Methods and apparatus for flexible aperiodic SRS transmission

    公开(公告)号:US12185290B2

    公开(公告)日:2024-12-31

    申请号:US18654714

    申请日:2024-05-03

    Abstract: Method, apparatus, and systems for flexible aperiodic reference signal (RS) transmissions are provided. For example, a method implemented in a wireless transmit/receive unit (WTRU) for wireless communications comprises receiving configuration information of one or more sounding reference signal (SRS) resource sets, each SRS resource set of the one or more SRS resource sets is associated with a slot offset and a set of slot offset deltas; receiving downlink control information (DCI) indicating an SRS request, the SRS request indicates an SRS resource set of the one or more SRS resource sets; determining an SRS configuration from a set of SRS configurations for SRS transmissions; determining a slot for transmitting an SRS based on the determined SRS configuration; and transmitting, in the determined slot, the SRS using resources of the indicated SRS resource set.

    Radio (NR) vehicle to vehicle (V2X)—methods for scheduling sidelink in unlicensed spectrum

    公开(公告)号:US12160892B2

    公开(公告)日:2024-12-03

    申请号:US18640110

    申请日:2024-04-19

    Abstract: Methods and apparatuses for scheduling sidelink communications in unlicensed spectrum are disclosed. A method performed by a first wireless transmit/receive unit (WTRU) may comprise: obtaining a grant for transmission on a sidelink (SL); receiving, from a second WTRU or an additional WTRU, a transmission that includes first channel occupancy time (COT) information; on a condition that the grant is for transmission on the SL during a COT associated with the second WTRU or an additional WTRU, determining, from a transmission received from the second WTRU, the additional WTRU, or both the second and the additional WTRU, cast information; performing a listen before talk (LBT) procedure using a set of parameters associated with information received from the second WTRU or additional WTRU; and on a condition that the LBT procedure is successful, transmitting, based on the determined cast information, data that includes second COT information.

    Methods and apparatus for power-efficient positioning in wireless communication systems

    公开(公告)号:US12150083B1

    公开(公告)日:2024-11-19

    申请号:US18770033

    申请日:2024-07-11

    Abstract: Method, apparatus, and systems for determining and transmitting positioning information in a wireless communication network are provided. For example, a method for wireless communications comprises receiving configuration information related to a set of positioning configurations and a small data transmission (SDT), determining, based on the configuration information, that at least one positioning configuration of the set of positioning configurations satisfies a positioning requirement and is associated with a payload size being less than a data volume threshold (DVT) associated with the SDT, selecting, from the at least one positioning configuration, a positioning configuration associated with a payload size being closest to the DVT, performing a positioning measurement based on the selected positioning configuration, and sending, using an uplink resource for the SDT, a measurement report based on the selected positioning configuration and the positioning measurement.

    Methods for power saving sensing and resource allocation

    公开(公告)号:US12302245B2

    公开(公告)日:2025-05-13

    申请号:US17799294

    申请日:2021-02-12

    Abstract: A first wireless transmit/receive unit (WTRU) may receive, from a second WTRU, sidelink control information (SCI), including first information indicating if a resource is reserved by the second WTRU, and second information indicating if the second WTRU is a power saving or non-power saving. The first WTRU may measure a reference signal receive power (RSRP) of signals transmitted by the second WTRU. The first WTRU may add a resource to a set of available resources if the first information indicates that the resource is not reserved by the second WTRU. If a resource is reserved, the WTRU may set an RSRP threshold to a first set or second threshold based on a power saving mode of the second WTRU. The first WTRU may add the resource to the set of available resources if the measured RSRP is less than the selected RSRP threshold.

    SIDELINK INTER-WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) COORDINATION

    公开(公告)号:US20250089083A1

    公开(公告)日:2025-03-13

    申请号:US18954654

    申请日:2024-11-21

    Abstract: Methods, apparatus, systems, architectures, and interfaces for a wireless transmit receive unit (WTRU) performing sidelink communications are provided. A method may include any of: receiving SL transmission configuration information indicating: (1) a dedicated resource allocation for assistance transmissions, and (2) triggering conditions for performing an assistance transmission; on condition that: (i) a physical SL shared channel (PSSCH) transmission is received, by the WTRU from another WTRU, according to a semi-persistent reservation, and (ii) one or more of the triggering conditions for performing the assistance transmission has occurred: (a) performing sensing based on sensing parameters associated with the received PSSCH transmission, and (b) selecting a dedicated resource allocation according to a resource of the received PSSCH transmission; and transmitting, to any number of proximate WTRUs, an assistance transmission using the selected dedicated resource allocation, the assistance transmission including assistance information associated with the sensing performed by the WTRU.

    Transmission handling for PCI satellite switching

    公开(公告)号:US12219417B1

    公开(公告)日:2025-02-04

    申请号:US18760104

    申请日:2024-07-01

    Abstract: A wireless transmit/receive unit (WTRU) may comprise a processor. The processor may be configured to receive (e.g., via broadcast) configuration information indicating a time that a same-PCI satellite switch may occur. In one or more examples, the WTRU may transmit assistance information prior to the same-PCI satellite switch. The assistance information may, for example, include a re-synchronization duration, capabilities to synchronization procedures, and/or a time indication for resuming TX and/or RX. The WTRU may receive configuration information for satellite re-synchronization. The WTRU may perform the same-PCI satellite switch to the second satellite, for example, based on the configuration information indicating the time for the same-PCI satellite switch. In performing the same-PCI satellite switch, the WTRU may start a resynchronization gap, suspend UL TX and/or DL RX, and/or perform re-synchronization procedure(s).

    METHODS, ARCHITECTURES, APPARATUSES AND SYSTEMS FOR SIDELINK BEAM MANAGEMENT

    公开(公告)号:US20240421876A1

    公开(公告)日:2024-12-19

    申请号:US18706507

    申请日:2022-11-01

    Abstract: Beam management may be coordinated by a centralized coordinating entity, e.g., by a gNB, that configures and schedules Channel State Information Reference Signal, CSI-RS, transmissions for beam measurement and reporting. This centralized coordinating entity may not be available for Wireless Transmit-Receive Units, WTRUs, in a SideLink, SL, mode of operation, where resource allocation is performed by WTRUs in a distributed manner. WTRU procedures for establishing and updating an SL TCI state association are disclosed, including determining a spatial domain filter to use for an SL transmission. In these WTRU procedures, a WTRU may perform CSI-RS transmissions in an SL slot, e.g., multiplexed with a PSCCH/PSSCH transmission. The WTRU may receive, in reply, CSI reporting information comprising a spatial domain filter. For further SL TB transmissions for the SL, the WTRU may use the spatial domain filter.

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