wireless device  804  may correspond to a second UE or VUE. For example, in the context of  FIG. 1 , the first wireless device  802  may correspond to at least UE  104 , and the second wireless device may correspond to at least  104 ′. In another example, in the context of  FIG. 3 , the first wireless device  502  may correspond to the device  350 , and the second wireless device  504  may correspond to the device  310 . 
     As illustrated at  806 , the first wireless device  802  may detect a second wireless device  804  in a vicinity of the first wireless device  802 . The first wireless device  802  may detect the presence of the second wireless device  804  in the vicinity of the first wireless device  802  based at least on one or more signals (e.g., control signaling) received from the second wireless device  804 . In some aspects, the first wireless device  802  may determine that the second wireless device  804  is a half duplex device or a full duplex device based on control signals received from the second wireless device  804 . In some aspects, the first wireless device  802  may comprise one or more TRPs. The first wireless device  802  may operate as a full duplex device. In such aspects, the first wireless device  802  may comprise a first TRP that is a transmit panel and a second TRP that is a receive panel. In some aspects, the one or more TRPs of the first wireless device  802  may share a common modem. For example, resource selection for transmission at the first TRP may be determined at the shared common modem based on reception at the second TRP. In some aspects, the first wireless device  802  may operate as two independent half duplex devices. In some aspects, the first TRP and the second TRP of the one or more TRPs may each have a corresponding modem and share an application processor. For example, resource selection/reservation may be determined independently at the respective corresponding modems of the first TRP and the second TRP, while the first and second TRPs share the application processor. In some aspects, the first TRP and the second TRP of the one or more TRPs may each have a corresponding modem and share a central modem. The central modem may provide resource availability for the individual modems associated with the first TRP and the second TRP. In some aspects, the central modem may receive allocation requests from the modems associated with the first TRP and the second TRP. The central modem may provide the resource availability to the first modem associated with the first TRP and to the second modem associated with the second TRP based on the allocation requests from the first TRP and/or the second TRP. In some aspects, the first wireless device  802  may operate as a full duplex device. The first TRP may be a transmit panel of the full duplex device, and the second TRP may be a receive panel of the full duplex device. 
     In some aspects, for example as illustrated at  808 , the first wireless device  802  may report a duplex capability of the first wireless device  802  to the second wireless device  804 . For example, the first wireless device  802  may transmit, to the second wireless device  804 , an indication of the duplex capability of the first wireless device. The second wireless device  804  may receive the report (e.g., indication) of the duplex capability from the first wireless device  802 . The duplex capability may comprise a duplex configuration that may be supported by the first wireless device  802 . For example, the first wireless device  802  may be operating as two or more half duplex UEs and may transmit in the duplex capability, to the second wireless device  804 , the ability to operate in either a half duplex configuration or a full duplex configuration. 
     In some aspects, for example as illustrated at  810 , the second wireless device  804  may transmit a request to operate in a duplex configuration supported by the first wireless device  802 . The second wireless device may transmit the request to the first wireless device  802 . The first wireless device  802  may receive the request from the second wireless device  804 . In some aspects, the second wireless device  804  may support at least one of a full duplex configuration or a half duplex configuration. The request may include at least one of the full duplex configuration or the half duplex configuration. In some aspects, the second wireless device  802  may be operating as a half duplex UE, but may be capable of operating as either a half duplex UE or a full duplex UE receives the duplex capability from the first wireless device  802 . In some aspects, the request from the second wireless device  804  may request that the first wireless device  802  change their mode of operation from half duplex to full duplex. 
     As illustrated at  812 , the first wireless device  802  may determine a duplex configuration of the second wireless device  804 . In some aspects, the first wireless device  802  may determine the duplex configuration of the second wireless device  804  based on the request received from the second wireless device  804 . In some aspects, the second wireless device  804  may transmit signaling to the first wireless device  802  which indicates or advertises the duplex configuration of the second wireless device  804 . For example, the second wireless device  804  may transmit a duplex capability to the first wireless device  802 . 
     As illustrated at  814 , the first wireless device  802  may enable a duplex configuration of the first wireless device  802  to correspond with the duplex configuration of the second wireless device  804 . In some aspects, the duplex configuration supported by the first wireless device  802  may comprise at least one of a full duplex configuration or a half duplex configuration. 
