Sidelink transmit power control command

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a source user equipment (UE) may send a first side link communication to a target UE. Based at least in part on sending the first side link communication to the target UE, the source UE may receive a transmit power control command for a second side link communication. The source UE may send the second side link communication using a transmit power determined at least in part based on the transmit power control command. A number of other aspects are also provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 884,622, filed on August 8, 2019, entitled “SIDELINK TRANSMIT POWER CONTROL COMMANDS,” and U.S. Non-Provisional Patent Application No. 16 / 947,572, filed on August 6, 2020, entitled “SIDELINK TRANSMIT POWER CONTROL COMMANDS,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for sidelink transmit power control commands. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). 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, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard released by the Third Generation Partnership Project (3GPP).

[0005] A wireless communication network may include multiple base stations (BS) that can support communications for multiple user equipment (UE). A user equipment (UE) may communicate with a base station (BS) via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a BS to a UE, while an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global level. New Radio (NR), which may also be referred to as 5G, is an enhancement set to the LTE mobile standard released by the Third Generation Partnership Project (3GPP). NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation, so as to better support mobile broadband Internet access. However, as the demand for mobile broadband access continues to grow, there is a need to further improve LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the invention

[0007] In some aspects, a method of wireless communication performed by a source user equipment (UE) may include: sending a first side link communication to a target UE; receiving a transmit power control command for a second side link communication based at least in part on sending the first side link communication to the target UE; and sending the second side link communication using a transmit power determined at least in part on the transmit power control command.

[0008] In some aspects, a method of wireless communication performed by a UE may include: receiving a first sidelink communication from a source UE; generating a transmit power control command based at least in part on the first sidelink communication; and sending the transmit power control command to control the sidelink transmit power of the source UE.

[0009] In some aspects, a method of wireless communication performed by a network entity may include determining a transmit power control command for a source UE for sidelink communication; and sending the transmit power control command to control a transmit power of the source UE for sidelink communication.

[0010] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: send a first side link communication to a target UE; receive a transmit power control command for a second side link communication based at least in part on sending the first side link communication to the target UE; and send the second side link communication using a transmit power determined at least in part based on the transmit power control command.

[0011] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: receive a first sidelink communication from a source UE; generate a transmit power control command based at least in part on the first sidelink communication; and send the transmit power control command to control the sidelink transmit power of the source UE.

[0012] In some aspects, a network entity for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: determine a transmit power control command for a source UE for sidelink communication; and send a transmit power control command to control the transmit power of the source UE for sidelink communication.

[0013] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When the one or more instructions are executed by one or more processors of a UE, the one or more processors may be configured to: send a first side link communication to a target UE; receive a transmit power control command for a second side link communication based at least in part on sending the first side link communication to the target UE; and send the second side link communication using a transmit power determined at least in part based on the transmit power control command.

[0014] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: receive a first sidelink communication from a source UE; generate a transmit power control command based at least in part on the first sidelink communication; and transmit the transmit power control command to control the sidelink transmit power of the source UE.

[0015] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a network entity, the one or more instructions may cause the one or more processors to: determine a transmit power control command for sidelink communication for a source UE; and send a transmit power control command to control the transmit power of the source UE for sidelink communication.

[0016] In some aspects, an apparatus for wireless communication may include: components for sending first side link communications to a target UE; components for receiving a transmit power control command for a second side link communication based at least in part on sending the first side link communication to the target UE; and components for sending the second side link communication using a transmit power determined at least in part based on the transmit power control command.

[0017] In some aspects, an apparatus for wireless communication may include: a component for receiving a first sidelink communication from a source UE; a component for generating a transmit power control command based at least in part on the first sidelink communication; and a component for sending the transmit power control command to control the sidelink transmit power of the source UE.

[0018] In some aspects, an apparatus for wireless communication may include: components for determining a transmit power control command for a source UE for sidelink communication; and components for sending the transmit power control command to control the transmit power of the source UE for sidelink communication.

[0019] These aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, wireless communication devices, and / or processing systems as substantially described herein with reference to and illustrated by the accompanying drawings and description.

