Signaling-overhead reduction with resource grouping

    公开(公告)号:US12213121B2

    公开(公告)日:2025-01-28

    申请号:US16801672

    申请日:2020-02-26

    Abstract: A configuration for configuring and updating the spatial relationship of multiple physical uplink control channel (PUCCH) resources in a single message, thereby reducing signaling overhead. A user equipment (UE) constructs a message associated with at least one of a plurality of component carriers (CCs) or a plurality of bandwidth parts (BWPs) indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The UE transmits the message to a base station. The base station transmits a message to the UE configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or a plurality of uplink/downlink resources.

    Joint precoding across multiple beams

    公开(公告)号:US12212390B2

    公开(公告)日:2025-01-28

    申请号:US17758488

    申请日:2020-02-14

    Abstract: One innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication. The method includes determining a configuration of reference signal (RS) resources to be used by a user-equipment (UE) to perform beam measurements, transmitting, to the UE, an indication of the configuration of the RS resources, and receiving, from the UE, a report indicating a plurality of RS resource indicators based on the beam measurements, each of the RS resource indicators being associated with one of the RS resources. In some aspects, the BS selects a subset of the RS resources based on the report from the UE, transmits, to the UE, an indication to provide channel measurement information for the subset of the RS resources, and receives a report including the channel measurement information from the UE. The BS may also perform joint precoding of signals for transmission via the RS resources based on the channel measurement information.

    Frequency pre-compensation for high-speed train single frequency networks

    公开(公告)号:US12119863B2

    公开(公告)日:2024-10-15

    申请号:US18334446

    申请日:2023-06-14

    CPC classification number: H04B1/62 H04L5/0048 H04W24/08 H04W72/23

    Abstract: Wireless communication devices, systems, and methods related to mechanisms for transmitting and receiving reference signals in a high-speed train (HST) single frequency network (SFN). A base station (BS) determines a first frequency pre-compensation value for a reference signal transmitted via a first transmission and reception point (TRP) and a second frequency pre-compensation value for a reference signal via a second TRP. The BS notifies a user equipment (UE) of the first and second pre-compensation values through at least one of the TRPs. The BS applies the first pre-compensation value to the reference signal via the first TRP and the second pre-compensation value to the reference signal via the second TRP. The UE adjusts its tracking loop for the reference signal based on the pre-compensation values, reducing estimation and/or search overhead at the UE.

    AUTONOMOUS UPLINK BEAM SELECTION AND ACTIVATION

    公开(公告)号:US20240250737A1

    公开(公告)日:2024-07-25

    申请号:US18159661

    申请日:2023-01-25

    CPC classification number: H04B7/0695 H04W72/20

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first message activating a plurality of transmission configuration indicator (TCI) states for the UE for uplink communications. The UE may receive a second message that indicates, for uplink communications by the UE, a first TCI state of the plurality of TCI states and that indicates an activation of an uplink beam selection procedure for autonomous selection of an uplink beam by the UE, and may transmit an uplink message using a second TCI state different from the first TCI state, the second TCI state selected by the UE based on the uplink beam selection procedure. In some examples, the UE transmit a request for the activation of the uplink beam selection procedure by the UE.

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