     In some aspects, the first wireless device  802  may transmit, to the second wireless device  804 , a confirmation to acknowledge the request. The second wireless device may receive the confirmation to acknowledge the request from the first wireless device  802 . 
     As illustrated at  816 , the second wireless device  804  may enable a duplex configuration to correspond with the duplex configuration of the first wireless device  802  in response to receiving the confirmation from the first wireless device  802 . For example, both the first wireless device  802  and the second wireless device  804  may change their mode of operation from half duplex to full duplex in response to the request. 
     In some aspects, the first wireless device  802  may operate as a full duplex UE may infer the presence of half duplex only UEs in the vicinity of the first wireless device  802  based on control signaling received by the first wireless device  802 . In such aspects, to operate in an efficient manner, the first wireless device  802  may change its mode of operation from full duplex to one or more half duplex UEs, as shown for example in  FIGS. 6A, 6B, and 7 . In some aspects, the first wireless device  802  may be operating as a half duplex UE, but may be capable of operating as a full duplex UE, may infer the presence of full duplex only UEs in the vicinity of the first wireless device  802  and may change its mode of operation from half duplex to full duplex. 
     As illustrated at  818 , first wireless device  802  and the second wireless device  804  may communicate with each other. The first wireless device  802  and the second wireless device  804  may communicate with each other based on the duplex configuration indicated in the request or of the second wireless device  804  as determined by the first wireless device  802 . 
       FIG. 9  is a flowchart  900  of a method of wireless communication. The method is performed by a wireless device or a component of a wireless device (e.g., the UE  104 , device  310 , the apparatus  1002 ; the cellular baseband processor  1004 , which may include the memory  360  and which may be the entire device  350  or a component of the device, such as the TX processor  368 , the RX processor  356 , and/or the controller/processor  359 ). Among other examples, the wireless device may comprise a second UE. According to various aspects, one or more of the illustrated operations of the method  900  may be omitted, transposed, and/or contemporaneously performed. Optional aspects are illustrated with a dashed line. The method may enable a wireless device having one or more TRPs to configure the one or more TRPs based on configurations of other wireless devices. 
     At  902 , the first wireless device may detect a second wireless device in a vicinity of the first wireless device. For example,  902  may be performed by detection component  1040  of apparatus  1002 . The first wireless device may detect the presence of the second wireless device in the vicinity of the first wireless device based at least on one or more signals (e.g., control signaling) received from the second wireless device. In some aspects, the first wireless device may determine that the second wireless device is a half duplex device or a full duplex device based on control signals received from the second wireless device. In some aspects, the first wireless device may comprise one or more TRPs. The first wireless device may operate as a full duplex device. In such aspects, the first wireless device may comprise a first TRP that is a transmit panel and a second TRP that is a receive panel. In some aspects, the one or more TRPs of the first wireless device may share a common modem. For example, resource selection for transmission at the first TRP may be determined at the shared common modem based on reception at the second TRP. In some aspects, the first wireless device may operate as two independent half duplex devices. In some aspects, the first TRP and the second TRP of the one or more TRPs may each have a corresponding modem and share an application processor. For example, resource selection/reservation may be determined independently at the respective corresponding modems of the first TRP and the second TRP, while the first and second TRPs share the application processor. In some aspects, the first TRP and the second TRP of the one or more TRPs may each have a corresponding modem and share a central modem. The central modem may provide resource availability for the individual modems associated with the first TRP and the second TRP. In some aspects, the central modem may receive allocation requests from the modems associated with the first TRP and the second TRP. The central modem may provide the resource availability to the first modem associated with the first TRP and to the second modem associated with the second TRP based on the allocation requests from the first TRP and/or the second TRP. In some aspects, the first wireless device may operate as a full duplex device. The first TRP may be a transmit panel of the full duplex device, and the second TRP may be a receive panel of the full duplex device. 
     In some aspects, for example at  904 , the first wireless device may report a duplex capability of the first wireless device. For example,  904  may be performed by capability component  1042  of apparatus  1004 . The first wireless device may report the duplex capability of the first wireless device to the second wireless device. The duplex capability may comprise a duplex configuration that may be supported by the first wireless device. The first wireless device may report the duplex capability by transmitting, to the second wireless device, an indication of the duplex capability of the first wireless device. 
