Methods for pathloss reference signal activation

    公开(公告)号:US11997509B2

    公开(公告)日:2024-05-28

    申请号:US17442983

    申请日:2021-01-14

    Applicant: Apple Inc.

    CPC classification number: H04W16/28 H04B17/328 H04L5/0051

    Abstract: Methods and systems to activate beams for beam switching based on measurements of a downlink reference signal that is QCL Type-D with a downlink pathloss reference signal are disclosed. A UE may measure and report to a base station the RSRP of the reference signal that is QCL Type-D with a target downlink pathloss reference signal. Based on the reported RSRP measurements, the base station may activate the target pathloss reference signal to command the UE to update the pathloss measurements of the target pathloss reference signal for uplink power control of a beam corresponding to the target pathloss reference signal. The UE may determine whether the target pathloss reference signal is considered known for uplink power control based on the timing relationship among the reception of the reference signal from the base station, the transmission of the RSRP measurement of the reference signal, and reception of the activation command.

    Methods of type 1 UL gap activation and deactivation in FR2

    公开(公告)号:US11974235B2

    公开(公告)日:2024-04-30

    申请号:US17593400

    申请日:2021-07-27

    Applicant: APPLE INC.

    CPC classification number: H04W52/365 H04W52/367

    Abstract: Activating an uplink (UL) gap at a base station may include decoding a user equipment (UE) UL gap capability report received from a UE. A radio resource control (RRC) UL gap configuration may be encoded for transmission to the UE. A power headroom report (PHR) medium access control (MAC) control element (CE) received from the UE may be decoded. The PHR MAC CE may include at least one of a P value or a power management maximum power reduction (P-MPR) value. Decoding the measurement information may include determining that the P value is equal to one or the P-MPR value is greater than zero. Based on determining that the P value is equal to one or the P-MPR value is greater than zero, the UL gap configuration may be implicitly activated.

    Transmission configuration indication (TCI) state and beam switching

    公开(公告)号:US11894903B2

    公开(公告)日:2024-02-06

    申请号:US17599930

    申请日:2020-03-30

    Applicant: Apple Inc.

    CPC classification number: H04B7/063

    Abstract: Techniques for changing a Transmission Configuration Indication (TCI) state by a user equipment (UE) operating in a wireless communications system are provided. The UE receives a first message including a TCI state change command from a network and determines, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE. Based on the determination, the UE calculates a time delay of the UE to be prepared to receive a reference signal with the new TCI state, generates a second message indicating the time delay of the UE for the new TCI state, and transmits the second message to the network.

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