[0020] The foregoing has summarized the features and technical advantages of the examples according to the present disclosure in a rather broad manner so that the subsequent detailed description can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily utilized as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein, both their organization and method of operation, and the associated advantages will be better understood from the following description. Each of the accompanying drawings is provided for the purpose of illustration and description and is not intended to be a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order that the above-mentioned features of the present disclosure may be understood in detail, a more specific description briefly summarized above may be obtained by reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and therefore should not be considered as limiting the scope thereof, as the description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0023] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0024] Figure 3 and Figure 4 is a diagram illustrating an example of sidelink transmit power control commands according to various aspects of the present disclosure.

[0025] Figure 5 is a schematic diagram illustrating an example process performed, for example, by a source user device according to various aspects of the present disclosure.

[0026] Figure 6 is a schematic diagram illustrating an example process performed, for example, by a user equipment according to various aspects of the present disclosure.

[0027] Figure 7 is a schematic diagram illustrating an example process, for example, performed by a network entity, according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0028] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which is practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0029] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the detailed description below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] It should be noted that although various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied to communication systems based on other generations, such as 5G and beyond, including NR technology.

[0031] Figure 11 is a schematic diagram showing a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a plurality of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a BS subsystem and / or a coverage area of ​​a BS that serves the coverage area, depending on the context in which the term is used.

[0032] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NR", and "cell" may be used interchangeably herein.

[0033] In some aspects, the cells may not necessarily be fixed, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network entities (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or similar interfaces using any suitable transport networks.

[0034] The wireless network 100 may also include a relay station. A relay station is an entity that can receive a data transmission from an upstream station (e.g., a BS or a UE) and send the data transmission to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions of other UEs. Figure 1 In the illustrated example, relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, or the like.

[0035] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a higher transmit power level (e.g., 5 to 40 watts), whereas a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0036] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0037] UEs 120 (e.g., 120a, 120b, 120c, 120d, 120e) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. UEs may also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, etc. UEs may be cellular phones (e.g., smart phones), personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, tablet computers, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices or equipment, biometric sensors / devices, wearable devices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), entertainment devices (e.g., music or video devices, or satellite radios), vehicle-mounted components or sensors, smart meters / sensors, industrial manufacturing equipment, global positioning system devices, or any other suitable device configured to communicate via wireless or wired media.

[0038] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may, for example, provide a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0039] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0040] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary for mutual communication) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh network, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0041] As mentioned above, Figure 1 is provided as an example. Other examples may be related to Figure 1 Different than described.

[0042] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0043] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, a synchronization signal with position coding may be generated to convey additional information.

[0044] At the UE 120, antennas 252a to 252r may receive downlink signals from the base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0045] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0046] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of the may perform one or more techniques associated with the sidelink transmit power control command, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of may execute or direct, for example, Figure 5 The process of 500 Figure 6 The process of 600 Figure 7 10 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120, the one or more instructions may perform or direct, for example, Figure 5 The process of 500 Figure 6 The process of 600 Figure 7 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0047] In some aspects, UE 120 may include components for sending a first sidelink communication to a target UE, components for receiving a transmit power control command for a second sidelink communication based at least in part on sending the first sidelink communication to the target UE, components for sending the second sidelink communication using a transmit power determined based at least in part on the transmit power control command, etc. In some aspects, UE 120 may include components for receiving the first sidelink communication from a source UE, components for generating a transmit power control command based at least in part on the first sidelink communication, components for sending the transmit power control command to control the sidelink transmit power of the source UE, etc. In some aspects, such components may include components for combining Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0048] In some aspects, a network entity (e.g., BS 110 such as a relay BS, or UE 120 such as a relay UE) may include components for determining a transmit power control command for a source UE for sidelink communication, components for sending a transmit power control command to control the transmit power of the source UE for sidelink communication, etc. In some aspects, such components may include a combination of Figure 2One or more components of the BS 110 described herein, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc. In some aspects, such components may include a combination of Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0049] As mentioned above, Figure 2 is provided as an example. Other examples may be related to Figure 2 Different than described.