     In some aspects, for example at  906 , the first wireless device may receive a request to operate in one of the duplex configurations supported by the first wireless device. For example,  906  may be performed by request component  1044  of apparatus  1002 . The first wireless device may receive the request to operate in the one of the duplex configurations supported by the first wireless device from the second wireless device. In some aspects, the second wireless device may support at least one of a full duplex configuration or a half duplex configuration. The request to operate may include at least one of the full duplex configuration or the half duplex configuration. 
     At  908 , the first wireless device may determine a duplex configuration of the second wireless device. For example,  908  may be performed by determination component  1046  of apparatus  1002 . In some aspects, the first wireless device may determine the duplex configuration of the second wireless device based on the request received from the second wireless device. In some aspects, the second wireless device may transmit signaling to the first wireless device which indicates or advertises the duplex configuration of the second wireless device. For example, the second wireless device may transmit a duplex capability to the first wireless device. 
     At  910 , the first wireless device may enable a duplex configuration of the first wireless device to correspond with the duplex configuration of the second wireless device. For example,  910  may be performed by duplex component  1048  of apparatus  1002 . In some aspects, the duplex configuration supported by the first wireless device may comprise at least one of a full duplex configuration or a half duplex configuration. 
     At  912 , the first wireless device may communicate with the second wireless device. For example,  912  may be performed by communication component  1050  of apparatus  1002 . The first wireless device may communicate with the second wireless device based on the duplex configuration. 
       FIG. 10  is a diagram  1000  illustrating an example of a hardware implementation for an apparatus  1002 . The apparatus  1002  is a UE and includes a cellular baseband processor  1004  (also referred to as a modem) coupled to a cellular RF transceiver  1022  and one or more subscriber identity modules (SIM) cards  1020 , an application processor  1006  coupled to a secure digital (SD) card  1008  and a screen  1010 , a Bluetooth module  1012 , a wireless local area network (WLAN) module  1014 , a Global Positioning System (GPS) module  1016 , and a power supply  1018 . The cellular baseband processor  1004  communicates through the cellular RF transceiver  1022  with the UE  104  and/or BS  102 / 180 . The cellular baseband processor  1004  may include a computer-readable medium/memory. The computer-readable medium/memory may be non-transitory. The cellular baseband processor  1004  is responsible for general processing, including the execution of software stored on the computer-readable medium/memory. The software, when executed by the cellular baseband processor  1004 , causes the cellular baseband processor  1004  to perform the various functions described supra. The computer-readable medium/memory may also be used for storing data that is manipulated by the cellular baseband processor  1004  when executing software. The cellular baseband processor  1004  further includes a reception component  1030 , a communication manager  1032 , and a transmission component  1034 . The communication manager  1032  includes the one or more illustrated components. The components within the communication manager  1032  may be stored in the computer-readable medium/memory and/or configured as hardware within the cellular baseband processor  1004 . The cellular baseband processor  1004  may be a component of the UE  350  and may include the memory  360  and/or at least one of the TX processor  368 , the RX processor  356 , and the controller/processor  359 . In one configuration, the apparatus  1002  may be a modem chip and include just the cellular baseband processor  1004 , and in another configuration, the apparatus  1002  may be the entire UE (e.g., see  350  of  FIG. 3 ) and include the aforediscussed additional modules of the apparatus  1002 . 
     The communication manager  1032  includes a detection component  1040  that is configured to detect a second wireless device in a vicinity of the first wireless device, e.g., as described in connection with  902  of  FIG. 9 . The communication manager  1032  further includes a capability component  1042  that is configured to report a duplex capability of the first wireless device, e.g., as described in connection with  904  of  FIG. 9 . The communication manager  1032  further includes a request component  1044  that is configured to receive a request to operate in one of the duplex configurations supported by the first wireless device, e.g., as described in connection with  906  of  FIG. 9 . The communication manager  1032  further includes a determination component  1046  that is configured to determine a duplex configuration of the second wireless device, e.g., as described in connection with  908  of  FIG. 9 . The communication manager  1032  further includes a duplex component  1048  that is configured to enable a duplex configuration of the first wireless device to correspond with the duplex configuration of the second wireless device, e.g., as described in connection with  910  of  FIG. 9 . The communication manager  1032  further includes a communication component  1050  that is configured to communicate with the second wireless device, e.g., as described in connection with  912  of  FIG. 9 . 
