Abstract: Apparatus, methods, and computer-readable media for facilitating phase jump estimation for SL DMRS bundling are disclosed herein. An example method includes receiving, from another device, first information at a first symbol of a first slot, the first slot including at least the first symbol and a first reference signal. The example method also includes receiving second information at a second symbol of a second slot, the second slot including at least the second symbol and a second reference signal, the first information and the second information being repetitions. The example method also includes generating a first reference signal copy based at least on the second reference signal and a phase jump between the first slot and the second slot. Additionally, the example method includes performing channel estimation across the first slot and the second slot based on an aggregation of the first reference signal and the first reference signal copy.

Abstract: Aspects of the present disclosure provide techniques for configuring device-to-device (D2D) communication in new radio (NR) for one or more user equipments (UEs). Specifically, features of the present disclosure provide techniques for initial beam-pairing for sidelink communication that optimize communication resources (e.g., resource pools) by indicating the direction of traffic (e.g., transmit or receive) during the initial beam-pairing procedure and to establish sidelink communication without the need for scheduling request transmissions between the UEs.

Abstract: Methods, systems, and devices for user equipment (UE) device-to-device sidelink wireless communications with transmit power adjustments provided through transmit power control requests. A group of UEs may use sidelink groupcast transmissions for communications, and a sidelink groupcast transmitter may increase or decrease transmission power of the groupcast transmissions for more efficient and reliable transmissions. Each UE that receives groupcast transmissions from the sidelink groupcast transmitter may have a different set of wireless resources that may be used to transmit a transmit power control indication to request higher or lower transmit power at the transmitting UE. Alternatively, wireless resources for providing the transmit power indications may be separately provided for TPC-UP indications and for TPC-DOWN indications.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect beam failure on a secondary cell (SCell), wherein the UE is configured with a primary cell (PCell) and the SCell for carrier aggregation with a base station; identify one or more resources for transmission of a beam failure recovery request based at least in part on detecting the beam failure, wherein the one or more resources are on one or more SCells configured for the UE; and transmit the beam failure recovery request to the base station using the one or more resources. 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 sidelink configuration that indicates a set of sidelink slots comprising a first subset of sidelink slots to be used for first transmissions of sidelink communications and a second subset of sidelink slots to be used for second transmissions of the sidelink communications. The UE may communicate based at least in part on the sidelink configuration. Numerous other aspects are described.

Abstract: The present disclosure includes a method, apparatus, and computer readable medium for wireless communications for determining, at a first node, first beam orientation information for a second node to select one or more beams for beam training with a third node, determining, at the first node, second beam orientation information for the third node to select one or more of beams for beam training with the second node, transmitting, to the second node, the first beam orientation information, and transmitting, to the third node, the second beam orientation information.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication. A user equipment (UE) may determine, based on a sidelink resource configuration from a base station, a physical sidelink control/shared channel (PSCCH/PSSCH) occasion to monitor for a sidelink transmission from a second UE. The UE may receive, during the PSCCH/PSSCH occasion, a signal indicative of a sidelink discontinuous reception (DRX) command. The UE may determine to stop monitoring the PSCCH for the PSCCH/PSSCH occasion in response to the sidelink DRX command.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may measure a per-beam channel busy ratio (CBR) for each of one or more beams configured on the sidelink receiver for transmitting or receiving sidelink transmissions including a first CBR for a first beam that is to be used for receiving a sidelink transmission transmitted by a first sidelink transmitter; and may transmit an indication of the per-beam CBR. In some aspects, a user equipment may receive information associated with a per-beam CBR including a first CBR for a first beam to be used by a sidelink receiver for receiving a sidelink transmission transmitted by the sidelink transmitter, and may selectively transmit the sidelink transmission for reception by the sidelink transmitter using the first beam based at least in part on the indication of the per-beam CBR. Numerous other aspects are provided.

Abstract: A user equipment (UE) transmits capability information to a base station indicating a first number of active transmission configuration indication (TCI) states or active spatial relations supported by the UE per group of bandwidth parts (BWPs) or per group of component carriers (CCs) for use in receiving control information or data. The UE receives, from the base station, a configuration of a second number of active TCI states or active spatial relations for the group of BWPs or the group of CCs that is limited to be less than or equal to the first number of active TCI states or active spatial relations supported by the UE. The UE monitors for downlink communication based on the second number of active TCI states. The UE uses the active spatial relations for uplink transmissions.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit, and a user equipment (UE) may receive, radio resource control (RRC) signaling configuring a list of sidelink transmission configuration indication (TCI) states. The UE may communicate on one or more sidelink channels using one or more sidelink TCI states included in the list of sidelink TCI states configured in the RRC signaling. Numerous other aspects are described.