[0050] In some communication systems, such as in LTE device-to-device (D2D), LTE V2X, NR V2X, etc., a first UE may communicate with a second UE using a side link. For example, a source UE may send a side link communication to a target UE on a side link. The source UE may determine a transmit power for transmission based at least in part on a static storage configuration. However, the static storage configuration may result in excessive transmit power, which may cause interference to another UE and may shorten the battery life of the UE. Additionally or alternatively, the static storage configuration may result in insufficient transmit power resulting in communication failure, which may result in connection loss, lower data rates, higher power consumption due to data retransmission, etc.

[0051] Using open-loop power control techniques, a source UE can measure the path loss of a received transmission (e.g., from another UE on a side link, from a BS on an access link, etc.) and adjust the transmit power based at least in part on the path loss. However, open-loop power control may be affected by path loss measurement errors, such as when the source UE or target UE is changing position or relative direction. As a result, open-loop power control may result in poor transmit power determination.

[0052] Some aspects described herein enable closed-loop transmit power control for sidelink communications. For example, a source UE may transmit a first sidelink communication, may receive a transmit power control command from another device (e.g., a target UE, a BS, etc.) based at least in part on the first sidelink communication, and may adjust the transmit power for a second sidelink communication based at least in part on the transmit power control command. In this way, the accuracy of transmit power control for sidelink communications is improved relative to open-loop power control techniques. In addition, based at least in part on improving the accuracy of transmit power control, the possibility of communication drops due to insufficient transmit power and the possibility of interfering communications due to excessive transmit power can be reduced.

[0053] Figure 3 is a diagram illustrating an example 300 of a sidelink transmit power control command according to various aspects of the present disclosure. Figure 3 As shown, example 300 may include a source UE 120 and another UE 120 (eg, a target UE 120 or a non-target UE 120), as described in greater detail herein.

[0054] like Figure 3 As further shown in FIG. 1 and indicated by reference numeral 305, the source UE 120 may send a first sidelink communication to another UE 120. For example, the source UE 120 may send the first sidelink communication to a target UE 120, which is the intended recipient of the first sidelink communication. In this case, the target UE 120 may perform sidelink reception quality measurements on the first sidelink communication, such as determining a reference signal received power (RSRP), a reference signal received quality (RSRQ), a reference signal received signal to interference and noise ratio (SINR), a hybrid automatic repeat request (HARQ) block error rate (BLER), an upper layer BLER, a BLER of a control channel transmission (such as a physical downlink control channel (PDCCH) or a physical sidelink control channel (PSCCH)), etc.

[0055] Additionally or alternatively, source UE 120 may send the first sidelink communication to a non-target UE 120 that is not an intended recipient of the first sidelink communication. For example, the first sidelink communication may interfere with communications of the non-target UE 120 based at least in part on source UE 120 being within a threshold proximity of the non-target UE 120. In this case, based at least in part on receiving the interfering first sidelink communication, the non-target UE 120 may perform interference measurements of the first sidelink communication.

[0056] In some aspects, the source UE 120 may transmit one or more channels related to the first sidelink communication. For example, the source UE 120 may transmit a PSCCH, a physical sidelink shared channel (PSSCH), a physical sidelink feedback channel (PSFCH), etc. as the first sidelink communication.

[0057] like Figure 3 As further shown in FIG. 1 and shown by reference numerals 310 and 315, other UE 120 may determine a transmit power control (TPC) command and provide the transmit power control command to source UE 120. For example, when other UE 120 is a target UE 120, other UE 120 may determine the transmit power control command based at least in part on the side link reception quality of the first side link communication. In this case, other UE 120 may determine the transmit power control command to ensure sufficient transmit power level to avoid communication interruption during subsequent transmissions. Additionally or alternatively, when other UE 120 is a non-target UE 120, other UE 120 may determine the transmit power control command based at least in part on the interference measurement of the first side link communication. In this case, other UE 120 may determine the transmit power control command to avoid interference during subsequent transmissions.

