Patent Description:
<CIT> describes the determination of a signal structure in a wireless system. <CIT> describes a power control method and apparatus for p2p communication. <CIT> describes a method and arrangement for d2d communication. <CIT> describes a method and system for radio link establishment and maintenance with p2p communication in wireless communication. <CIT> describes a method for transmitting and receiving control information and apparatus for same. <CIT> describes a closed-loop transmission power control method and radio base station device. <CIT> describes techniques and apparatuses for multi-link transmit power control.

Embodiments of the invention are set out in the dependent claims.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification.

UEs <NUM> (e.g., 120a, 120b, 120c, 120d, 120e) may be dispersed throughout wireless network <NUM>, and each UE may be stationary or mobile.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with sidelink transmit power control command generation, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station <NUM> and/or the UE <NUM>, may perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein.

In some aspects, UE <NUM> may include means for receiving, from a source UE, a first sidelink communication, means for generating a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with the first sidelink communication, means for transmitting, to control a transmit power for a second sidelink communication, the transmit power control command to the source UE, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

In some aspects, a network entity (e.g., a BS <NUM>, such as a relay BS, a UE <NUM>, such as a relay UE, and/or the like) may include means for determining a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with a first sidelink communication, means for transmitting, to control a transmit power for a second sidelink communication, the transmit power control command to a source UE, and/or the like. In some aspects, such means may include one or more components of BS <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

In some communications systems, such as in LTE device to device (D2D), LTE V2X, NR V2X, and/or the like, a first UE may communicate with a second UE using a sidelink. For example, a source UE may transmit a sidelink communication to a target UE on the sidelink. The source UE may be a UE for which a power control procedure is to be performed and the target UE may be a UE that is an intended recipient of a transmission from the source UE for which the transmit power is controlled. The source UE may determine a transmit power for the transmission based at least in part on a static stored configuration. However, the static stored configuration may result in excess transmit power that may cause interference with another UE and may reduce a UE battery life. Additionally, or alternatively, the static stored configuration may result in a transmit power that results in insufficient transmit power that causes a communication failure, which could result in a loss of connectivity, a lower data rate, a higher power consumption due to data retransmissions, and/or the like.

Using an open-loop power control technique, the source UE may measure a pathloss of a received transmission (e.g., from another UE on a sidelink, from a BS on an access link, and/or the like) and adjust a transmit power based at least in part on the pathloss. However, open-loop power control may be subject to pathloss measurement errors, such as when the source UE or a target UE is changing location or relative orientation. As a result, open-loop power control may result in poor transmit power determination.

Some aspects described herein provide for generating a transmit power control command to enable closed-loop transmit power control for sidelink communications. For example, a target UE, a non-target UE, a network entity, and/or the like may generate a transmit power control command based at least in part on a signal to interference noise ratio (SINR) measurement of a first sidelink communication of a source UE. In this way, an accuracy of transmit power control is improved for sidelink communication, relative to open-loop power control techniques. Moreover, based at least in part on improving the accuracy of transmit power control, a likelihood of dropped communications due to insufficient transmit power and a likelihood of interfering communications due to excessive transmit power may be reduced.

<FIG> is a diagram illustrating an example <NUM> of sidelink transmit power control command generation, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include a source UE <NUM> and another UE <NUM> (e.g., a target UE <NUM> or a non-target UE <NUM>), as described in more detail herein.

As further shown in <FIG>, and by reference number <NUM>, source UE <NUM> may transmit a first sidelink communication to the other UE <NUM>. For example, source UE <NUM> may transmit the first sidelink communication to a target UE <NUM>, which is an intended recipient of the first sidelink communication. In this case, the target UE <NUM> may perform a sidelink reception quality measurement on the first sidelink communication, such as determining a reference signal received quality (RSRQ), an SINR, and/or the like.

Additionally, or alternatively, source UE <NUM> may transmit the first sidelink communication to a non-target UE <NUM>, which is not an intended recipient of the first sidelink communication. For example, based at least in part on source UE <NUM> being within a threshold proximity of non-target UE <NUM>, the first sidelink communication may interfere with communications of the non-target UE <NUM>. In this case, based at least in part on receiving the interfering first sidelink communication, the non-target UE <NUM> may perform an interference measurement of the first sidelink communication.

