Abstract: Certain aspects of the present disclosure provide techniques for scaling transmission power across transmit chains for physical uplink shared channel (PUSCH) transmissions.

Abstract: Methods, systems, and devices for wireless communications are described. A first device (e.g., a user equipment (UE)) may receive signaling indicating a set of channel state information (CSI) report configurations for sidelink communications between the first device and a second device. The first device may then receive a request from the second device for a CSI report according to a first CSI report configuration from the set of CSI report configurations. The first device may perform channel measurements based on receiving the request and may generate the CSI report using the channel measurements according to the first CSI configuration. In some cases, the first device may determine whether to additionally generate the CSI report using one or more previous channel measurements based on whether the previous channel measurements were taken according to the same CSI report. The first device may then transmit the generated CSI report to the second device.

Abstract: Aspects of the disclosure relate to techniques for peak-to-average power ratio (PAPR) reduction based on a tone reservation (TR) algorithm. For a TR algorithm, a suitable subset of tones from among a full set of tones in a given resource allocation are reserved for use as peak reduction tones (PRT). An apparatus, such as a wireless communication device, selects a set of PRTs based on a deterministic pseudo-random tone selection algorithm, such as quadratic sampling, cubic sampling, or Fibonacci-type sampling. The apparatus determines a PAPR reduction waveform for transmission on the PRTs and transmits a data waveform multiplexed with the PAPR reduction waveform on resources corresponding to the resource allocation. Other aspects, embodiments, and features are also claimed and described.

Abstract: Certain aspects provide a method for wireless communication. The method generally includes determining a first configuration for sidelink (SL) communication by a user-equipment (UE), determining a second configuration for uplink (UL) or downlink (DL) communication by the UE, the first configuration and the second configuration being determined to allow the UL or DL communication to overlap in time domain with the SL communication, and transmitting the first configuration and the second configuration to the UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a transport block size based at least in part on a set of physical uplink shared channel resources corresponding to a set of physical uplink shared channel repetitions that are configured to be transmitted over a repetition unit having a plurality of slots in accordance with a frequency hopping pattern that is configured such that a repetition slot count associated with the repetition unit and a frequency hop length are related by an integer-multiple relationship. The UE may transmit the set of physical uplink shared channel repetitions based at least in part on the transport block size. Numerous other aspects are provided.

Abstract: Aspects relate to mechanisms for wireless communication devices for tone reservation. A user equipment (UE) receives an indication of one or more peak-reduction tone (PRT) resources for a transmission of one or more signals for a base station. The UE transmits a first signal to the base station on an uplink. The UE transmits a second signal to a relay entity on a sidelink for reception by the base station. The second signal is transmitted on the sidelink utilizing the one or more PRT resources.

Abstract: Certain aspects of the present disclosure provide techniques for inter-slot and intra-slot frequency hopping in full duplex. A method performed by a user equipment (UE) includes receiving scheduling information from a network entity, wherein the scheduling information schedules transmission of a plurality of uplink data channel repetitions in a plurality of slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions. The method also includes taking one or more actions related to transmitting, according to the frequency hopping scheme, the plurality of uplink data channel repetitions in the plurality of slots based on the scheduling information.

Abstract: Certain aspects of the present disclosure provide techniques for multiplexing uplink control information on physical uplink shared channels in full duplex mode. An example method that may be performed by a UE includes: receiving scheduling information from a network entity, wherein: the scheduling information schedules, in a first full duplex (FD) slot of a plurality of slots, transmission of a first uplink (UL) data channel repetition of a plurality of UL data channel repetitions and uplink control information (UCI), and the FD slot comprises an UL subband for UL transmissions and a downlink (DL) subband for DL transmissions, multiplexing the first UL data channel repetition with the UCI to form a multiplexed transmission, and transmitting the multiplexed transmission in the FD slot.

Abstract: Methods, systems, and devices for wireless communications are described in which a base station may identify a null space matrix that lies within a null space of an effective channel matrix for communications between the base station and a user equipment (UE). An indication of the null space matrix may be provided to the UE, and the null space matrix used to determine modifications to a precoding matrix. The base station and UE may determine a redistribution matrix that provides a reduced variance of transmission powers for a number of transmission channels, where a product of the null space matrix and the redistribution matrix may be computed and added to the precoding matrix to generate a modified precoding matrix. The modified precoding matrix may be used to generate the communications from the base station and UE with reduced power variance across channels.

Abstract: Certain aspects of the present disclosure provide techniques for frequency hopping for data channel repetition in full duplex. A method performed by a user equipment (UE) includes receiving information from, a network entity, scheduling transmission of a plurality of uplink data channel repetitions in one or more slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions and transmitting the plurality of uplink data channel repetitions in the one or more slots, the one or more slots comprising at least a full duplex slot including an uplink subband and a downlink subband.

