Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more control messages from a network entity that include a sub-band index and a parameter associated with a quantity of random access (RA) occasions. The UE may transmit an RA message to the network entity via an RA occasion of a specific sub-band based on the sub-band index and the parameter. The UE may receive, from the network entity, a random access response (RAR) message that is associated with the index of the sub-band, the RA occasion, or both. In some examples, the RAR message may be associated with a sub-band based on including the sub-band index, the parameter, or both in one or more portions of the RAR message.

Abstract: Techniques for reconfigurable intelligent surface (RIS)-assisted calibration for timing errors in wireless nodes may comprise obtaining a set of wireless reference signal measurements comprising: first, second, third, and fourth measurements of reference signals traveling between the mobile device, a first wireless node, and a second wireless node, wherein a portion of the reference signals are reflected by the RIS while traveling between the mobile device and the first or second wireless node. A differential value comprising a difference between the third measurement and the fourth measurement is also obtained. Determining a position estimate of the mobile device may then be performed, based at least in part on the set of wireless reference signal measurements, the differential value, and a respective location of each of the first wireless node, the second wireless node, and the RIS.

Abstract: A user equipment (UE) receives information for a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), where the PDCCH/PDSCH are broadcast or group-cast from a base station and have a quasi co-location relationship with a synchronization signal/PBCH (SSB) block or a channel state information reference signal (CSI-RS) beam. The UE monitors for or receives the PDCCH/PDSCH based on at least one of a search space (SS) set configuration enhancement for the PDCCH, a demodulation reference signal (DM-RS) resource configuration enhancement for the PDCCH or the PDSCH, or a scrambling identifier set enhancement for payload bits of the PDCCH or the PDSCH, which support the spatial division multiplexing (SDM) with another PDCCH/PDSCH that are broadcast or group-cast from the same base station and have the quasi co-location relationship with a different SSB block or a different CSI-RS beam.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may configure a set of energy harvesting classes associated with performing a four-step random access channel (RACH) procedure. The network node may perform the four-step RACH procedure based at least in part on an energy harvesting class of the set of energy harvesting classes. 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 configuration information that includes parameters associated with multiple energy harvesting (EH) classes. The UE may select an EH class, from among the multiple EH classes, based at least in part on the configuration information and an EH state of the UE. The UE may perform a 2-step random access channel (RACH) procedure based at least in part on the EH class. Numerous other aspects are described.

Abstract: Method and apparatus for flexible spectrum integration associated with virtual cells. The apparatus receives a virtual cell configuration for a virtual cell based on an aggregation of a plurality of non-contiguous frequency resources. The apparatus transmits, to a network entity, an indication of support for at least one capability associated with FSI for virtual cells. The apparatus switches to a target BWP of the virtual cell. The apparatus communicates, with the virtual cell in the target BWP. The apparatus may receive a switch command to switch to the target BWP of the virtual cell, where a switching time is independent of a number of non-contiguous frequency sub-bands comprised in the target BWP. The apparatus may transmit an ACK of the switch command to switch to the target BWP of the virtual cell.

Abstract: Certain aspects of the present disclosure provide techniques for controlling access and use of network resources and services by user equipment based on user equipment capabilities. In one aspect, a method for wireless communication by a network entity, includes: receiving, from a user equipment, a request to connect to a network, the request comprising a user equipment identifier and a reduced capability indication; determining a validity of the reduced capability indication based on at least one of: subscription data associated with the user equipment; or one or more capabilities associated with the user equipment; and making a connection decision based on the validity of the reduced capability indication.

Abstract: Methods, systems, and devices for wireless communications are described. A synchronization signal block (SSB) may be dynamically scheduled within an operating bandwidth of a user equipment (UE), where the operating bandwidth of the UE is outside of a frequency resource in which a cell defining SSB (CD-SSB) is scheduled. For example, a UE may operate in a reduced capability mode or an enhanced reduced capability mode where the UE may operate in a narrower bandwidth than the serving cell bandwidth. Control signaling may dynamically configure an SSB for the UE within the operating bandwidth of the UE. The UE may monitor for the non-cell defining SSB (NCD-SSB) and skip monitoring for the CD-SSB based on the dynamically configured NCD-SSB. For example, a reduced capability UE or an enhanced reduced capability UE may monitor for the NCD-SSB without performing RF retuning between receiving the control signaling and monitoring for the NCD-SSB.

Abstract: Aspects described herein relate to reporting out-of-synchronization on a downlink (DL) to a network entity by transmitting, to the network entity based on comparing a difference between the downlink timing measurement of the signal and a previous downlink timing measurement of a previous signal to a threshold, a report indicating an out-of-synchronization status for DL. In an example, a network entity receiving this report can transmit a response signal to cause the device reporting the out-of-synchronization to correct DL timing or perform a random access procedure.

