Network Signaling for Radio Resource Management Enhancement in High Speed Train (HST) Scenarios

    公开(公告)号:US20230189012A1

    公开(公告)日:2023-06-15

    申请号:US17437787

    申请日:2021-04-01

    Applicant: Apple Inc.

    CPC classification number: H04W16/18 H04W4/44

    Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

    Improved Secondary Cell Activation Mechanism in the New Radio Unlicensed Spectrum

    公开(公告)号:US20220417990A1

    公开(公告)日:2022-12-29

    申请号:US17437784

    申请日:2021-03-31

    Applicant: Apple Inc.

    Abstract: An apparatus may receive a media access control (MAC) control element (CE) from a base station (BS) indicating a secondary cell (SCell) to be activated in an unlicensed band. The apparatus may initiate a timer with an end value in response to receiving the MAC CE and may further adjust a radio-frequency (RF) chain from a first state to a second state corresponding to the SCell to be activated. The apparatus may determine, based on measurements of one or more synchronization signal blocks (SSBs) transmitted from the BS indicating one or more listen before talk (LBT) failures corresponding to the SCell, one or more failed SSB transmissions corresponding to the SCell. Accordingly, the apparatus may readjust, in response to expiry of the timer, the RF chain from the second state to the first state and receive one or more additional SSBs in the first state.

    MECHANISM AND SIGNALING ON CORESET AND PUCCH RESOURCE GROUPING FOR MULTI-TRP OPERATION

    公开(公告)号:US20220159772A1

    公开(公告)日:2022-05-19

    申请号:US17440526

    申请日:2020-05-08

    Applicant: Apple Inc.

    Abstract: Systems, devices, and techniques for wireless communications based on one or more transmission configuration indicator (TCI) states are described. A described technique performed by a user equipment (UE) includes receiving a first downlink channel based on a current TCI state; receiving a physical downlink shared channel (PDSCH) in a first slot, the PDSCH carrying a radio resource control (RRC) activation command in the first slot, the RRC activation command indicating a switch to a target TCI state; waiting until an end of a switching period triggered by the RRC activation command to use the target TCI state, the switching period being based on a RRC processing delay; and receiving, based on the end of the switching period, a second downlink channel based on the target TCI state in a second slot.

    RRM Measurement Restriction on CLI Measurement

    公开(公告)号:US20220124533A1

    公开(公告)日:2022-04-21

    申请号:US17439767

    申请日:2020-06-12

    Applicant: Apple Inc.

    Abstract: Disclosed are methods, systems, apparatus, and computer programs for a coordination mechanism between a network and a user equipment (UE) that is configured to perform cross-link interference (CLI) measurements, In one aspect, a method includes generating a message that indicates a capability of a user equipment (UE) whether to support simultaneous reception of at least one N signal associated with cross-link interference (CLI) measurement and at least one signal associated with a serving cell or a neighbor C cell of the UE. The method further includes transmitting the message to an access node (AN).

    RRM measurement restriction on CLI measurement

    公开(公告)号:US12302159B2

    公开(公告)日:2025-05-13

    申请号:US18369104

    申请日:2023-09-15

    Applicant: Apple Inc.

    Abstract: Disclosed are methods, systems, apparatus, and computer programs for a coordination mechanism between a network and a user equipment (UE) that is configured to perform cross-link interference (CLI) measurements. In one aspect, a method includes generating a message that indicates a capability of a user equipment (UE) whether to support simultaneous reception of at least one signal associated with cross-link interference (CLI) measurement and at least one signal associated with a serving cell or a neighbor cell of the UE. The method further includes transmitting the message to an access node (AN).

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