     The apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned flowchart of  FIG. 9 . As such, each block in the aforementioned flowchart of  FIG. 9  may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof. 
     In one configuration, the apparatus  1002 , and in particular the cellular baseband processor  1004 , includes means for detecting a second wireless device in a vicinity of the first wireless device. The apparatus includes means for determining a duplex configuration of the second wireless device. The apparatus includes means for enabling a duplex configuration of the first wireless device to correspond with the duplex configuration of the second wireless device. The apparatus includes means for communicating with the second wireless device based on the duplex configuration. The apparatus further includes means for reporting, to the second wireless device, a duplex capability of the first wireless device. The duplex capability comprises a duplex configuration supported by the first wireless device. The apparatus further includes means for receiving, from the second wireless device, a request to operate in one of the duplex configuration supported by the first wireless device. The aforementioned means may be one or more of the aforementioned components of the apparatus  1002  configured to perform the functions recited by the aforementioned means. As described supra, the apparatus  1002  may include the TX Processor  368 , the RX Processor  356 , and the controller/processor  359 . As such, in one configuration, the aforementioned means may be the TX Processor  368 , the RX Processor  356 , and the controller/processor  359  configured to perform the functions recited by the aforementioned means. 
       FIG. 11  is a flowchart  1100  of a method of wireless communication. The method may be performed by a UE or a component of a UE (e.g., the UE  104 ′; the apparatus  1202 ; the cellular baseband processor  1204 , which may include the memory  360  and which may be the entire UE  350  or a component of the UE  350 , such as the TX processor  368 , the RX processor  356 , and/or the controller/processor  359 ). One or more of the illustrated operations may be omitted transposed, or contemporaneous. Optional aspects are illustrated with a dashed line. The method may enable a wireless device to request to operate in a duplex configuration supported by another wireless device. 
     At  1102 , the second wireless device may receive an indication of a duplex capability of a first wireless device. For example,  1102  may be performed by capability component  1240  of apparatus  1202 . The second wireless device may receive the indication of the duplex capability from the first wireless device. The second wireless device may receive the duplex capability from the first wireless device. In some aspects, the duplex capability of the first wireless device may comprise a duplex configuration supported by the first wireless device. In some aspects, the first wireless device may support at least one of a full duplex configuration or a half duplex configuration. 
     At  1104 , the second wireless device may transmit a request to operate in a duplex configuration supported by the first wireless device. For example,  1104  may be performed by request component  1242  of apparatus  1204 . The second wireless device may transmit the request to the first wireless device. In some aspects, the second wireless device may support at least one of a full duplex configuration or a half duplex configuration. The request may include at least one of the full duplex configuration or the half duplex configuration. 
     In some aspects, for example at  1106 , the second wireless device may receive a confirmation to acknowledge the request to operate in the duplex configuration. For example,  1106  may be performed by confirmation component  1244  of apparatus  1202 . The second wireless device may receive the confirmation from the first wireless device. In some aspects, the second wireless device may enable a duplex configuration to correspond with the duplex configuration of the first wireless device in response to receiving the confirmation from the first wireless device. 
     At  1108 , the second wireless device may enable a duplex configuration of the second wireless device. For example,  1108  may be performed by duplex component  1246  of apparatus  1202 . The second wireless device may enable the duplex configuration of the second wireless device that corresponds with the duplex configuration supported by the first wireless device. In some aspects, the duplex configuration supported by the first wireless device may comprise at least one of a full duplex configuration or a half duplex configuration. 
     At  1110 , the second wireless device may communicate with the first wireless device. 
     For example,  1110  may be performed by communication component  1248  of apparatus  1202 . The second wireless device may communicate with the first wireless device based on the duplex configuration. 