[0058] In some aspects, the other UE 120 may determine a transmit power control command for a particular channel. For example, the other UE 120 may determine a transmit power control command for a PSSCH, a PSCCH, a PSFCH, etc. In this case, when multiple channels are time-division multiplexed, the other UE 120 may determine a channel power offset to indicate a different transmit power for each of the multiple channels. Additionally or alternatively, when multiple channels are frequency-division multiplexed (e.g., a PSCCH multiplexed within a resource block of a PSSCH), the other UE 120 may determine a common transmit power control command for multiple channels. Additionally or alternatively, the other UE 120 may determine a common transmit power control command for some of the multiple channels and different transmit power control commands for one or more other channels of the multiple channels.

[0059] like Figure 3As further shown in FIG. 1 and shown by reference numerals 320 and 325, source UE 120 may change the transmit power and transmit a second side link communication. For example, based at least in part on receiving a transmit power control command from other UE 120, source UE 120 may increase or decrease the transmit power for subsequent side link communications. Additionally or alternatively, source UE 120 may maintain the transmit power at a current transmit power level based at least in part on receiving a transmit power control command. For example, source UE 120 may determine that the transmit power control command includes information indicating that the transmit power will not be changed. In some aspects, source UE 120 may change the transmit power of different channels of the second side link communication based at least in part on a plurality of received transmit power control commands. In this way, source UE 120 and other UE 120 enable closed-loop power control for side link communications.

[0060] As mentioned above, Figure 3 is provided as an example. Other examples may be related to Figure 3 Different than described.

[0061] Figure 4 4 is a diagram illustrating an example 400 of a sidelink transmit power control command according to various aspects of the present disclosure. Figure 4 As shown, example 400 may include a network entity 405 (eg, which may be a relay BS or a relay UE), a source UE 120, and another UE 120 (eg, which may be a target UE or a non-target UE), as described in greater detail herein.

[0062] like Figure 4 As further shown in FIG. 1 and indicated by reference numeral 410, a source UE 120 may send a first sidelink communication to another UE 120. For example, the source UE 120 may send the first sidelink communication to a target UE 120, which is an intended recipient of the first sidelink communication. In this case, the target UE 120 may perform a sidelink reception quality measurement, such as determining an RSRQ, on the first sidelink communication.

[0063] Additionally or alternatively, source UE 120 may send the first sidelink communication to a non-target UE 120 that is not an intended recipient of the first sidelink communication. For example, based at least in part on source UE 120 being within a threshold proximity of non-target UE 120, the first sidelink communication may interfere with communications of non-target UE 120. In this case, based at least in part on receiving the first sidelink communication, non-target UE 120 may perform interference measurements of the first sidelink communication. Additionally or alternatively, based at least in part on network entity 405 being within a threshold proximity of source UE 120, network entity 405 may perform measurements of the first sidelink communication, such as interference measurements of the first sidelink communication.

[0064] like Figure 4 As further shown in FIG. 4 and indicated by reference numeral 415, the other UE 120 may provide transmit power control information to the network entity 405 for relaying to the source UE 120. For example, the other UE 120 may provide information identifying a transmit power control command determined by the other UE 120, as described in greater detail herein. Additionally or alternatively, the other UE 120 may provide information identifying measurements performed by the other UE 120, such as reception quality measurements, interference measurements, etc., to the network entity 405 to enable the network entity 405 to determine the transmit power control command.

[0065] In some aspects, the other UE 120 may provide transmit power control information to the network entity 405 based at least in part on not having direct sidelink transmission resources to transmit to the source UE 120. For example, when no resources are allocated for transmitting to the source UE 120, the other UE 120 may provide the transmit power control information to the network entity 405 for relaying to the source UE 120. Additionally or alternatively, when the other UE 120 does not have sufficient transmit power to transmit to the source UE 120, the other UE 120 may send the transmit power control information to the network entity 405 for relaying to the source UE 120.

[0066] In some aspects, the other UEs 120 may not identify the source UE 120 when providing the transmit power control information. For example, the other UEs 120 may provide the transmit power control information to the network entity 405, and the network entity 405 may determine which side link the transmit power control information is about. In this case, the network entity 405 may identify the source UE 120 based at least in part on scheduling information, location information, etc.

