Abstract: This disclosure relates to the cross carrier scheduling of sidelink carrier aggregation, and includes a method and apparatus for determining a component carrier (CC) index for at least one of a first sidelink transmission with a second UE and a Uu transmission with a network entity, the CC index indicating one or more CCs among which at least one of the first sidelink transmission and the Uu transmission occur; and communicating at least one of the first sidelink transmission to the second UE and the Uu transmission to the network entity based on the CC index.

Abstract: A sidelink user equipment (UE) receives a group wake-up signal (WUS) from a base station and decodes the group WUS based on zone identification (ID) information of the sidelink UE. A base station transmits a wake-up signal to a group of sidelink user equipments (UEs) and transmits zone ID information to the group. A group wake-up signal parameter is a function of the zone ID information. A base station generates a demodulation reference signal (DMRS) sequence, selects a port for a DMRS, and/or scrambles a control channel or a data channel based on a zone ID of a sidelink UE. A sidelink UE compares a zone ID of the sidelink UE with a zone ID of a neighbor UE and initiates a conditional handover to another cell when the zone ID of the sidelink UE differs from the zone ID of the neighbor UE.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a base station, a UE capability to receive a first portion of a tracking reference signal (TRS) and a second portion of the TRS, the first portion and the second portion associated with a TRS pattern. The UE may receive, from the base station, an indication of the TRS pattern, where the TRS pattern includes the first portion of the TRS pattern and the second portion of the TRS pattern. The UE may receive one or more TRSs according to the first portion of the TRS pattern and the second portion of the TRS pattern.

Abstract: Aspects relate to mechanisms for wireless communication devices to update transmission configuration indicator states (TCI-states), spatial relation (SR) indicators (SRIs), or pathloss reference signals (PL-RSs) for a group of two or more component carriers (CCs) for multi-component carrier communication. A radio access network (RAN) node may generate a message indicating one or more TCI-states, one or more SRs, or one or more PL-RSs to utilize for multi-CC communication. The message may include an index identifying a group of two or more CCs of a plurality of access CCs or a plurality of sidelink CCs associated with the one or more TCI-states, the one or more SRs, or the one or more PL-RSs. A user equipment (UE) may receive the message and update the one or more TCI-states, the one or more SRs, or the one or more PL-RSs for the group of two or more CC for the multi-CC communication based on the message.

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may transmit, to a network entity, a first signal including a request to update a resolution of a phase shifting operation associated with beam-based communications. The UE may receive, from the network entity, a second signal approving the request. The UE may communicate using a beam according to an updated resolution of the phase shifting operation based on the second signal approving the request. Additionally, or alternatively, the UE may transmit a first signal including a request to suspend a beam refinement process based on the resolution of the phase shifting operation. The UE may receive a second signal approving the request to suspend the beam refinement process. The UE may communicate with the network entity using a beam based on suspending further beam refinement in response to the second signal.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for signaling user equipment (UE) capability for sharing quasi co-location (QCL) parameter across a group of frequency bands. For example, the UE may report, to a network entity, a capability of the UE to apply a common spatial QCL parameter for at least one group of frequency bands. The UE receives an indication of a change to the common transmission control indicator (TCI) states or spatial relation parameter to be applied across the group of frequency bands. The UE applies the change across the group of frequency bands.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE, an indication of at least one sidelink unified transmission configuration indicator (TCI) state, wherein the at least one sidelink unified TCI state includes at least one of: a joint forward link and reverse link TCI state, a separate forward link TCI state, or a separate reverse link TCI state. The first UE may communicate with the second UE on at least one of the forward link or the reverse link based at least in part on the indication of the sidelink unified TCI state. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A receiving user equipment (UE) may broadcast messages containing inter-UE cooperation (IUC) information using multiple beams. The IUC information transmitted on each beam may be different for each beam of the receiving UE. For example, each IUC information may contain different preferred resources or non-preferred resources for the receiving UE to receive a transmission from a transmitting UE. The transmitting UE may receive a message containing IUC information from one of the beams of the receiving UE and transmit a signal using resources based on the IUC information contained in the received message. In some examples, the transmitting UE may transmit a channel busy ratio (CBR) request to a receiving UE. The CBR request may specify a transmission configuration indicator (TCI) state, spatial relation, spatial domain filter, or beam according to which the receiving UE is to measure the CBR.

Abstract: Methods, systems, and devices for wireless communications that support inter-user equipment (UE) coordination (IUC) for beamformed communications are described. A first UE may receive, using a first spatial filter, a first sidelink control message including a first sidelink resource reservation associated with a second UE. Additionally, or alternatively, the first UE may receive, using a second spatial filter, a second sidelink control message including a second sidelink resource reservation associated with a third UE. The first UE may transmit, to the second UE or the third UE, an IUC message that indicates a conflict between the first sidelink resource reservation and the second sidelink resource reservation. The IUC message that indicates a conflict may be based on a relationship between the first spatial filter used to receive the first sidelink resource reservation and the second spatial filter used to receive the second sidelink resource reservation.

