Configuring Listen Before Talk and Short Control Signaling in Unlicensed Spectrum

    公开(公告)号:US20230337277A1

    公开(公告)日:2023-10-19

    申请号:US17438242

    申请日:2021-07-22

    Applicant: Apple Inc.

    CPC classification number: H04W74/0808

    Abstract: This disclosure relates to techniques for configuring listen before talk and short control signaling in unlicensed spectrum in a wireless communication system. A wireless device may establish a wireless link with a cellular base station on a cell in unlicensed spectrum. The wireless device may receive listen-before-talk configuration information, where the listen-before-talk configuration information indicates whether listen-before-talk is configured for the wireless link. The wireless device may receive short control signaling configuration information, where the short control signaling configuration information indicates whether short control signaling is enabled for one or more types of control signaling. The wireless device may perform short control signaling with the cellular base station on the wireless link when short control signaling is enabled. The short control signaling performed between the cellular base station and the wireless device may include either or both of uplink transmissions or downlink transmissions.

    UE Handling of Interlaced UL Cancellation Indication

    公开(公告)号:US20230217475A1

    公开(公告)日:2023-07-06

    申请号:US17593821

    申请日:2020-09-24

    Applicant: Apple Inc.

    CPC classification number: H04W72/53 H04W72/23

    Abstract: A method for wireless communication includes: requesting transmission, by a wireless device, of uplink (UL) transmissions to a wireless station; receiving, by the wireless device, a UL cancellation indication (CI) to be applied to a determined reference region; determining, by the wireless device, a set of UL resources for cancellation based on the UL CI received from the wireless station (e.g., by determining an indication of particular interlaces and/or particular Physical Resource Blocks within such interlaces that are to be canceled), wherein at least a subset of the UL resources for cancellation are interlaced; and canceling, by the wireless device, UL transmissions over at least the determined set of UL resources for cancellation (i.e., additional UL transmissions may be cancelled, too). The wireless device may then perform UL transmissions that do not overlap with the determined set of UL resources for cancellation in any UL CI to the wireless station.

    CONTROL INFORMATION FOR SMART REPEATER IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230217381A1

    公开(公告)日:2023-07-06

    申请号:US18049698

    申请日:2022-10-26

    Applicant: APPLE INC.

    CPC classification number: H04W56/001 H04W16/28 H04L5/1469

    Abstract: Systems and method for using control information to control the relay of signaling between a base station and a user equipment (UE) using a smart repeater (SMR) and/or reconfigurable intelligent surface (RIS) are disclosed herein. In embodiments, a first phase is used by the SMR with a first SS burst from a base station to identify a trained Rx beam to use with the base station, and a second phase receives a second SS burst from the base station and forwards it to a UE using a beam sweep such that the UE is enabled to provide feedback of one SSB of the second SS burst. In other embodiments, an SMR or an RIS is controlled to enable the use of an SS burst to perform a full check of all beam-wise routes between the base station and the UE, enabling feedback of a corresponding SSB selection by the UE.

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