Abstract: Some techniques and apparatuses described herein provide an indication of a result of decoding a two-step random access channel (RACH) message and an action to be performed by a user equipment (UE). For example, some techniques and apparatuses described herein may provide the indication using a UE contention resolution identity-based approach, wherein the contention resolution identity of the UE may be provided in a random access response. Some techniques and apparatuses described herein may use a fallback indicator that indicates the result of decoding and/or the action to be performed. Some techniques and apparatuses described herein may use a random access response (RAR) subheader that selectively omits a random access preamble identifier based at least in part on the result of decoding and/or the action to be performed.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit uplink data to a base station in a configured grant small data transfer (CG-SDT) occasion in a CG-SDT occasion group associated with multiple UEs. The UE may receive a group common physical downlink control channel (GC-PDCCH) multiplexing CG-SDT feedback targeted to the multiple UEs associated with the CG-SDT occasion group. In some aspects, the CG-SDT feedback multiplexed in the GC-PDCCH includes CG-SDT feedback for the uplink data transmitted in the CG-SDT occasion. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to multi-slot transmission time interval based channel state information (CSI) and uplink shared channel (UL-SCH) multiplexing. In some aspects, a user equipment (UE) may receive a downlink control information (DCI) message and determine, based at least in part on the DCI message, a schedule for multiplexing UL-SCH data and one or more components of uplink control information (UCI) in a plurality of slots on a physical uplink shared channel (PUSCH). The components may include a CSI report for a plurality of transmission reception points. The UE may multiplex the UL-SCH data and the one or more components into the plurality of slots based at least in part on the schedule. 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, from a base station, an indication that a cell associated with the base station does not support reduced capability UEs, wherein the UE is capable of operating in a first mode that is associated with reduced capability UEs and a second mode that is not associated with reduced capability UEs. The UE may communicate, in the second mode, with the base station to establish a connection with the cell based at least in part on at least one of: the UE supporting one or more capabilities associated with connecting with the cell, or no cells that support reduced capability UEs being available. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability report to a base station indicating a triggering offset. The base station may configure the UE with one or more channel state information (CSI) measurement resources and send downlink control information (DCI) that triggers an aperiodic CSI report for some of the CSI measurement resources. The UE may report CSI by measuring the CSI resources after the triggering offset. In some cases, CSI reporting related to the different codebook types (e. g., Type I, Type II) may be modified, where after identifying a type of codebook and determining which type of codebook to process (e. g., based on a number of CSI processing units), the UE may identify a priority associated with different CSI reports. The UE may be configured with various parameters that relax or modify the processing of Type II CSI reports.

Abstract: Aspects described herein relate to configuring and selecting preamble and payload occasions for performing two-step random access procedures. Configurations on preamble occasions, payload occasions, association pattern between the occasions and synchronization signal block (SSB) beams, and the rules for selecting preamble and payload occasions for random access message transmission can be determined by the network and signaled to user equipment (UE). Based on the configurations and rules, UE can measure the link level quality and select possible preamble and payload occasions for one or more SSB beams achieving a threshold signal quality. Sets of one or more preamble occasions and one or more payload occasions can be further determined based on whether the preamble and payload occasion(s) can achieve a threshold transmission latency. The one or more preamble occasions and one or more payload occasions can be used to transmit random access messages in the two-step random access procedure.

Abstract: A method for wireless communication at a UE and related apparatus are provided. In the method, the UE configures a pair of unrestricted BWPs for communication with a network entity. The pair of unrestricted BWPs includes an unrestricted UL BWP and an unrestricted DL BWP. The UE further performs, based on at least one of the unrestricted UL BWP or the unrestricted DL BWP, a BWP operation for the communication with the network entity. The BWP operation includes one or more of a BWP switch or an SDT with the network entity.

Abstract: Wireless communications systems and methods related to the timing arrangements and the transmission gap configurations in 2-step random access channel (RACH) procedures to improve system latency and reliability of a RACH HARQ process are provided. The UE transmits a first message including a random access preamble and a payload, and then monitors for a second message in response to the first message during a random access response (RAR) window. In response to determining that no second message is received by the UE from the BS or a back off indicator is received within the RAR window, the UE re-transmits the preamble and payload of the first message after the RAR window lapses. In response to determining if the second message received within the RAR window carries a FallbackRAR or SuccessRAR, the UE then determines to re-transmit the payload of the first message based on the FallbackRAR, or to transmit an acknowledgement message based on the SuccessRAR.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of time alignment timer (TAT) relaxation criteria for one or more time alignment timers at the UE. The UE may transmit a request or a status report for TAT relaxation based on satisfying the time alignment timer relaxation criteria. The UE may receive an indication of TAT relaxation parameters in response to the request or status report. The UE may apply the TAT relaxation parameters to perform fewer measurements and transmit fewer measurement reports for uplink transmission. In some cases, reduced physical downlink control channel (PDCCH) monitoring occasions and extended discontinuous reception (DRX) can be jointly configured with the relaxation of TATs for the UE.

Abstract: A UE may obtain an indication of an FD capability of a network node, the indication of the FD capability of the network node indicating that the network node supports an FD mode, and transmit, during an initial access procedure, an indication of an FD capability of the UE to the network node. The network node may transmit an indication of an FD capability of the network node to a UE, the indication of the FD capability of the network node indicating that the network node supports an FD mode, obtain an indication of an FD capability of the UE during an initial access procedure, and configure one or more resources for the UE based on the FD capability of the UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block (SSB) burst set that includes a plurality of SSBs, a majority of the SSBs in the SSB burst set having an SSB symbol and a corresponding physical broadcast channel (PBCH) symbol that is located a fixed number of symbols from the SSB symbol. The UE may obtain a location of the PBCH symbol based at least in part on the fixed number of symbols. Numerous other aspects are described.