Abstract: Systems and method for configuring and providing discontinuous reception (DRX) operations in sidelink (SL) mode 1 and mode 2 are disclosed. A first user equipment (UE) may operate in DRX communications with a second UE over a SL while concurrently maintaining DRX communications with a base station. In some embodiments, DRX operations may include the first UE monitoring for either one or both of transmissions in a downlink from a base station and in the SL from the second UE during an active period of a DRX cycle of the DRX configuration. In embodiments, the UE may extend the active period associated with the DRX cycle when control information from either the base station or the second UE is received. Other aspects and features are also claimed and described.

Abstract: A method of wireless communication, by a first sidelink user equipment (UE), includes periodically receiving a set of sidelink beam failure detection reference signals (RSs) from a second sidelink UE. The method includes incrementing a beam failure detection (BFD) counter in response to one or more reference signals of the set of sidelink beam failure detection RSs having a received signal strength below a threshold. The first sidelink UE starts a beam failure detection timer in response to the reference signal(s) of the set of sidelink beam failure detection reference signals having the received signal strength below the threshold. Another method by a sidelink UE may periodically transmit a set of sidelink BFD RSs to another sidelink UE. The set of sidelink BFD RSs comprise one or more sidelink receive RSs. The sidelink UE configures the other sidelink UE with the sidelink receive BFD RSs.

Abstract: A scheme for beam training include methods, apparatuses, and computer readable media for establishing a communication link with a second user equipment (UE), transmitting first information associated with first beam configurations of the first UE to the second UE, receiving second information associated with second beam configurations of the second UE from the second UE, and performing a beam training process by transmitting a number of reference signals to the second UE, wherein the number is derived from the first information associated with the first beam configurations and the second information associated with the second beam configurations.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a transmit power control (TPC) command that is based at least in part on a scheduled transmission of a sidelink communication. The UE may determine, based at least in part on refraining from transmitting the sidelink communication or transmitting the sidelink communication at a power that is lower than a power configured for the scheduled transmission of the sidelink communication, whether to adjust a transmit power of the UE based at least in part on the TPC command. The UE may selectively adjust the transmit power of the UE based at least in part on determining whether to adjust the transmit power. 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 select a first resource, of a plurality of resources, for transmission of a request to initiate a beam failure recovery procedure. The UE may determine that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resource and is to be transmitted using the first resource. The UE may select a second resource for transmission of the request to initiate the beam failure recovery procedure based at least in part on the determination that the other transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure and is to be transmitted using the first resource. Numerous other aspects are provided.

Abstract: To facilitate SL dormancy, methods, apparatuses, and computer program products are provided. An example method of a UE includes monitoring for SCI in a first CC and refraining from monitoring for the SCI in a second CC, the first CC corresponding to a non-dormant CC, the second CC corresponding to a dormant CC. The method further includes receiving, from a second UE, the SCI in the first CC. The method further includes receiving, from the second UE, a PSSCH in the first CC or the second CC.

Abstract: Apparatus, methods, and computer-readable media for facilitating a flush indicator for uplink transmissions and sidelink transmissions are disclosed herein. An example method for wireless communication at a UE includes transmitting a first transmission of one or more code blocks to a first device. Additionally, the example method includes retransmitting, to the first device, at least one code block of the one or more CBs. Further, the example method includes transmitting, to the first device, a flush indicator indicating to avoid combining a prior transmission of the at least one code block with the retransmission of the at least one code block.

Abstract: Method and apparatus for enhanced inter-UE coordination. The apparatus transmits, to a second UE, an IUC request for an IUC message indicating preferred resources or non-preferred resources for transmission of a signal by a third UE. The apparatus receives, from the second UE, the IUC message indicating the preferred resources or the non-preferred resources for the transmission of the signal by the third UE. The apparatus may select transmission resources for the third UE based at least on the IUC message from the second UE indicating the preferred resources or the non-preferred resources for transmission by the third UE.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication over a sidelink between a first user equipment (UE) and a second UE. The first UE may receive, from a base station, a sidelink resource configuration indicating physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) occasions on which to monitor a PSCCH for a grant from a second UE. The first UE may determine an active time for monitoring the PSCCH based on a discontinuous reception (DRX) mode for a link with the base station, the DRX mode including an active state in which a physical downlink control channel (PDCCH) is monitored and an inactive state in which the PDCCH is not monitored. The first UE may monitor the PSCCH during one or more of the PSCCH/PSSCH occasions that coincide with the active time.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter user equipment (UE) may identify a plurality of beams that are configured for transmitting one or more sidelink communications via one or more sidelink resources. The UE may transmit sidelink control information that indicates to reserve the one or more sidelink resources and that includes an explicit beam indication or a beam hopping indication associated with the plurality of beams. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a beam based at least in part on using at least a first antenna panel. The UE may transmit a rank indicator and UE assistance information (UAI), the UAI comprising a self-interference metric associated with operating in a full duplex mode based at least in part on using the at least first antenna panel. Numerous other aspects are described.