Abstract: Methods, systems, and devices for wireless communications are described for cell access techniques in carrier aggregation configurations in which one or more carriers do not provide discovery signals such as synchronization signal block (SSB) transmissions. A UE may be configured with an anchor carrier on which SSBs are transmitted, and one or more non-anchor carriers on which SSBs are not transmitted. A single cell barring indication may be provided for the anchor carrier, in which case the UE may follow cell barring indications for associated non-anchor carriers. In other cases, separate cell barring indications may be provided for one or more anchor carriers and one or more non-anchor carriers.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive, from a base station, an indication of a set of resources for transmitting a set of phase-coherent sounding reference signals (SRSs). The UE may receive, from the base station, a control message indicating a cancellation of an allocation of a first portion of the set of resources. The UE may determine a phase coherency configuration associated with a second portion of the set of resources based on receiving the control message indicating the cancellation. The UE may then be configured to transmit one or more SRSs within the second portion of the set of resources in accordance with the determined phase coherency configuration.

Abstract: A signal processing method includes: receiving, at a UE, a PRS and a supplemental signal, the supplemental signal being a broadcast signal and spanning a first frequency range at least partially outside of a second frequency range spanned by the PRS; processing, at the UE, the PRS and the supplemental signal in combination, resulting in an effective signal bandwidth that is larger than the second frequency range, to determine position information; and at least one of: transmitting a capability message, from the UE to a network entity, indicating a processing capability of the UE to process, in combination, the PRS and the supplemental signal; or transmitting a signal-combination indication, from the UE to the network entity, indicating that the UE processed the PRS and the supplemental signal in combination to determine the position information.

Abstract: Fallback procedures for user equipments (UEs) are described that provide efficient fallback to a four-step random access procedure from a two-step random access procedure. For example, after transmitting a first message of a two-step random access procedure, a UE may start a fallback timer or counter and monitor for a second message of the two-step random access procedure for the duration of the fallback timer or counter. At the expiration of the fallback timer or counter, the UE may fall back to a four-step random access procedure. In some cases, the UE may transmit multiple repetitions of the first message and monitor for responses after transmitting the repetitions or after each repetition. Additionally, or alternatively, the base station may transmit an explicit signal to the UE that may signal to the UE to perform a fallback procedure at a beginning or middle of a random access procedure.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a configuration of a channel state information (CSI) report including multiple codebooks, wherein each codebook, of the multiple codebooks, is associated with a corresponding antenna port configuration. The UE may compute at least one CSI processing parameter based at least in part on the configuration of the CSI report. Numerous other aspects are described.

Abstract: Wireless positioning accuracy of a user equipment (UE) is impacted by locations of the transmit/receive points (TRPs) and UE for wireless positioning. To improve the accuracy of estimated locations, a geometric dilution of precision (GDOP) may be determined for different groups of candidate TRPs, with the GDOP indicating a potential positioning error associated with the group of candidate TRPs. A UE may determine GDOPs for different combinations of candidate TRPs. One or more devices of a wireless network (e.g., a location server and/or a UE for positioning) may select or exclude one or more candidate TRPs from being used for wireless positioning of a UE based on the determined GDOPs. Exclusion or selection of candidate TRPs for wireless positioning may also be based on quality measurements of PRSs (such as an RSRP or SNR) or a time duration associated with measuring the PRSs from the candidate TRPs to be selected.

Abstract: Certain aspects of the present disclosure provide techniques for prioritizing overlapping or near overlapping uplink transmissions for a source base station (BS) and a target BS during a make-before-break handover of a user equipment (UE) from the source BS to the target BS.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a system information block (SIB) that indicates a selected set of message repetition numbers from a plurality of sets of message repetition numbers. The UE may receive, from the base station, a bit field in a random access response (RAR) or downlink control information (DCI) that indicates a selected message repetition number from the selected set of message repetition numbers indicated in the SIB. The UE may transmit, to the base station, a message during a random access procedure based at least in part on the selected message repetition number. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may identify that a band is associated with a first numerology and a second numerology for synchronization, and/or perform a synchronization scan to identify a synchronization signal block using stored data, wherein the stored data includes data regarding a plurality of frequency locations of the band, and wherein the synchronization scan is performed with regard to a first set of frequency locations, of the plurality of frequency locations, associated with the first numerology, and wherein the synchronization scan is performed with regard to a second set of frequency locations, of the plurality of frequency locations, associated with the second numerology, wherein the second set of frequency locations includes a proper subset of frequency locations of the plurality of frequency locations. Numerous other aspects are provided.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for bandwidth part (BWP) dynamic adaptation in accordance with an energy level at a user equipment (UE). In some systems, the UE may implement techniques for power savings by operating according to a narrower BWP in accordance with an energy level at the UE. In some implementations, the UE may reduce the bandwidth size of the active BWP if the UE energy level satisfies a threshold. The UE may transmit signaling to the network indicating that the bandwidth size of the active BWP is reduced. Additionally, or alternatively, the UE may fall back to a default BWP if the UE energy level satisfies a threshold. For example, the UE may fall back to the default BWP prior to expiration of a timer configured to trigger the UE to fall back to the default BWP.