As further shown in <FIG>, and by reference numbers <NUM> and <NUM>, the other UE <NUM> may perform a measurement of the first sidelink communication, generate a transmit power control (TPC) command, and provide the transmit power control command to source UE <NUM>. For example, when the other UE <NUM> is a target UE <NUM>, the other UE <NUM> may determine the transmit power control command based at least in part on a sidelink reception quality determination for the first sidelink communication. In this case, the other UE <NUM> may determine the transmit power control command to ensure an adequate level of transmit power to avoid a dropped communication during a subsequent transmission. Additionally, or alternatively, when the other UE <NUM> is a non-target UE <NUM>, the other UE <NUM> may determine the transmit power control command based at least in part on an interference measurement of the first sidelink communication. In this case, the other UE <NUM> may determine the transmit power control command to avoid interference during a subsequent transmission.

In some aspects, the other UE <NUM> may determine an SINR and generate the transmit power control command based at least in part on the SINR. For example, the other UE <NUM> may compare a measured SINR to a target SINR for the sidelink, and may determine to alter a transmit power to cause the sidelink to achieve the target SINR. In this case, the other UE <NUM> may determine to increase a transmit power, decrease a transmit power, and/or the like to alter the SINR for the sidelink.

In some aspects, the other UE <NUM> may measure a particular channel to determine the SINR. For example, the other UE <NUM> may measure a demodulation reference signal (DMRS) included in a physical sidelink control channel (PSCCH) or physical sidelink shared channel (PSSCH) transmitted in connection with the first sidelink communication. In this case, the DMRS and data symbols of the first sidelink communication may be associated with a power offset relating to a modulation and coding scheme (MCS) or a format of the DMRS and/or the data symbols. In other words, as a result of a first transmit power being used for the DMRS and a second transmit power being used for the data symbols, with both these transmit powers varying as a function of MCS used, the other UE <NUM> may offset a power determination associated with a measurement of the DMRS when generating a transmit power control command for application to data symbols of a subsequent second sidelink communication (e.g., which may use a different MCS that may not be known to a receiver in advance).

In some aspects, the other UE <NUM> may measure a channel state information reference signal (CSI-RS) or a sounding reference signal (SRS) that is transmitted with the first sidelink communication. In this case, in contrast to using a DMRS, the other UE <NUM> may determine the transmit power based at least in part on measurements of the CSI-RS or SRS without including an offset relating to differences between the CSI-RS or SRS and the data symbols of a subsequent second sidelink communication. In some aspects, the other UE <NUM> may select which reference signal to use based at least in part on a power control configuration of source UE <NUM>. For example, when source UE <NUM> applies independent power control to sidelink communications and to CSI-RSs or SRSs, the other UE <NUM> may determine to use a DMRS-based measurement to generate a transmit power control command rather than a CSI-RS measurement or an SRS measurement.

In some aspects, the other UE <NUM> may receive a reference signal (e.g., a CSI-RS or SRS) for power control of the first sidelink communication based at least in part on receiving a sidelink control information (SCI) from source UE <NUM>. In some aspects, the other UE <NUM> may determine a delay time between receiving a message triggering receipt of a reference signal (e.g., an SCI) and receiving the reference signal based at least in part on another channel delay time. For example, when the reference signal is transmitted in connection with a shared channel payload (e.g., a DMRS), source UE <NUM> may use a delay time value for a delay between a PSCCH and a PSSCH as the delay time between receiving an SCI triggering receipt of the DMRS and receiving the DMRS. In this way, the delay time value may enable a threshold amount of time for processing a received signal to generate a transmit power control command.

In some aspects, the other UE <NUM> may be configured with a minimum delay time based at least in part on a capability of the other UE <NUM>. For example, based at least in part on a processing capability, the other UE <NUM> may configure a minimum time between receiving a message triggering receipt of a reference signal for sidelink power control and receiving the reference signal, to reduce a likelihood that the reference signal is dropped. Similarly, in some aspects, the other UE <NUM> may track a minimum delay time between receiving the reference signal and subsequently transmitting the transmit power control command to source UE <NUM>. In this case, the other UE <NUM> ensures that source UE <NUM> does not attempt to receive the transmit power control command until a resource after a period of time for the other UE <NUM> to generate the transmit power control command.

