Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for retransmission and selection of HARQ and MCS based on partial sensing. A UE may perform a partial sensing procedure to identify one or more available resources for a sidelink transmission of the UE and transmit the sidelink transmission on a resource selected from the one or more available resources. The sidelink transmission may include at least one of a HARQ retransmission parameter or an MCS selected for the sidelink transmission based on at least one of a number of candidate slots for the partial sensing procedure, a quantity of the one or more available resources within the number of candidate slots, or a number of times that a threshold for a minimum amount of the one or more available resources is increased.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The UE receives a beam monitoring configuration indicating at least one condition to be satisfied for transmission of a beam condition report. The UE monitors at least one beam failure detection (BFD)-reference signal (RS) during an ON duration of a discontinuous reception (DRX) cycle. The UE transmits the beam condition report, at an end of the ON duration of the DRX cycle, when the at least one condition is satisfied during the ON duration of the DRX cycle.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to mobility techniques that allow for dynamically updating a set of cells activated to serve a user equipment (UE) and synchronizing with the cells activated to serve the UE. An example method generally includes receiving, from a network entity, signaling indicating a set of cells supported by one or more distributed units (DUs) under a common central unit (CU) and one or more timing advance groups (TAGs) for the set of cells; identifying a subset of the set of cells activated to serve the UE; receiving physical (PHY) layer or medium access control (MAC) layer mobility signaling; updating the subset of activated cells based on the mobility signaling; and communicating with the subset of activated cells based on a timing advance associated with the one or more TAGs in which the updated subset of activated cells belong.

Abstract: Certain aspects of the present disclosure provide techniques for wireless communications by a user equipment (UE), comprising receiving, from a network entity, one or more configured grant (CG) configurations, each defining at least one CG occasion within a data period, obtaining (e.g., periodic uplink) traffic in one or more bursts, and transmitting the traffic to the network entity in multiple physical uplink shared channel (PUSCHs) within the data period.

Abstract: In operation, the UE in the cell (SpCell/SCell) may be configured to operate with beam group specific BFRs, cell-level BFRs, or combinations of them under a beam failure configuration that is determined according to various rules. A method of wireless communication performed by a user equipment (UE) and a UE is disclosed. The method includes determining a beam failure configuration for a serving cell, the beam failure configuration including at least one of a beam failure parameter of a beam group or a beam failure parameter of a cell; and detecting, in the serving cell based at least in part on the beam failure configuration, a beam failure recovery (BFR) based at least in part on the beam failure configuration. The beam failure configuration is determined based on various rules that control the operation of the BFR.

Abstract: Certain aspects of the present disclosure provide techniques for random access channel (RACH) occasion assignment. A method that may be performed by a user equipment (UE) includes receiving, from a base station (BS), a plurality of synchronization signal blocks (SSBs), each SSB associated with a different transmit beam of the BS. The method further includes transmitting a random-access preamble on a first RACH occasion associated with a first SSB of the plurality of SSBs, wherein the first RACH occasion is one of a plurality of RACH occasions associated with the plurality of SSBs, wherein the first SSB is associated with a first number of the plurality of RACH occasions and a second SSB of the plurality of SSBs is associated with a second number of the plurality of RACH occasions, wherein the first number is different than the second number.

Abstract: Aspects presented herein may improve the performance and/or efficiency of a BFD procedure for a UE, where the UE may use DMRS to perform the BFD to reduce the occasion(s) of configuring multiple or frequent CSI-RS resources sets for the UE. In one aspect, an apparatus measures RSRP of one or more reference signals in a reference signal set for a BFD, the one or more reference signals include at least one DMRS. Then the apparatus compares the measurement for the at least one DMRS to a threshold. Then the apparatus initiates or restarts a BFD timer or a BFR procedure based at least in part on the measurement.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit a configuration associated with beam-based measurement reporting for a candidate cell group, wherein the candidate cell group is configured for layer (L1)/layer 2 (L2) mobility, and wherein the candidate cell group includes a deactivated cell. The network node may receive a message indicating a beam-based measurement for the deactivated cell according to the configuration. Numerous other aspects are described.

Abstract: Aspects described herein relate to preempting or cancelling sidelink or uplink communications, by a base station or a user equipment (UE). In an aspect, a base station can determine to schedule a first device to communicate, in first resources, sidelink communications having a first priority, determine to schedule a second device to transmit, in second resources, sidelink or uplink transmissions having a second priority, wherein the second resources overlap the first resources at least in a time domain, and transmit, based on the first priority and the second priority, an indication to the first or second device to preempt or cancel sidelink communications or uplink transmissions in associated resources. In another aspect, a UE can receive an indication to cancel sidelink transmission over sidelink resources previously scheduled for the sidelink transmission, and can refrain from the sidelink transmission over the sidelink resources.