Abstract: Aspects of the present disclosure provide techniques for wireless communication. A method by a user equipment (UE) includes receiving scheduling information from a network entity. The scheduling information schedules transmission of a first uplink (UL) channel repetition of a plurality of UL channel repetitions in a first full duplex (FD) slot of a plurality of slots. Additionally, the first UL channel repetition is associated with one or more time domain resource allocations (TDRAs) and one or more frequency domain resource allocations (FDRAs). Additionally, based on the one or more FDRAs associated with the first UL channel repetition, a portion of the first UL channel repetition is scheduled to occur in a downlink subband of the first FD slot. The method also includes taking one or more actions to transmit the first UL channel repetition based on the scheduling information.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) having partially coherent antennas may be configured for simultaneous transmissions on groups of antennas. To achieve the benefits of simultaneous transmissions using groups of antenna that are partially coherent, without having the transmissions affect each other, the UE may apply a hybrid closed-loop multiple-input multiple-output (MIMO) scheme among each antenna in the antenna groups where phase coherence can be maintained. Following the hybrid closed-loop MIMO scheme, the UE may apply a transparent diversity scheme across each antenna of the groups. Alternatively, the UE may first apply the transparent diversity scheme and next apply the hybrid closed-loop MIMO scheme. By applying a hybrid closed-loop MIMO scheme, and a transparent diversity scheme, the UE may fully realize its resources and contribute to an improved spatial diversity for a MIMO system.

Abstract: Aspects of the disclosure relate to communication using a multi-panel base station. In an aspect, a base station may determine a plurality of indicators identifying a plurality of antenna panels on the base station, wherein each indicator of the plurality of indicators identifies a respective antenna panel of the plurality of antenna panels. Further, the base station may transmit the plurality of indicators to a user equipment (UE) to respectively identify the plurality of antenna panels.

Abstract: Certain aspects of the present disclosure provide techniques for repetition cancellation in full duplex communications.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently transmitting uplink signals to a base station using shared antennas. A first device may be in communications with a base station using local antennas and may identify a second device having auxiliary antennas available for transmitting uplink signals to the base station. Because the local antennas and auxiliary antennas may have different capabilities (e.g., due to different power or other constraints), the first device may generate first uplink signals for transmission using the local antennas differently from second uplink signals for transmission using the auxiliary antennas. The first device may transmit the first uplink signals to the base station using the local antennas and transmit the second uplink signals to the second device for transmission to the base station using the auxiliary antennas based on different configurations.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a resource allocation indicating a plurality of transmission tones comprising a subset of data tones of a plurality of data tones and a subset of peak reduction tones (PRTs) of a plurality of PRTs, wherein the resource allocation indicates a plurality of data tone locations and a plurality of PRT locations within a particular bandwidth, wherein a subset of PRT locations of the plurality of PRT locations are arranged relative to a subset of data tone locations of the plurality of data tone locations according to a PRT sequence corresponding to a set of allocated frequency resources; and transmit a data transmission using a waveform based at least in part on the resource allocation. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may perform uplink reference signal bundling for access link communications and transmit sidelink communications using time or frequency division multiplexed resources. The UE may determine to drop or to transmit a sidelink communication based on a relationship with multiple instances of an uplink reference signal that are to maintain phase continuity. The UE may drop a sidelink communication when a time duration between two instances of the uplink reference signal is less than or equal to a time threshold value, and may transmit the sidelink communication when the time duration exceeds the time threshold value. In frequency division multiplexed cases, the UE may set a transmission power for each instance of the uplink reference signal, and the sidelink communication may use a remaining amount of power.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may select an uplink transmission power sharing configuration to use for transmission of one or more uplink messages. The uplink transmission power sharing configuration may be based on a first uplink transmission power capability of a first radio frequency (RF) chain of the UE and on a second uplink transmission power capability of a second RF chain of the UE. The UE may transmit the one or more uplink messages to a network entity in accordance with the uplink transmission power sharing configuration. Specifically, the UE may transmit the one or more uplink messages via the first RF chain using a first transmission power, and may transmit the one or more uplink messages via the second RF chain using a second transmission power that is different from the first transmission power.

Abstract: Aspects presented herein may enable a UE to determine whether phase continuity is to be maintained for one or more uplink transmissions when the UE is configured with a frequency-hopping with zero frequency offset. In one aspect, a UE receives, from a network entity, an indication of frequency hopping with zero frequency offset. The UE determines whether phase continuity is to be applied to UL transmissions based on the indication of the frequency hopping with zero frequency offset. The UE transmits, to the network entity, at least one uplink channel with no phase continuity based on the determination to not apply phase continuity to the UL transmissions.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may be configured to transmit two or more consecutive transmissions that may be used for demodulation reference signal (DMRS) bundling. If criteria for DMRS bundling are not satisfied, the UE may generate dummy data to transmit during the skipped configured grant occasion, and may maintain phase continuity across the skipped configured grant occasion and any other PUSCHs in a set of uplink transmissions. In some examples, the UE may deprioritize DMRS bundling for sets of PUSCHs during which a PUSCH is to be skipped. If criteria for DMRS bundling are not satisfied, the UE may not maintain phase continuity across the set of PUSCHs, and may refrain from transmitting any data during the CG-PUSCH occasion.