Methods, systems, and devices for wireless communications are described. A user equipment (UE) may alter, or otherwise cancel, a sidelink communication as a result of a cancelation indicator (CI) corresponding to a different UE to support automatic gain control (AGC) calibration. The UE may determine to cancel or alter sidelink resources that at least partially overlap in time and are adjacent to, yet non-overlapping, in frequency to a high priority transmission. In some implementations, the UE may cancel the sidelink communication from an earliest overlapping symbol to the end of a slot. In other implementations, the UE may cancel a portion of the sidelink communication and resume sidelink communications within the same slot. Additionally or alternatively, the UE may utilize one or more reference signals or symbols to enable AGC recalibration during the slot.

This application provides a communications method and apparatus. According to the method, a receiving terminal receives, from one or more sending terminals, X PSSCHs that are in a one-to-one correspondence with X PSFCH resources, determines M PSFCH resources based on priorities of the X PSFCH resources, transmit power corresponding to the X PSFCH resources, and total transmit power of the receiving terminal, and sends feedback information to some or all of the one or more sending terminals on the M PSFCH resources, so that the receiving terminal can send the M PSFCH resources based on a sending capability (namely, the total transmit power) of the receiving terminal. This improves overall performance of a network system.

A method for operation of a first device (100) in a wireless communication system is proposed. The method can comprise the steps of: determining a transmission parameter relating to a sidelink positioning reference signal (S-PRS) on the basis of information obtained by means of the first device (100); and transmitting the S-PRS on the basis of the transmission parameter.

Method and arrangements, e.g. a device, relating to provision of adjustments of power spectral densities associated with a reference signal sequence in a wireless communication network. A single reference signal sequence is assigned to simultaneous transmissions of a plurality of physical channels, each physical channel occupying a different frequency region of a frequency range, each physical channel having different characteristics. An adjustment of a Power Spectral Density, PSD, of the single reference signal sequence is provided in each physical channel of the physical channels in the frequency region occupied by the physical channel.

Embodiments disclosed herein provide various aspects that would allow for Vehicle to Everything (V2X) or peer-to-peer (P2P) or sidelink (SL) communications. In an embodiment, a communication device may include: a memory for storing computer-readable instructions; and processing circuitry, configured to process the instructions stored in the memory to: obtain a first path loss between the communication device and a base station, wherein the communication device is coupled to the base station; calculate a second path loss based on one or more sidelink reference signal received power (S-RSRP) indicators received by the communication device, wherein the S-RSRP indicators are received from one or more communication devices within a communication range of the communication device; and determine a transmit (Tx) power of the communication device based on the first path loss and the second path loss.

Power control for a bidirectional Sidelink (SL) is provided. Solutions proposed herein limit the Physical SL Feedback Channel (PSFCH) transmit power level to that of the power level used for Physical SL Shared Channel (PSSCH) so as to prohibit too high transmit power for the PSFCH. In addition, if the difference between the PSSCH and PSFCH exceeds a preconfigured threshold (e.g., the PSFCH is too low), a Receiver (Rx) User Equipment (UE) can take preventive actions that ensure sufficient quality over the PSFCH. In further embodiments, both UEs continuously maintain the estimated SL Path Loss (PL) and transmit a single SL Channel State Information Reference Signal (SCSI-RS), and associated measurement reports rather than triggering new SCSI-RS transmissions and measurement reports for each PSSCH and associated PSFCH channel per SL (e.g., PC5) connection.

The disclosure relates to a communication scheme and a system therefor which combines IoT technology and a 5G communication system for supporting a higher data transmission rate than a 4G system. The disclosure may be applied to a smart service (e.g., a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, a security and security related service, or the like) based on the 5G communication technology and the IoT related technology. According to an embodiment of the disclosure, there is provided a method of a sidelink reception user equipment (UE) in a communication system. The method includes: receiving, from a base station, configuration information associated with power control for transmission of a physical sidelink feedback channel (PSFCH); receiving a plurality of physical sidelink shared channels (PSSCH) scheduled based on a plurality of sidelink control information (SCI); identifying at least one first PSFCH based on the number of PSFCHs scheduled in response to reception of the plurality of PSSCHs and the maximum number of PSFCHs that the first UE is capable of transmitting; in case that total transmission power for the at least one first PSFCH is greater than maximum transmission power of the first UE, identifying at least one second PSFCH in order of high priority indicated by the plurality of SCI, wherein a number of the at least one second PSFCH is the maximum number of PSFCHs which enables the sum of transmission power to be less than or equal to the maximum transmission power; identifying first transmission power for each of the at least one second PSFCH based on the number of the at least one second PSFCH; and transmitting the at least one second PSFCH based on the first transmission power.

Various aspects to improve a sidelink communication by UEs in a presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, the UE may determine RIS location information for a RIS device controlled by a base station, configure one or more sidelink communication parameters based on the RIS location information, and perform a sidelink communication with a second UE based on the one or more sidelink communication parameters. In an aspect, the UE may receive, from a base station, a RIS configuration setting indicating communication patterns of a RIS device controlled by the base station, the communication patterns being respectively associated with pattern durations, select a pattern duration of the pattern durations, and perform a sidelink communication with a second UE during the selected pattern duration of the pattern durations that is associated with a respective communication pattern of the communication patterns.

Provided are a method by which a first device performs wireless communication, and a device for supporting same. The method can comprise the steps of: transmitting one or more reference signals (RSs) to a second device on the basis of first transmit power; receiving, from the second device, information related to a channel state measured on the basis of the one or more RSs; changing the first transmit power to second transmit power on the basis of the information related to the channel state; and transmitting the one or more RSs to the second device on the basis of the second transmit power.

Apparatus and methods are provided for sidelink measurement configuration and report for open-loop sidelink power control. In one embodiment, the SL measurement report configuration configures a first measurement report, and wherein the reference threshold is an absolute reference threshold. In another embodiment, the reference threshold is an SL measurement result in an SL measurement report previously sent to the transmitting UE. In some embodiments, the reporting condition is the layer-3 (L3) filtered SL RSRP measurement being the offset higher or lower than the reference threshold. In yet another embodiment, the reporting condition is an explicit request of measurement report from the transmitting UE. In one embodiment, the SL measurement report includes one or more elements comprising a Boolean indicator, a delta value between the L3 filtered SL RSRP measurement and the reference threshold, and an absolute value of the L3 filtered SL RSRP measurement.