[0067] like Figure 4As further shown in FIG. 1 and indicated by reference numerals 420 and 425, the network entity 405 may determine a transmit power control command and may provide the transmit power control command to the source UE 120. For example, based at least in part on receiving the transmit power control command, the network entity 405 may determine to relay the transmit power control command to the source UE 120. Additionally or alternatively, based at least in part on receiving information identifying the measurement, the network entity 405 may generate the transmit power control command. In this case, the network entity 405 may generate the transmit power control command to ensure a transmit power level to avoid communication interruption during subsequent transmissions and / or to avoid interference during subsequent transmissions.

[0068] Additionally or alternatively, the network entity 405 may generate a transmit power control command based at least in part on measurements performed by the network entity 405. For example, the network entity 405 may determine a change to the transmit power of the source UE 120 based at least in part on measurements performed for the first sidelink communication. In some aspects, the network entity 405 may use multiple factors to determine the transmit power control command. For example, the network entity 405 may combine an interference measurement performed by the first UE 120, a channel quality measurement performed by the second UE 120, and another measurement (e.g., an interference measurement) performed by the network entity 405 to generate a transmit power control command. Similarly, the network entity 405 may combine one or more received transmit power control commands, one or more received measurements, one or more performed measurements, etc. to generate a single transmit power control command (or multiple transmit power control commands for multiple channels) to provide to the source UE 120. In some aspects, the network entity 405 may provide the transmit power control command directly to the source UE 120, provide it to the source UE 120 via another network entity (e.g., another BS or another UE), etc.

[0069] like Figure 4 As further shown in FIG. 4 and indicated by reference numerals 430 and 435, source UE 120 may change transmit power and transmit a second side link communication. For example, based at least in part on receiving a transmit power control command from network entity 405, source UE 120 may change the transmit power for subsequent side link communications. In some aspects, source UE 120 may receive multiple transmit power control commands. For example, source UE 120 may receive transmit power control commands from network entity 405, from UE 120 (e.g., target UE, non-target UE, etc.), and may aggregate these transmit power control commands to determine subsequent transmit power. In this way, source UE 120 and other UEs 120 enable closed-loop power control for side link communications.

[0070] As mentioned above, Figure 4 is provided as an example. Other examples may be related to Figure 4 Different than described.

[0071] Figure 5 5 is a diagram illustrating an example process 500, performed, for example, by a UE, according to various aspects of the present disclosure. Example process 500 is an example in which a source UE (eg, UE 120, etc.) performs operations associated with sidelink transmit power control commands.

[0072] like Figure 5 As shown, in some aspects, process 500 may include sending a first sidelink communication to a target UE (block 510). For example, a source UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may send a first sidelink communication to a target UE, as described above.

[0073] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include receiving a transmit power control command for a second sidelink communication based at least in part on sending the first sidelink communication to the target UE (block 520). For example, the source UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may receive a transmit power control command for the second sidelink communication based at least in part on sending the first sidelink communication to the target UE, as described above.

[0074] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include transmitting a second side link communication using a transmit power determined based at least in part on the transmit power control command (block 530). For example, the source UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may transmit the second side link communication using a transmit power determined based at least in part on the transmit power control command, as described above.

[0075] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0076] In a first aspect, a transmit power control command is received directly from a target UE.

[0077] In a second aspect, alone or in combination with the first aspect, a transmit power control command is received from a target UE via a relay base station.

[0078] In a third aspect, alone or in combination with one or more of the first and second aspects, a transmit power control command is received directly from another UE that is not the target UE.

[0079] In a fourth aspect, alone or in combination with one or more of the first to third aspects, a transmit power control command is received from another UE that is not a target UE via a relay base station.

[0080] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the transmit power control command is based at least in part on a sidelink reception quality of the first sidelink communication.

[0081] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the transmit power control command is based at least in part on interference measurements of the first sidelink communication.

[0082] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, the transmit power control command is generated by the base station at least partially based on one or more other transmit power control commands, and the one or more other transmit power control commands are generated by one or more UEs at least partially based on the first side link communication.

[0083] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, a transmit power control command is received from a relay network entity.

[0084] Although Figure 5 Example blocks of process 500 are shown, but in some aspects process 500 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 5 Additionally or alternatively, two or more of the blocks of process 500 may be performed in parallel.