Abstract: Generally, the described techniques provide for duplex mode configuration for control information (e.g., duplex mode configuration for communication of downlink control information). For example, duplex modes may be defined (e.g., as full duplex (FD) capable, FD only, half duplex (HD) only, etc.), and such duplex modes may be configured for control resource sets (CORESETs), search space (SS) sets, or both. In some examples, duplex modes configured for a CORESET/SS set may depend on the priority of information conveyed via the CORESET/SS set. For example, a CORESET/SS set for high priority or critical control information may be configured with a HD mode to avoid FD self-interference, while CORESET/SS set for other control information may be configured with a FD mode to improve spectrum efficiency. Techniques for resolving conflicting duplex mode configurations (e.g., when a HD mode is configured for a SS set within a CORESET configured with FD) are also described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message that indicates a first initial uplink bandwidth part for use by the UE in communications with a network entity, the message also indicating a plurality of random access occasions, at least one of the plurality of random access occasions being in frequency resources that are outside of the first initial uplink bandwidth part. The UE may select a random access occasion of the plurality of random access occasions for transmission of a random access preamble from the UE to the network entity. The UE may transmit, as part of a random access procedure, the random access preamble within the random access occasion.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication to be performed by a user equipment (UE), comprising receiving, from a base station, a synchronization signal block (SSB) via a reconfigurable intelligent surface (RIS), the SSB corresponding to a first SSB type configured for RIS-assisted procedures. The implementations further include performing, with the base station according to the SSB, a random access channel (RACH) procedure. Additionally, the implementations further include transmitting, to the base station according to the SSB, an indication that the SSB corresponds to the first SSB type as part of the RACH procedure.

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a user equipment (UE), including receiving, from a network entity, default bandwidth part (BWP) configuration information for a plurality of modes of operation of the network entity, the plurality of modes comprising a first mode and a second mode, and the default BWP configuration information indicating a first default BWP for the first mode and a second default BWP for the second mode; receiving, from the network entity, a mode indication indicating the network entity is operating in the first mode; and communicating with the network entity using the first default BWP based on receiving the mode indication and based on expiration of an inactivity timer.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a source base station associated with a source master cell group (MCG), a physical uplink shared channel (PUSCH) repetition in one or more slots of the source MCG during a handover of the UE from the source MCG to a target MCG. The UE may perform, to a target base station associated with the target MCG, an uplink transmission in one or more slots to the target MCG during the handover, wherein PUSCH repetitions associated with the source MCG that overlap in time with the uplink transmission to MCG are canceled and a counting of the PUSCH repetitions is based at least in part on slots of the source MCG associated with canceled PUSCH repetitions. Numerous other aspects are described.

Abstract: Aspects of the disclosure relate to communicating uplink control information. In an aspect, a first device receives from a second device configuration information including an indication to transmit uplink control information via a primary component carrier (PCC) or a given secondary component carrier (SCC) of at least one SCC in a slot. The first device also receives from the second device mapping information indicating an enabled spatial relation information configured for the PCC or the given SCC for transmitting the uplink control information. Thereafter, the first device identifies the enabled spatial relation information from the mapping information and transmits to the second device the uplink control information on the PCC or the given SCC in the slot based on the indication included in the configuration information, the enabled spatial relation information, and an uplink resource mapped to the enabled spatial relation information.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, signaling indicating a channel state information (CSI) report configuration. The CSI report configuration may indicate a mapping between one or more CSI reference signal (CSI-RS) resources for use in a dormancy state for one or more secondary cells and at least one antenna panel configuration of the base station. Based on the configuration, the UE may receive one or more CSI-RSs on the CSI-RS resources of the one or more dormant secondary cells. In some cases, the UE may receive an antenna adaptation indication based on monitoring a downlink control channel. Additionally or alternatively, the UE may receive scheduling information for a downlink shared channel containing an antenna adaptation indication. The UE may transmit a message reporting CSI feedback to the base station in accordance with the antenna adaptation indication.

Abstract: Wireless communications systems and methods related to bandwidth-efficient utilization of peak reduction tone resource are provided. An example method of wireless communications performed by a user equipment (UE) includes receiving, from a base station in a first subband, a resource allocation indicating a set of transmission tones comprising a set of first data tones, a set of second data tones and a set of peak reduction tones (PRTs). The resource allocation can indicate the set of first data tones overlaps at least a portion of the set of PRTs at respective locations of a set of PRT locations and the set of second data tones is arranged at a set of data tone locations within a particular bandwidth. The UE can communicate, with the base station in a second subband, a data transmission using an outgoing waveform based at least in part on the resource allocation.

Abstract: An apparatus may be configured to receive an indication activating a set of periodic resources in a plurality of CCs for a HARQ codebook, identify information associated with a set of canceled HARQ bits, select at least one CC in the plurality of CCs for transmitting the information associated with a HARQ bit in the set of canceled HARQ bits, and transmit the information associated with the set of canceled HARQ bits to a network node via the at least one CC. The apparatus may be configured to transmit an indication activating a set of periodic resources in a plurality of CCs for a HARQ codebook and receive information associated with a set of canceled HARQ bits from a network node (e.g., a UE) via at least one CC in the plurality of CCs.

Abstract: Techniques are provided for reducing the bandwidth required to receive reference signals with a user equipment (UE). An example method for positioning reference signal bandwidth adaptation includes determining a target accuracy, determining a positioning reference signal bandwidth based on the target accuracy, and transmitting a positioning reference signal based on the positioning reference signal bandwidth.