Abstract: A first UE may receive, from a base station or a second UE, one or more first TCI states via RRC signaling. The first UE may receive, from the base station or the second UE, one or more MAC-CEs. Each of the one or more MAC-CEs may include at least one indication of one or more second TCI states. The one or more second TCI states may be a subset of the one or more first TCI states. The first UE may transmit to the second UE, or receive from the second UE, a sidelink message via a sidelink channel based on a third TCI state. The third TCI state may be from the one or more second TCI states.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to cell recovery techniques. One example method generally includes receiving, on a first cell, an indication that one or more channel measurements are to be reported for a second cell for which beam failure is detected; transmitting a first message triggering reporting of at least one preferred beam for communicating on the second cell, the first cell being different from the second cell, wherein the first message is transmitted in response to the indication that the one or more channel measurements are to be reported; receiving a report indicating the at least one preferred beam; and configuring a transmission configuration state in accordance with the at least one preferred beam for communicating on the second cell.

Abstract: In some implementations, a user equipment (UE) may transmit, to a second UE, sidelink configuration information indicating one or more transmission configuration indicator (TCI) states for at least one sidelink channel between the first UE and the second UE.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for indicating a sidelink configuration for synchronization signal transmission. For example, a user equipment (UE) may establish an access link with a base station or transmission/reception point. The UE may measure a plurality of beams of the access link or of a sidelink channel to generate a signal metric of the access link or of the sidelink channel. Based on the generated signal metric, the UE may identify a sidelink configuration for synchronization signal transmission within the sidelink channel. In some cases, the UE may transmit a synchronization signal via the sidelink channel based at least in part on the sidelink configuration.

Abstract: The present disclosure provides signaling for multi-panel user equipment (MPUE) activation and deactivation status. The MPUE may include a plurality of panels. The MPUE may determine a number of active panels. The MPUE may transmit a status message indicating at least the number of active panels to a base station. The base station may schedule a communication with the UE for at least one panel of the number of active panels. The MPUE may receive from the base station, a downlink control information (DCI) scheduling a communication for at least one of the number of active panels. The MPUE may communicate according to the DCI using the at least one panel scheduled by the DCI. In another aspect, the MPUE may indicate a nominal number of active panels and implicitly manage a mapping of panel identifiers to an actual number of active panels.

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a first user equipment (UE) may receive a control message from a second UE indicating resources that are reserved for communications between the first UE and the second UE. The first UE may transmit a first control message and a second control message for reassurance of the reserved resources. The first UE may transmit a first control message for reservation reassurance, and the first control message may indicate a resource configuration for a second control message for reservation reassurance. The first UE may transmit an indication of the reserved resources, resource reservation reassurance information, or both via the second control message. A third UE may receive the first and second control messages and may refrain from communicating on the reserved resources based on the indication.

Abstract: A user equipment (UE) may receive, from at least one of a base station or a configuring UE, a configuration of a plurality of sidelink power control parameter sets, a media access control (MAC) control element (CE) (MAC-CE) activating transmission configuration indicator (TCI) states and indicating sidelink power control parameter sets, and control information indicating a TCI state and a sidelink power control parameter set. The UE may transmit the sidelink communication in a direction based on the TCI state and with a transmission power indicated in the control information. The MAC-CE may include a joint MAC-CE or separate MAC-CEs to update or configuration of the sidelink TCI and the power control parameters.

Abstract: Methods, apparatuses, and computer-readable storage medium for SL communications are provided. An example method may include transmitting, to a second UE, a SL BWP switching request message requesting a switch from a first BWP to a second BWP. The example method may further include receiving, from the second UE, an SL BWP switching decision message confirming the switch from the first BWP to the second BWP. The example method may further include switching from the first BWP to the second BWP upon receiving the SL BWP switching decision message. The example method may further include transmitting, to the second UE, an SL BWP switching confirmation message confirming the switch from the first BWP to the second BWP. The example method may further include reverting back to the first BWP.

Abstract: Certain aspects of the present disclosure provide techniques for priority-based transmit power control. A method that may be performed by a user equipment (UE) includes communicating with at least a second UE via a link, determining a transmission power for transmitting information via the link based, at least in part, on a priority corresponding to the information, and outputting the information for transmission via the link in accordance with the determined transmission power.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may transmit, to a receiving device, an identification of a subset of code block groups (CBGs) of a set of CBGs, wherein the set of CBGs comprises a transport block; and transmit, to the receiving device, an initial data transmission comprising the subset of CBGs. Numerous other aspects are provided.