In some aspects, the other UE <NUM> may combine a plurality of transmit power control commands based at least in part on the minimum delay time. For example, the other UE <NUM> may not have an allocated resource reserved for transmitting a first transmit power control command in a time between generating the first transmit power control command and receiving another reference signal. In this case, the other UE <NUM> may combine the first transmit power control command with a second transmit power control command generated based at least in part on the other reference signal. In some aspects, the other UE <NUM> may perform a particular procedure to combine a plurality of transmit power control commands. For example, the other UE <NUM> may average or combine a plurality of transmit power control commands, select a latest generated transmit power control command of a plurality of transmit power control command, and/or the like.

In some aspects, the other UE <NUM> may transmit the transmit power control command at a sequentially first opportunity after a minimum delay time. In this way, the other UE <NUM> ensures that source UE <NUM> can determine which sidelink transmission triggered the transmit power control command. In some aspects, a transmission opportunity for transmitting the power control command may be channel specific. For example, the other UE <NUM> may use a first transmission opportunity for transmitting a transmit power control command for controlling a PSSCH and a second transmission opportunity for transmitting a transmit power command for controlling a PSCCH. In this way, the other UE <NUM> enables source UE <NUM> to determine which channel is to be controlled by a transmit power control command.

In some aspects, the other UE <NUM> may measure another beam (e.g., a different beam from a beam of the first sidelink communication) to determine a sidelink SINR and generate the transmit power control command. For example, the other UE <NUM> may identify another beam that is quasi-co-located with a beam conveying the first sidelink communication, and may measure the other beam. In some aspects, the other UE <NUM> may perform a plurality of measurements of a plurality of channels. For example, when source UE <NUM> transmits a PSSCH, a PSCCH, and/or a physical sidelink feedback channel (PSFCH) using different beams (e.g., to enable different recipients for the different channels, such as a groupcast set of recipients for the PSCCH and a single unicast recipient for the PSSCH), the other UE <NUM> may perform separate measurements of the different beams, and may generate a plurality of transmit power control commands.

In some aspects, the other UE <NUM> may configure a frequency of measurements based at least in part on a quantity of measurements that are to be performed. For example, when measuring an SINR of a single channel and generating a single transmit power control command, the other UE <NUM> may perform measurements relatively frequently. In contrast, when measuring a plurality of SINRs of a plurality of channels, the other UE <NUM> may perform measurements relatively infrequently. In this way, the other UE <NUM> compensates for increased processing complexity and reference signal overhead associated with measuring the plurality of SINRs. Further, the other UE <NUM> may use the infrequently measured SINRs of the individual channels to estimate the differences in SINRs between individual channels, and then use estimated channel differences to predict individual channel SINRs more frequently, based at least in part on the more frequent measurements of a single one of the individual channels.

In some aspects, the other UE <NUM> may measure a channel state information interference measurement (CSI-IM). For example, when the other UE <NUM> is a non-target UE <NUM>, the other UE <NUM> may measure vacant resource elements to determine a transmit power, and may detect the first sidelink communication when measuring the vacant resource elements. In some aspects, the other UE <NUM> may monitor a resource that includes the first sidelink communication and/or another resource used by source UE <NUM> (e.g., a CSI-RS resource, an SRS resource, and/or the like) for power control (e.g., despite not being an intended recipient of the first sidelink communication or any other communication from source UE <NUM>). In this case, the other UE <NUM> may generate a transmit power control command based at least in part on a measurement performed on a monitored resource or channel satisfying a measurement threshold. For example, based at least in part on a CSI-IM measurement satisfying a measurement threshold indicating a threshold likelihood of interference, the other UE <NUM> may generate a transmit power control command for source UE <NUM>.

In some aspects, the measurement threshold may be dynamically configured. For example, the other UE <NUM> may determine a value for the measurement threshold based at least in part on whether communication activity is expected on other victim links that are within a proximity of source UE <NUM> (e.g., links that can be interfered by a subsequent second sidelink communication). Additionally, or alternatively, the other UE <NUM> may determine the value for the measurement threshold based at least in part on an MCS expected on the other victim links, a beam configuration of the other victim links relative to a beam configuration of the sidelink for the subsequent second sidelink communication, and/or the like.

