Abstract: Certain aspects of the present disclosure provide techniques for rate-splitting multiple access (RSMA) for sidelink communication. An example method include determining a set of resources, in a resource pool of one or more resource pools, to use for transmitting information to a group of receiver UEs (RX UEs), transmitting to the group of RX UEs an indication that the TX UE will transmit the information to the group of RX UEs using rate splitting multiple access (RSMA), and transmitting the information to the group of RX UEs in the set of resources using RSMA. Transmitting the information to the group using RSMA may include transmitting a common message including combined control information to the group of RX UEs using a first precoder and transmitting individual private data messages to each RX UE in the group of RX UEs using separate respective precoders different from the first precoder.

Abstract: Wireless communication techniques that include PTRS resource density recommendation and selection techniques are discussed. A UE may transmit to a base station a set of phase tracking reference signal (PTRS) resource density recommendations that are determined based, at least in part, on a block error rate (BLER). The base station may transmit to the UE an indication of PTRS resource densities to use for wireless communication of the PTRS based, at least in part, on the BLER associated with the received set of PTRS resource density recommendations. The base station and/or the UE may at least one of receive or transmit a PTRS based, at least in part, on the indicated PTRS resource densities. Other aspects and features are also claimed and described.

Abstract: A user equipment (UE) transmits, to a base station, an indication of a capability for physical downlink control channel (PDCCH) monitoring. The UE receives, from the base station, a configuration of a plurality of search space set groups based on the capability. The apparatus then monitors PDCCH candidates for a PDCCH from the base station based on a search space set group and the configuration. A base station receives, from a UE, an indication of a capability for PDCCH monitoring and transmits, to the UE, a configuration of a plurality of search space set groups based on the capability. The apparatus transmits a PDCCH to the UE based on the search space set group and the configuration associated with the search space set group.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. Various aspects relate generally to hybrid automatic repeat request (HARQ) identifier determination associated with cross-link interference (CLI) measurements. Some aspects more specifically relate to handling of HARQ identifier determinations for communications that are dropped due to collision with a CLI measurement. In some aspects, a user equipment (UE) and/or a network node may skip an increment of a value of a HARQ identifier for communications that are dropped due to collisions with CLI measurements. Where the scheduling information indicates or is associated with a single HARQ identifier, the UE and/or the network node may not increment the HARQ identifier for communications, from the multiple communications, that are dropped because of a collision with a CLI measurement.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a first tracking reference signal configuration and a second tracking reference signal configuration. The first tracking reference signal configuration may include a first set of parameters and the second tracking reference signal configuration may include a second set of parameters. The UE, the base station, or both may identify an indicator for selection from among the first tracking reference signal configuration and the second tracking reference signal configuration. The UE may receive, from the base station and based on the identified indicator for selection, a tracking reference signal in accordance with the first tracking reference signal configuration or the second tracking reference signal configuration.

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may transmit a random access message (e.g., msgA or msg3) using a modulation and coding scheme (MCS) selected based on the frequency band and subcarrier spacing utilized for the random access procedure. The MCS may depend on the frequency band and a size of the SCS satisfying a threshold. In some cases, a base station may select and indicate the MCS for the UE. Additionally or alternatively, a phase tracking reference signal may be transmitted along with a random access message to correct for phase noise.

Abstract: Certain aspects of the present disclosure provide techniques for ultra-reliable low latency communications (URLLC) indications with multi-physical downlink shared channel (PDSCH) and/or multi-physical uplink shared channel (PUSCH) grants. A method that may be performed by a user equipment (UE) includes receiving, from a network entity, downlink control information (DCI) scheduling a plurality of transmissions of a first priority, wherein the DCI comprises at least one field indicating one or more parameters to apply when at least one previously scheduled transmission of a second priority collides with: one or more of the plurality of transmissions of the first priority, or one or more transmissions acknowledging the one or more of the plurality of transmissions of the first priority; and applying the one or more parameters to process the plurality of the transmissions of the first priority.

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may identify, for an initial slot of a periodic interval, a number of symbols included in the initial slot and a length of cyclic prefixes used for the symbols included in the initial slot based on a subcarrier spacing that is configured for wireless communication. The length of a first set of cyclic prefixes may be based on a length of a cyclic prefix calculated for an initial symbol of the initial slot at the configured subcarrier spacing. The wireless device may perform communications based on the determined number of symbols and length of cyclic prefixes included in the initial slot. Performing communications may include allocating resources based on a length of the cyclic prefixes used for the symbols included in the initial slot.

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method of wireless communication includes receiving, at a user equipment (UE) from a network entity or a second UE, multiple demodulation reference signals (DMRSs) including a first set of DMRSs allocated to a first DMRS symbol and a first subset of subcarriers and a second set of DMRSs allocated to a second DMRS symbol and a second subset of subcarriers. The method also includes receiving, from the network entity or the second UE, a phase tracking reference signal (PTRS) associated with the multiple DMRSs. The method further includes performing channel estimation based on the multiple DMRSs and a phase tracking process based on the multiple DMRSs and the PTRS. Other aspects and features are also claimed and described.