[0085] Figure 6 6 is a diagram illustrating an example process 600, performed, for example, by a user equipment, according to various aspects of the present disclosure. Example process 600 is an example of operations in which a UE (eg, UE 120, etc.) performs operations associated with sidelink transmit power control commands.

[0086] like Figure 6 As shown, in some aspects, process 600 may include receiving a first sidelink communication from a source UE (block 610). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may receive the first sidelink communication from the source UE, as described above.

[0087] like Figure 6As further shown in FIG. 6 , in some aspects, process 600 may include generating a transmit power control command based at least in part on the first sidelink communication (block 620). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may generate a transmit power control command based at least in part on the first sidelink communication, as described above.

[0088] like Figure 6 As further shown in FIG. 6 , in some aspects, process 600 may include sending a transmit power control command to control the sidelink transmit power of the source UE (block 630). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may send a transmit power control command to control the sidelink transmit power of the source UE, as described above.

[0089] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0090] In a first aspect, the transmit power control command is sent directly to the source UE.

[0091] In a second aspect, alone or in combination with the first aspect, a transmit power control command is sent to a base station for relaying to a source UE.

[0092] In a third aspect, alone or in combination with one or more of the first and second aspects, a transmit power control command is generated based at least in part on a sidelink reception quality of the first sidelink communication.

[0093] In a fourth aspect, alone or in combination with one or more of the first to third aspects, a transmit power control command is generated based at least in part on interference measurements of the first sidelink communication.

[0094] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a transmit power control command is sent to a network entity for relaying to a source UE.

[0095] Although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 6 Additionally or alternatively, two or more of the blocks of process 600 may be performed in parallel.

[0096] Figure 77 is a diagram illustrating an example process 700 performed, for example, by a network entity, according to various aspects of the present disclosure. Example process 700 is an example in which a network entity (eg, BS 110, UE 120, network entity 405, etc.) performs operations associated with sidelink transmit power control commands.

[0097] like Figure 7 As shown, in some aspects, process 700 may include determining a transmit power control command for sidelink communication for a source UE (block 710). For example, a network entity (e.g., using controller / processor 240, controller / processor 280, etc.) may determine a transmit power control command for sidelink communication for a source UE, as described above.

[0098] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include sending a transmit power control command to control the transmit power of the source UE for sidelink communications (block 720). For example, a network entity (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may send a transmit power control command to control the transmit power of the source UE for sidelink communications, as described above.

[0099] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0100] In a first aspect, the network entity is a base station or a relay UE.

[0101] In a second aspect, alone or in combination with the first aspect, a transmit power control command is received from a target UE for relaying to a source UE.

[0102] In a third aspect, alone or in combination with one or more of the first and second aspects, a transmit power control command is received from another UE that is not a target UE for relaying to a source UE.

[0103] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the transmit power control command is based at least in part on a sidelink reception quality of another sidelink communication of the source UE.

[0104] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the transmit power control command is based at least in part on interference measurement of another sidelink communication of the source UE.

[0105] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, a transmit power control command is generated by a network entity based at least in part on one or more other transmit power control commands, and one or more other transmit power control commands are received from one or more other UEs based at least in part on another side link communication of the source UE.

[0106] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, a transmit power control command is sent to a network entity for relaying to a source UE.

[0107] Although Figure 7 Example blocks of process 700 are shown, but in some aspects process 700 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 7 Additionally or alternatively, two or more of the blocks of process 700 may be performed in parallel.

[0108] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of these aspects.

[0109] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0110] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0111] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software codes. It should be understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0112] Although the specific combination of features is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not particularly recorded in the claims and / or disclosed in the specification. Although each of the listed dependent claims can be directly subordinate to only one claim, the disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. The phrase "at least one" referring to the list of items refers to any combination of these items, including a single member. As an example, "at least one of a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, ccc, or any other order of a, b and c).

[0113] Unless explicitly described, any element, action or instruction used herein should not be interpreted as critical or essential. In addition, as used herein, the articles "one" and "an" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.), and can be used interchangeably with "one or more". In the case of only one item, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "contain", etc. are intended to be open terms. In addition, unless otherwise explicitly stated, the phrase "based on" is intended to mean "based at least in part on".