As further shown in <FIG>, and by reference numbers <NUM> and <NUM>, source UE <NUM> may alter a transmit power and transmit a second sidelink communication. For example, based at least in part on receiving the transmit power control command from the other UE <NUM>, source UE <NUM> may increase or decrease a transmit power for subsequent sidelink communications. Additionally, or alternatively, source UE <NUM> may maintain the transmit power at a current transmit power level based at least in part on receiving the transmit power control command. For example, source UE <NUM> may determine that the transmit power control command includes information indicating that a transmit power is not to be altered. In some aspects, source UE <NUM> may alter transmit powers of different channels of the second sidelink communication based at least in part on a plurality of received transmit power control commands. In this way, source UE <NUM> and the other UE <NUM> enable closed-loop power control for sidelink communications.

<FIG> is a diagram illustrating an example <NUM> of sidelink transmit power control command generation, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include a network entity <NUM> (e.g., which may be a relay BS or a relay UE), a source UE <NUM>, and another UE <NUM> (e.g., which may be a target UE or a non-target UE), as described in more detail herein.

As further shown in <FIG>, and by reference number <NUM>, source UE <NUM> may transmit a first sidelink communication to the other UE <NUM>. For example, source UE <NUM> may transmit the first sidelink communication to a target UE <NUM>, which is an intended recipient of the first sidelink communication. In this case, the target UE <NUM> may perform a sidelink reception quality measurement on the first sidelink communication, such as determining an RSRQ, an SINR, and/or the like.

Additionally, or alternatively, source UE <NUM> may transmit the first sidelink communication to a non-target UE <NUM>, which is not an intended recipient of the first sidelink communication. For example, based at least in part on source UE <NUM> being within a threshold proximity of non-target UE <NUM>, the first sidelink communication may interfere with communications of non-target UE <NUM>. In this case, based at least in part on receiving the first sidelink communication, non-target UE <NUM> may perform an interference measurement of the first sidelink communication. Additionally, or alternatively, based at least in part on network entity <NUM> being within the threshold proximity of source UE <NUM>, network entity <NUM> may perform a measurement of the first sidelink communication, such as an interference measurement of the first sidelink communication.

As further shown in <FIG>, and by reference number <NUM>, the other UE <NUM> may provide transmit power control information to network entity <NUM> for relay to source UE <NUM>. For example, the other UE <NUM> may provide information identifying a transmit power control command determined by the other UE <NUM>, as described in more detail herein. Additionally, or alternatively, the other UE <NUM> may provide, to network entity <NUM>, information identifying a measurement performed by the other UE <NUM>, such as an SINR measurement, reception quality measurement, an interference measurement, and/or the like, to enable network entity <NUM> to determine a transmit power control command.

As further shown in <FIG>, and by reference numbers <NUM> and <NUM>, network entity <NUM> may generate a transmit power control command and may provide the transmit power control command to source UE <NUM>. For example, based at least in part on receiving a transmit power control command, network entity <NUM> may determine to relay the transmit power control command to source UE <NUM>. Additionally, or alternatively, based at least in part on receiving information identifying a measurement, network entity <NUM> may generate a transmit power control command.

Additionally, or alternatively, network entity <NUM> may generate the transmit power control command based at least in part on a measurement performed by network entity <NUM>. For example, network entity <NUM> may determine an alteration to a transmit power of source UE <NUM> based at least in part on performing an SINR measurement of the first sidelink communication.

In some aspects, network entity <NUM> may consolidate a plurality of transmit power control commands to generate the transmit power control command. For example, when transmit power control commands are relayed across a plurality of hops of a multi-hop network, network entity <NUM> may consolidate a plurality of received transmit power control commands, a plurality of generated transmit power control commands, a combination of received and generated transmit power control commands, and/or the like into a single transmit power control command to reduce overhead signaling of a sidelink network. In this case, a minimum time delay may be defined between receiving a transmit power control command and relaying the transmit power control command and/or including the transmit power control command in a consolidation of transmit power control commands. For example, based at least in part on a capability of network entity <NUM>, network entity <NUM> may determine that transmit power control commands received within a threshold period of time of a first transmission opportunity for transmitting transmit power control commands are to be delayed until a second, subsequent transmission opportunity for transmitting transmit power control commands.

In some aspects, network entity <NUM> may select a maximum transmit power control command when consolidating a plurality of transmit power control commands. For example, when network entity <NUM> receives, from a plurality of other UEs <NUM>, a plurality of transmit power control commands indicating a transmit power for source UE <NUM>, network entity <NUM> may select a particular transmit power control command indicating a greatest transmit power. In this case, network entity <NUM> may provide a single transmit power control command indicating the greatest transmit power to source UE <NUM>.