Abstract: A method for wireless communication by a user equipment (UE) includes transmitting, to a network node, a first message indicating a capability of the UE to transmit a multiplexed low peak-to-average power ratio (PAPR) demodulation reference signal (DM-RS) and a high PAPR reference signal (RS) within a single slot. The method also includes multiplexing, associated with the capability, the low PAPR DM-RS with the high PAPR RS within the single slot. The method further includes transmitting, to the network node, the multiplexed low PAPR DM-RS and high PAPR RS within the single slot.

Abstract: Certain aspects of the present disclosure provide techniques for receiving an indication of variable tracking reference signal (TRS). A method that may be performed by a user equipment (UE) includes determining a configuration indicating a value for a variable tracking reference signal (TRS) density, monitoring for TRSs from a base station (BS) according to the indicated value for the variable TRS density, and performing at least one of frequency tracking or timing tracking based on the monitoring.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability information indicating a capability of the UE to support a rate splitting multiple input multiple output (MIMO) communication. The UE may receive, based at least in part on the capability information, configuration information associated with the rate splitting MIMO communication. The UE may identify, based at least in part on the configuration information, at least one of a downlink control information (DCI) format, a DCI size, one or more DCI fields, or one or more DCI field sizes associated with a DCI communication associated with the rate splitting MIMO communication. The UE may monitor the DCI communication and decoding the rate splitting MIMO communication based at least in part on the configuration information and the DCI communication. Numerous other aspects are described.

Abstract: Aspects described herein relate to a user equipment (UE) determining a reference signal port of multiple configured reference signal ports to use in transmitting a reference signal for a random access message. In one aspect, a configuration indicating multiple reference signal ports to use in transmitting reference signals for a random access message can be transmitted to the UE, as well as an indication of a reference signal port of the multiple reference signal ports to be used in transmitting a reference signal for the random access message.

Abstract: Methods, systems, and devices for wireless communication are described. A device may perform rate splitting on a first message for a first user equipment (UE) and a second message for a second UE, the first message comprising a first private portion and a first common portion, and the second message comprising a second private portion and a second common portion. The device may combine the first common portion and the second common portion into a third common portion. The device may generate cyclic redundancy check (CRC) parity bits associated with at least one of the first private portion and the third common portion and attach the generated CRC parity bits to one or more blocks associated with the transmission. The device may transmit the first private portion and the third common portion to the first UE, and the second private portion and the third common portion to the second UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability information indicating a capability of the UE to support a rate splitting multiple input multiple output (MIMO) communication. The UE may receive, based at least in part on the capability information, configuration information associated with the rate splitting MIMO communication. The UE may identify, based at least in part on the configuration information, at least one of a downlink control information (DCI) format, a DCI size, one or more DCI fields, or one or more DCI field sizes associated with a DCI communication associated with the rate splitting MIMO communication. The UE may monitor the DCI communication and decoding the rate splitting MIMO communication based at least in part on the configuration information and the DCI communication. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter may apply at least one of an amount of delay or an amount of Doppler shift to a signal transmission including a first signal for transmission from a first antenna and a second signal for transmission from a second antenna, wherein the second signal is shifted, relative to the first signal, in a delay-Doppler domain, by the at least one of the amount of delay or the amount of Doppler shift. The transmitter may output, in a time-frequency domain, the first signal from the first antenna and the second signal from a second antenna. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein provide for priority and feedback resources for rate-split transmissions. In rate-splitting approaches, messages destined for various user equipment (UEs) may be split into a common portion and a private portion. The common portion of messages may be transmitted to multiple UEs, and each of the private portions may be transmitted to individual UEs, so that each UE may receive their entire respective messages. The network may assign different feedback resources for the common portion and the private portion of a rate-split transmission. The feedback resource for the common portion may be prior to the feedback resource for the private portion.

Abstract: A transmitter may be configured to transmit, to a receiver, information configuring a repetition pattern of at least one of a common part of a rate-splitting multiple access (RSMA) message or a private part of the RSMA message. The transmitter may be further configured to transmit, to the receiver, at least one repetition of the at least one of the common part or the private part of the RSMA message according to the repetition pattern. The receiver may be configured to receive the information configuring the repetition pattern. The receiver may be further configured to receive, from the transmitter, at least one repetition of the at least one of the common part of the RSMA message or the private part of the RSMA message after receiving the information configuring the repetition pattern.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration of a set of synchronization signal blocks (SSBs) to be transmitted by a first base station or a second base station. In some cases, the UE may be served by the first base station and the UE may receive, from the first base station or the second base station, a message indicating that a transmission of at least one SSB of the set of SSBs is canceled and indicating resources for a signal (e.g., a reference signal, alternative SSB transmission) to be transmitted by the first base station or the second base station as an alternative to the canceled at least one SSB. The UE may receive, based on the received message from the first base station or the second base station, the signal using the indicated resources.

Abstract: Aspects of the present disclosure can be implemented in a method for wireless communication by a first wireless node, such as a user equipment (UE) or network entity. The method generally includes identifying different patterns of phase tracking reference signal (PTRS) tones for receiving a PTRS, determining when to change at least one of the different patterns of the PTRS tones from one symbol to another, and monitoring for one or more symbols of the PTRS, from a second wireless node, according to the determination.