Sidelink synchronization signal block designs for shared spectrum

    公开(公告)号:US12143828B2

    公开(公告)日:2024-11-12

    申请号:US17730969

    申请日:2022-04-27

    Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may perform a channel access procedure to gain access to a bandwidth part in a shared spectrum for sidelink communications with a second UE. The first UE may transmit a signal to the second UE using one or more sub-bands of the bandwidth part, and the signal may include one or more sidelink synchronization signal blocks (S-SSBs) multiplexed with frequency resources associated with a physical sidelink shared channel (PSSCH). The one or more S-SSBs may be transmitted using a set of symbol periods of a transmission time interval (TTI) (e.g., a slot) that are preceded by a least four initial symbol periods of the TTI. In some examples, the first UE may transmit a sidelink control information (SCI) message indicating which of the one or more sub-bands include the one or more S-SSBs.

    Precoded phase tracking reference signal sequence with distributed allocation

    公开(公告)号:US12137017B2

    公开(公告)日:2024-11-05

    申请号:US17727378

    申请日:2022-04-22

    Abstract: Methods, systems, and devices for wireless communications are described. A device may precode a phase tracking reference signal (PTRS) sequence by applying a single discrete Fourier transform (DFT) to the PTRS sequence. The device may map the DFT precoded PTRS sequence to a subset of resources of a set of resources, and may transmit a signal carrying the DFT precoded PTRS sequence. Additionally or alternatively, the device may receive a signal that includes a DFT precoded PTRS sequence, demap the DFT precoded PTRS sequence to a subset of resources of a set of resources, decode the DFT precoded PTRS by applying a single inverse DFT (IDFT) to the DFT precoded PTRS sequence, estimate a phase error based on the decoding, and apply a phase error correction to a set of additional symbols associated with the signal based on the estimated phase error.

    Scheduling for sidelink communications

    公开(公告)号:US12108382B2

    公开(公告)日:2024-10-01

    申请号:US17450828

    申请日:2021-10-13

    CPC classification number: H04W72/1263 H04W72/20

    Abstract: Certain aspects of the present disclosure provide techniques for communicating and scheduling communications over sidelink. Certain aspects of the disclosure relate to a method for wireless communication by a user equipment (UE). In some examples, the method includes transmitting, to one or more other UEs, first control information comprising an indicator of a starting time and a duration of a first time interval for communication of a first data transmission over a sidelink, wherein the first time interval comprises one or more time periods of a first time window. In some examples, the method includes transmitting the first data transmission to at least one of the one or more other UEs during the first time interval.

    Dynamic group common physical control channel

    公开(公告)号:US12096432B2

    公开(公告)日:2024-09-17

    申请号:US17473674

    申请日:2021-09-13

    CPC classification number: H04W72/20 H04W28/06

    Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a configuration message indicating a group common control resource allocated to a set of UEs that includes the UE, identifying a hashing function assigned to the UE for detecting control messaging communicated via the group common control resource that is addressed to the UE, receiving, via the group common control resource, a control message indicating addressing data and a bitmap, and processing the addressing data using the hashing function and the bitmap to determine applicability of the control message to the UE.

    TECHNIQUES FOR COMMUNICATING UPLINK TRAFFIC VIA CONFIGURED GRANT PERIODS WITH MULTIPLE SHARED CHANNEL OCCASIONS

    公开(公告)号:US20240276484A1

    公开(公告)日:2024-08-15

    申请号:US18168411

    申请日:2023-02-13

    Inventor: Huilin Xu Jing Sun

    CPC classification number: H04W72/1268

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) and a network entity may support one or more mechanisms according to which the UE and the network entity may avoid glitches in latency-sensitive traffic and reduce ambiguity relating to scheduling and resource use expectations for configured grant (CG) periods including multiple shared channel occasions. Such mechanisms may include a rule according to which the UE and the network entity expect spans of shared channel occasions within different CG periods to avoid overlapping in time. The rule may preclude any time domain overlapping between spans of shared channel occasions within different CG periods or may allow for a time domain overlapping between spans of shared channel occasions within different CG periods and instead indicate how a UE is expected to use shared channel occasions of overlapping spans of shared channel occasions.

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