In some aspects, network entity <NUM> may use information identifying transmit power control command step sizes for each other UE <NUM> to determine which transmit power control command indicates a greatest transmit power. In some aspects, network entity <NUM> may consolidate the plurality of transmit power control commands based at least in part on storing information identifying step sizes for each other UE <NUM>. In contrast, when network entity <NUM> lacks stored information identifying a step size for another UE <NUM>, network entity <NUM> may forgo consolidating transmit power control commands or may consolidate only transmit power control commands for other UEs <NUM> for which network entity <NUM> stores step size information.

In some aspects, network entity <NUM> may consolidate the plurality of transmit power control commands based at least in part on an index value. For example, network entity <NUM> may select a highest indexed transmit power control command and provide the highest indexed transmit power control command to source UE <NUM>. In this case, each transmit power control command may have the same step size or different step sizes. In some aspects, network entity <NUM> may consolidate the plurality of transmit power control commands based at least in part on a signal strength of a plurality of other UEs <NUM>. For example, network entity <NUM> may select a transmit power control command from a UE <NUM> with a lowest SINR to relay to source UE <NUM>. In this case, network entity <NUM> may identify the UE <NUM> with the lowest SINR based at least in part on RSRP reports received from the plurality of other UEs <NUM> that provide transmit power control commands for consolidation and/or for relay to source UE <NUM>. In some aspects, network entity <NUM> may consolidate the plurality of transmit power control commands based at least in part on a plurality of factors, such as based at least in part on a maximum transmit power and based at least in part on an index value.

As further shown in <FIG>, and by reference numbers <NUM> and <NUM>, source UE <NUM> may alter a transmit power and transmit a second sidelink communication. For example, based at least in part on receiving the transmit power control command from network entity <NUM>, source UE <NUM> may alter a transmit power for subsequent sidelink communications. In some aspects, source UE <NUM> may receive a plurality of transmit power control commands. For example, source UE <NUM> may receive a transmit power control command from network entity <NUM>, from a UE <NUM> (e.g., a target UE, a non-target UE, and/or the like), and may aggregate the transmit power control commands to determine a subsequent transmit power. In this way, source UE <NUM>, the other UE <NUM>, and network entity <NUM> enable closed-loop power control for sidelink communications.

<FIG> is a diagram illustrating an example process <NUM> performed by a UE, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a UE (e.g., UE <NUM> and/or the like) performs operations associated with sidelink transmit power control command generation.

As shown in <FIG>, in some aspects, process <NUM> includes receiving, from a source UE, a first sidelink communication (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) receives, from a source UE, a first sidelink communication, as described above.

As further shown in <FIG>, in some aspects, process <NUM> includes generating a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with the first sidelink communication (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) generates a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with the first sidelink communication, as described above.

As further shown in <FIG>, in some aspects, process <NUM> includes transmitting, to control a transmit power for a second sidelink communication, the transmit power control command to the source UE (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to control a transmit power for a second sidelink communication, the transmit power control command to the source UE, as described above.

In a first aspect, the signal to interference noise ratio measurement is performed on a reference signal transmitted in connection with the first sidelink communication, and the reference signal is at least one of a channel state information reference signal, a sounding reference signal, or a demodulation reference signal.

In a second aspect, alone or in combination with the first aspect, the signal to interference noise ratio measurement is performed on decoded data symbols of the first sidelink communication.

In a third aspect, alone or in combination with one or more of the first and second aspects, the transmit power control command is based at least in part on a power offset value.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the power offset value is based at least in part on a transmit data-to-pilot power ratio or a modulation and coding scheme.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the signal to interference noise ratio measurement is performed on another transmission that is quasi co-located with the first sidelink communication.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the transmit power control command is based at least in part on a type of channel of the first sidelink communication.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the type of channel is at least one of a physical sidelink control channel, a physical sidelink shared channel, a physical sidelink feedback channel, a sidelink channel state information reference signal channel, a sidelink tracking reference signal channel, or a sidelink positioning reference signal channel.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the transmit power control command is based at least in part on a type of transmission of the first sidelink communication.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the type of transmission is a groupcast transmission or a unicast transmission.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, a periodicity of the signal to interference noise ratio measurement is based at least in part on a processing characteristic of the first sidelink communication.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the transmit power control command is based at least in part on a signal to noise ratio difference between the first sidelink communication and another communication.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the transmit power control command is based at least in part on a channel state information interference measurement.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the transmit power control command is based at least in part on a vacant resource element measurement.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the first sidelink communication is received based at least in part on monitoring for the first sidelink communication.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the transmit power control command is generated based at least in part on the signal to interference noise ratio measurement satisfying a threshold.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, the threshold is based at least in part on at least one of an interference criterion, a reference signal received power, a modulation and coding scheme on another link that is interfered with by the first sidelink communication, or a configuration of a receiver beam.