       FIG. 12  is a diagram  1200  illustrating an example of a hardware implementation for an apparatus  1202 . The apparatus  1202  is a UE and includes a cellular baseband processor  1204  (also referred to as a modem) coupled to a cellular RF transceiver  1222  and one or more subscriber identity modules (SIM) cards  1220 , an application processor  1206  coupled to a secure digital (SD) card  1208  and a screen  1210 , a Bluetooth module  1212 , a wireless local area network (WLAN) module  1214 , a Global Positioning System (GPS) module  1216 , and a power supply  1218 . The cellular baseband processor  1204  communicates through the cellular RF transceiver  1222  with the UE  104  and/or BS  102 / 180 . The cellular baseband processor  1204  may include a computer-readable medium/memory. The computer-readable medium/memory may be non-transitory. The cellular baseband processor  1204  is responsible for general processing, including the execution of software stored on the computer-readable medium/memory. The software, when executed by the cellular baseband processor  1204 , causes the cellular baseband processor  1204  to perform the various functions described supra. The computer-readable medium/memory may also be used for storing data that is manipulated by the cellular baseband processor  1204  when executing software. The cellular baseband processor  1204  further includes a reception component  1230 , a communication manager  1232 , and a transmission component  1234 . The communication manager  1232  includes the one or more illustrated components. The components within the communication manager  1232  may be stored in the computer-readable medium/memory and/or configured as hardware within the cellular baseband processor  1204 . The cellular baseband processor  1204  may be a component of the UE  350  and may include the memory  360  and/or at least one of the TX processor  368 , the RX processor  356 , and the controller/processor  359 . In one configuration, the apparatus  1202  may be a modem chip and include just the cellular baseband processor  1204 , and in another configuration, the apparatus  1202  may be the entire UE (e.g., see  350  of  FIG. 3 ) and include the aforediscussed additional modules of the apparatus  1202 . 
     The communication manager  1232  includes a capability component  1240  that is configured to receive an indication of a duplex capability of a first wireless device, e.g., as described in connection with  1102  of  FIG. 11 . The communication manager  1232  further includes a request component  1242  that is configured to transmit a request to operate in a duplex configuration supported by the first wireless device, e.g., as described in connection with  1104  of  FIG. 11 . The communication manager  1232  further includes a confirmation component  1244  that is configured to receive a confirmation to acknowledge the request to operate in the duplex configuration, e.g., as described in connection with  1106  of  FIG. 11 . The communication manager  1232  further includes a duplex component  1246  that is configured to enable a duplex configuration of the second wireless device, e.g., as described in connection with  1108  of  FIG. 11 . The communication manager  1232  further includes a communication component  1248  that is configured to communicate with the first wireless device, e.g., as described in connection with  1110  of  FIG. 11 . 
     The apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned flowchart of  FIG. 11 . As such, each block in the aforementioned flowchart of  FIG. 11  may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof. 
     In one configuration, the apparatus  1202 , and in particular the cellular baseband processor  1204 , includes means for receiving, from a first wireless device, a duplex capability of the first wireless device. The apparatus includes means for transmitting, to the first wireless device, a request to operate in a duplex configuration supported by the first wireless device. The apparatus includes means for enabling a duplex configuration of the second wireless device to correspond with the duplex configuration supported by the first wireless device. The apparatus includes means for communicating with the first wireless device based on the duplex configuration. The apparatus further includes means for receiving, from the first wireless device, a confirmation to acknowledge the request to operate in the duplex configuration. The aforementioned means may be one or more of the aforementioned components of the apparatus  1202  configured to perform the functions recited by the aforementioned means. As described supra, the apparatus  1202  may include the TX Processor  368 , the RX Processor  356 , and the controller/processor  359 . As such, in one configuration, the aforementioned means may be the TX Processor  368 , the RX Processor  356 , and the controller/processor  359  configured to perform the functions recited by the aforementioned means. 
     It is understood that the specific order or hierarchy of blocks in the processes/flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes/flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not meant to be limited to the specific order or hierarchy presented. 
     The following examples are illustrative only and may be combined with aspects of other embodiments or teachings described herein, without limitation. 
     Aspect 1 is a method of wireless communication at a first wireless device comprising detecting a second wireless device in a vicinity of the first wireless device; determining a duplex configuration of the second wireless device; enabling a duplex configuration of the first wireless device to correspond with the duplex configuration of the second wireless device; and communicating with the second wireless device based on the duplex configuration. 
     In Aspect 2, the method of Aspect 1 further includes reporting, to the second wireless device, a duplex capability of the first wireless device, wherein the duplex capability comprises a duplex configuration supported by the first wireless device. 