Claims

1. A method of wireless communication performed by a source user equipment (UE), comprising: Sending a first sidelink communication to a target UE and another UE via a sidelink channel, wherein the first sidelink communication is sent to the another UE based on a distance between the source UE and the another UE satisfying a distance threshold; receiving a plurality of transmit power control commands for a second sidelink communication based at least in part on transmitting the first sidelink communication to the target UE and the other UE, wherein the first sidelink communication comprises a plurality of time division multiplexed channels, and wherein a transmit power control command in the plurality of transmit power control commands is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; as well as The second sidelink communication is transmitted via the sidelink channel and to the target UE using a transmit power determined based at least in part on aggregating the plurality of transmit power control commands.

2. The method according to claim 1, wherein: A transmit power control command of the plurality of transmit power control commands is received from a relay network entity, and wherein the transmit power control command is not received via the sidelink channel.

3. The method according to claim 2, wherein: The relay network entity includes a relay base station.

4. The method according to claim 1, wherein: A transmit power control command of the plurality of transmit power control commands is based at least in part on a sidelink reception quality of the first sidelink communication.

5. The method according to claim 1, wherein: A transmit power control command of the plurality of transmit power control commands is based at least in part on an interference measurement of the first sidelink communication.

6. The method according to claim 1, wherein: A transmit power control command among the multiple transmit power control commands is received from a relay network entity, and wherein the transmit power control command is generated by the relay network entity at least in part based on one or more other transmit power control commands, and the one or more other transmit power control commands are generated by one or more UEs at least in part based on the first side link communication.

7. The method according to claim 6, wherein: The relay network entity is a base station or a relay UE.

8. The method according to claim 1, wherein: The other UE comprises a relay network entity, wherein the sidelink channel is located between the source UE and the target UE, and wherein the source UE, the target UE and the relay network entity enable closed-loop power control for sidelink communication via the sidelink channel.

9. The method according to claim 1, wherein: A transmit power control command among the multiple transmit power control commands is received from a relay network entity based at least in part on: resources of the other UE are not allocated for transmission to the source UE, or the other UE does not have sufficient transmit power to send the transmit power control command to the source UE.

10. A method of wireless communication performed by a user equipment (UE), comprising: receiving a first sidelink communication from a source UE via a sidelink channel, wherein the UE receives the first sidelink communication based at least in part on a distance between the UE and the source UE satisfying a distance threshold, wherein the first sidelink communication comprises a plurality of time division multiplexed channels; generating transmit power control information based at least in part on the first sidelink communication, wherein the transmit power control information is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; as well as The transmit power control information is sent to a relay network entity so that the relay network entity sends a transmit power control command to the source UE, wherein the source UE sends a second sidelink communication using a transmit power determined at least in part based on aggregating the transmit power control command and one or more other transmit power control commands.

11. The method according to claim 10, wherein: The relay network entity is a base station configured to relay the transmit power control command to the source UE based at least in part on the transmit power control information.

12. The method according to claim 10, wherein: The transmit power control information is generated based at least in part on a sidelink reception quality of the first sidelink communication.

13. The method according to claim 10, wherein: The transmit power control information is generated based at least in part on interference measurements of the first sidelink communication.

14. The method according to claim 10, wherein: The transmit power control information is sent to the relay network entity so that the relay network entity sends the transmit power control command to the source UE.

15. The method according to claim 10, wherein: The transmit power control information identifies that the transmit power control information is associated with the UE based on at least one of scheduling information associated with the UE or location information associated with the UE.

16. The method according to claim 10, wherein: Based at least in part on the fact that resources of the UE are not allocated for transmission to the source UE, the transmit power control information is sent to a relay network entity.

17. The method according to claim 10, wherein: The transmit power control command is sent to the relay network entity based on the UE not having sufficient transmit power to send the transmit power control command to the source UE.