According to the invention, in a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, process <NUM> includes receiving one or more other transmit power control commands from one or more other UEs, and generating the transmit power control command includes generating the transmit power control command based at least in part on the one or more other transmit power control commands.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the transmit power control command is based at least in part on a maximum transmit power control command of the one or more other transmit power control commands.

In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the transmit power control command is based at least in part on a step size associated with one or more links with the one or more other UEs.

In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, the transmit power control command is based at least in part on a particular transmit power control command, of the one or more other transmit power control commands, associated with a particular UE, of the one or more other UEs, with a signal with a lowest signal to noise ratio.

In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, process <NUM> includes receiving a sidelink control information message triggering generation of the transmit power control command.

In a twenty-second aspect, alone or in combination with one or more of the first through twenty-first aspects, the sidelink control information message is received in connection with a sidelink channel payload.

In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, a gap between the sidelink control information message and the signal to interference noise ratio measurement is greater than a time threshold.

In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, the transmit power control command is based at least in part on a plurality of transmit power control commands generated during a time period between receiving the first sidelink communication and transmitting the transmit power control command.

In a twenty-fifth aspect, alone or in combination with one or more of the first through twenty-fourth aspects, the transmit power control command is transmitted using a first available transmission resource.

<FIG> is a diagram illustrating an example process <NUM> performed by a UE, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a network entity (e.g., BS <NUM>, UE <NUM>, network entity <NUM>, and/or the like) performs operations associated with sidelink transmit power control command generation.

As shown in <FIG>, in some aspects, process <NUM> includes determining a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with a first sidelink communication (block <NUM>). For example, the network entity (e.g., using controller/processor <NUM>, controller/processor <NUM>, and/or the like) determines a transmit power control command based at least in part on a signal to interference noise ratio measurement associated with a first sidelink communication, as described above.

As further shown in <FIG>, in some aspects, process <NUM> includes transmitting, to control a transmit power for a second sidelink communication, the transmit power control command to a source user equipment (UE) (block <NUM>). For example, the network entity (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like) transmits, to control a transmit power for a second sidelink communication, the transmit power control command to a source UE, as described above.

In a first aspect, determining the transmit power control command includes generating the transmit power control command.

In a second aspect, alone or in combination with the first aspect, determining the transmit power control command includes consolidating one or more received transmit power control commands.

In a third aspect, alone or in combination with one or more of the first and second aspects, at least one of the one or more received transmit power control commands is a consolidated transmit power control command.

According to the invention, in a fourth aspect, alone or in combination with one or more of the first through third aspects, process <NUM> includes receiving one or more other transmit power control commands from one or more other UEs, and generating the transmit power control command includes generating the transmit power control command based at least in part on the one or more other transmit power control commands.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the transmit power control command is based at least in part on a maximum transmit power control command of the one or more other transmit power control commands.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the transmit power control command is based at least in part on a step size associated with one or more links with the one or more other UEs.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the transmit power control command is based at least in part on a particular transmit power control command, of the one or more other transmit power control commands, associated with a particular UE, of the one or more other UEs, with a signal with a lowest signal to noise ratio.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, a gap between receiving the transmit power control command for relay and transmitting the transmit power control command is greater than a time threshold.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the time threshold is based at least in part on a capability of the network entity.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the network entity is a UE or a base station.

Claim 1:
A method of wireless communication performed by a user equipment, UE, comprising:
receiving (<NUM>), at the UE, from a source UE, a first sidelink communication;
generating (<NUM>), at the UE, a transmit power control command based at least in part on:
a signal to interference noise ratio measurement associated with the first sidelink communication; and one or more transmit power control commands received by the UE from one or more other UEs;
transmitting (<NUM>), to control a transmit power for a second side link communication, the transmit power control command from the UE to the source UE.