Abstract: This disclosure relates to multi-component carrier grants. Specifically, in one aspect, a relay UE may identify and transmit to a remote UE, a plurality of sidelink component carriers based on a grant including a plurality of downlink component carriers, the plurality of sidelink component carriers associated with the a second communication channel. In another aspect, a remote UE may receive, from a relay UE, a plurality of sidelink component carriers associated with a first communication channel, the plurality of sidelink component carriers derived from a grant including a plurality of downlink component carriers associated with a second communication channel. In a further aspect, a network entity may determine a grant including a plurality of downlink component carriers associated with a first communication channel, the plurality of downlink component carriers used to derive a plurality of sidelink component carriers for a remote UE and associated with the a second communication channel.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sidelink discovery message forwarding. In some implementations, a first user equipment (UE) may receive a discovery message from a second UE. The discovery message may be part of a beam training procedure between the first UE and the second UE. The first UE may forward the discovery message to one or more other UEs based on a condition associated with one or more forwarding termination parameters being satisfied. The first UE may, in some implementations, select one of a broadcast transmission or a unicast transmission for forwarding the discovery message based on one or more parameters associated with the UE. The first UE may transmit the discovery message from the second UE to the one or more other UEs using the selected broadcast or unicast transmission when the condition is satisfied.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a flag is enabled or is disabled, the flag indicating whether channel state information (CSI) associated with a secondary discontinuous reception (DRX) group is permitted to be transmitted outside of an active time associated with a primary DRX group. The UE may selectively transmit the CSI associated with the secondary DRX group in an uplink communication associated with the primary DRX group based at least in part on whether the flag is enabled or is disabled. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first packet and a second packet for transmission during a period for a periodic application. The UE may transmit the first packet and the second packet in a combination of a dynamic grant and a configured grant occasion. In some aspects, a network entity may receive a first packet and a second packet for transmission. The network entity may transmit the first packet and the second packet in a combination of a dynamic grant and a semi-persistent scheduling occasion. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive configuration information, the configuration information indicating that a Layer 1 / Layer 2 (L1/L2) control signal is to be used to indicate when the network node is to: switch from additional transmission reception point (TRP) functionality to primary TRP functionality for a primary serving cell, or switch from a secondary serving cell to the primary serving cell and activate the primary TRP functionality. The network node may receive the L1/L2 control signal. The network node may activate, based at least in part on the L1/L2 control signal, the primary TRP functionality. Numerous other aspects are described.

Abstract: Apparatus, methods, and computer program products for L1 or L2 mobility are provided. An example method may include receiving a carrier aggregation (CA) configuration associated with a L1 or L2 mobility configuration from a network node, the L1 or L2 mobility configuration including primary cell (PCell) configurations for multiple cells. The example method may further include receiving at least one activation or deactivation of one of the PCell configurations from the network node.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a periodic resource grant, the configuration indicating a set of parameters for the periodic resource grant. The UE may receive a dynamic indication of a modification to one or more of the set of parameters. The UE may receive one or more communications via the periodic resource grant based at least in part on the modification. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) (e.g., Tx UE) may transmit or receive a first control message indicating a sidelink beam measurement configuration for performing a sidelink beam sweep procedure using a set of transmit beams. The first UE may select a subset of transmit beams from the set of transmit beams for the sidelink beam sweep procedure based on one or more parameters associated with the sidelink beam measurement configuration. The first UE may then transmit, to a second UE (e.g., Rx UE) during the sidelink beam sweep procedure, a set of sidelink reference signals using respective transmit beams of the subset of transmit beams.

Abstract: For each UE (TxUE) in discontinuous reception (DRX) in sidelink (SL) with each second UE(RxUE), and in communication over an air interface (Uu) with a gNB, determining a TxUE Uu active time. Further determining a TxUE Uu offset time accounting for TxUE processing of both a TxUE SL grant from the gNB and data for SL transmission to each RxUE. The TxUE Uu offset time is greater than or equal to a minimum TxUE Uu offset time. Further determining, for each RxUE, one or more RxUE SL active times, each RxUE SL active time: starting no earlier than a start of the TxUE Uu active time plus the TxUE Uu offset time for a TxUE from which the each RxUE is to receive data, and ending no later than the end of the TxUE Uu active time for a TxUE from which the each RxUE is to receive data.

Abstract: Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communication by a user equipment (UE). The method generally includes receiving lower layer signaling indicating that the UE is to handover to one or more first physical cell identifiers (PCIs) to be used for communication between the UE and the BS and communicating with the BS in accordance with a security key and using the one or more first PCIs, the security key being associated with a PCI.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform a signal measurement. The UE may select, based at least in part on a result of performing the signal measurement, a channel state information (CSI) report parameter, from a plurality of CSI report parameters. The plurality of CSI report parameters may be included in a CSI reporting configuration configured for the UE. The UE may transmit an indication of the selected CSI report parameter in uplink control information (UCI). Numerous other aspects are provided.