18. A method of wireless communication performed by a network entity, comprising: receiving, from a user equipment (UE), transmit power control information associated with a sidelink channel between a source UE and a target UE, wherein the transmit power control information is based on a first sidelink communication comprising a plurality of time division multiplexed channels, and wherein the transmit power control information is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; determining a transmit power control command for a second sidelink communication from the source UE based at least in part on the transmit power control information; as well as The transmit power control command is sent to the source UE, wherein the source UE sends subsequent sidelink communications using a transmit power determined based at least in part on aggregating the transmit power control command and one or more additional transmit power control commands.

19. The method according to claim 18, wherein: The network entity is a base station or a relay UE.

20. The method according to claim 18, wherein: The transmit power control information identifies another transmit power control command received from the UE for relaying to the source UE.

21. The method according to claim 18, wherein: The transmit power control information identifies another transmit power control command, and wherein the UE is not the target UE.

22. The method according to claim 18, wherein: The transmit power control command is determined based at least in part on a sidelink reception quality of another sidelink communication of the source UE.

23. The method according to claim 18, wherein: The transmit power control command is determined based at least in part on an interference measurement of another sidelink communication of the source UE.

24. The method of claim 18, wherein: The transmit power control command is generated by the network entity based at least in part on one or more other transmit power control commands received from one or more other UEs based at least in part on another sidelink communication of the source UE.

25. The method of claim 18, wherein: The transmit power control command is sent to another network entity for relaying to the source UE.

26. A source user equipment (UE) for wireless communication, comprising: Memory; and One or more processors, coupled to the memory, the one or more processors configured to: Sending a first sidelink communication to a target UE and another UE via a sidelink channel, wherein the first sidelink communication is sent to the another UE based on a distance between the source UE and the another UE satisfying a distance threshold; receiving a plurality of transmit power control commands for a second sidelink communication based at least in part on transmitting the first sidelink communication to the other UE, wherein the first sidelink communication comprises a plurality of time division multiplexed channels, and wherein a transmit power control command in the plurality of transmit power control commands is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; as well as The second sidelink communication is transmitted via the sidelink channel and to the target UE using a transmit power determined based at least in part on aggregating the plurality of transmit power control commands.

27. The source UE according to claim 26, wherein: The transmit power control command of the plurality of transmit power control commands is directly received from the another UE.

28. The source UE according to claim 26, wherein: The transmit power control command among the plurality of transmit power control commands is received via the relay base station.

29. The source UE according to claim 26, wherein: A transmit power control command of the plurality of transmit power control commands is based at least in part on a sidelink reception quality of the first sidelink communication.

30. The source UE according to claim 26, wherein: A transmit power control command of the plurality of transmit power control commands is based at least in part on an interference measurement of the first sidelink communication.

31. A user equipment (UE) for wireless communication, comprising: Memory; and One or more processors, coupled to the memory, the one or more processors configured to: receiving a first sidelink communication from a source UE via a sidelink channel, wherein the UE receives the first sidelink communication based at least in part on a distance between the UE and the source UE satisfying a distance threshold, wherein the first sidelink communication comprises a plurality of time division multiplexed channels; generating transmit power control information based at least in part on the first sidelink communication, wherein The transmit power control information is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; as well as The transmit power control information is sent to a relay network entity so that the relay network entity sends a transmit power control command to the source UE, wherein the source UE sends a second sidelink communication using a transmit power determined at least in part based on aggregating the transmit power control command and one or more other transmit power control commands.

32. A network entity for wireless communication, comprising: Memory; and One or more processors, coupled to the memory, the one or more processors configured to: receiving, from a user equipment (UE), transmit power control information associated with a sidelink channel between a source UE and a target UE, wherein the transmit power control information is based on a first sidelink communication comprising a plurality of time division multiplexed channels, and wherein the transmit power control information is based at least in part on a channel power offset to indicate a different transmit power for each of the plurality of time division multiplexed channels; determining a transmit power control command for a second sidelink communication from the source UE based at least in part on the transmit power control information; as well as The transmit power control command is sent to the source UE, wherein the source UE sends subsequent sidelink communications using a transmit power determined based at least in part on aggregating the transmit power control command and one or more additional transmit power control commands.

33. A non-transitory computer readable medium having instructions stored thereon, wherein the instructions, when executable by one or more processors, cause the one or more processors to perform the method of any one of claims 1-25.

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