     In Aspect 3, the method of Aspect 1 or 2 further includes that the duplex configuration supported by the first wireless device comprises at least one of a full duplex configuration or a half duplex configuration. 
     In Aspect 4, the method of any of Aspects 1-3 further includes receiving, from the second wireless device, a request to operate in one of the duplex configuration supported by the first wireless device. 
     In Aspect 5, the method of any of Aspects 1-4 further includes that the second wireless device supports at least one of a full duplex configuration or a half duplex configuration, wherein the request includes at least one of the full duplex configuration or the half duplex configuration. 
     In Aspect 6, the method of any of Aspects 1-5 further includes that the first wireless device comprises one or more TRPs. 
     In Aspect 7, the method of any of Aspects 1-6 further includes that the first wireless device operates as a full duplex device, wherein a first TRP is a transmit panel and a second TRP is a receive panel. 
     In Aspect 8, the method of any of Aspects 1-7 further includes that the one or more TRPs share a common modem. 
     In Aspect 9, the method of any of Aspects 1-8 further includes that the first wireless device operates as two independent half duplex devices. 
     In Aspect 10, the method of any of Aspects 1-9 further includes that a first TRP and a second TRP of the one or more TRPs each have a corresponding modem and share an application processor 
     In Aspect 11, the method of any of Aspects 1-10 further includes that a first TRP and a second TRP of the one or more TRPs each have a corresponding modem and share a central modem, wherein the central modem provides resource availability for the individual modems associated to the first TRP and the second TRP. 
     In Aspect 12, the method of any of Aspects 1-11 further includes that the central modem receives allocation requests from modems associated to the first TRP and the second TRP, wherein the central modem provides the resource availability to a first modem associated with the first TRP and a second modem associated with the second TRP based on the allocation requests from the first TRP and the second TRP. 
     In Aspect 13, the method of any of Aspects 1-12 further includes that the first wireless device operates as a full duplex device, wherein the first TRP is a transmit panel of the full duplex device and the second TRP is a receive panel of the full duplex device. 
     In Aspect 14, the method of any of Aspects 1-13 further includes that the first wireless device determines that the second wireless device is a half duplex device or a full duplex device based on control signals received from the second wireless device. 
     Aspect 15 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of Aspects 1-14. 
     Aspect 16 is a system including one or more processor and memory in electronic communication with the one or more processors to cause the system or apparatus to implement a method as in any of Aspects 1-14. 
     Aspect 17 is a non-transitory computer readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of Aspects 1-14. 
     Aspect 18 is a method of wireless communication at a second wireless device comprising receiving, from a first wireless device, an indication of a duplex capability of the first wireless device; transmitting, to the first wireless device, a request to operate in a duplex configuration supported by the first wireless device; enabling a duplex configuration of the second wireless device to correspond with the duplex configuration supported by the first wireless device; and communicating with the first wireless device based on the duplex configuration. 
     In Aspect 19, the method of Aspect 18 further includes that the duplex capability of the first wireless device comprises the duplex configuration supported by the first wireless device. 
     In Aspect 20, the method of Aspect 18 or 19 further includes that the first wireless device supports at least one of a full duplex configuration or a half duplex configuration. 
     In Aspect 21, the method of any of Aspects 18-20 further includes that the second wireless device supports at least one of a full duplex configuration or a half duplex configuration, wherein the request includes at least one of the full duplex configuration or the half duplex configuration. 
     In Aspect 22, the method of any of Aspects 18-21 further includes receiving, from the first wireless device, a confirmation to acknowledge the request to operate in the duplex configuration. 
     In Aspect 23, the method of any of Aspects 18-22 further includes that the second wireless device enables the duplex configuration to correspond with the duplex configuration of the first wireless device in response to receiving the confirmation from the first wireless device. 
     Aspect 24 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of Aspects 18-23. 
     Aspect 25 is a system including one or more processor and memory in electronic communication with the one or more processors to cause the system or apparatus to implement a method as in any of Aspects 18-23. 
     Aspect 26 is a non-transitory computer readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of Aspects 18-23. 
     The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean “one and only one” unless specifically so stated, but rather “one or more.” The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module,” “mechanism,” “element,” “device,” and the like may not be a substitute for the word “means.” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for.”