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    Dynamic Configuration of Aperiodic Sounding Reference Signal Offsets in Cellular Communications Systems
    71.
    发明申请
    Dynamic Configuration of Aperiodic Sounding Reference Signal Offsets in Cellular Communications Systems 有权

    公开(公告)号：US20220303088A1

    公开(公告)日：2022-09-22

    申请号：US17439059

    申请日：2020-10-12

    Applicant: Apple Inc.

    Inventor： Haitong Sun ,  Yushu Zhang ,  Huaning Niu ,  Hong He ,  Wei Zeng ,  Chunxuan Ye ,  Oghenekome Oteri ,  Sigen Ye ,  Dawei Zhang ,  Jie Cui ,  Yang Tang

    IPC: H04L5/00 ,  H04L41/0803 ,  H04W72/04

    Abstract: A cellular base station (BS) which determines an aperiodic sounding reference signal (SRS) triggering offset configuration specifying an offset between an aperiodic SRS trigger received by a user equipment (UE) and transmission of the SRS by the UE. The cellular base station may determine that the SRS triggering offset should be adjusted. In response, the cellular base station may transmit signaling to the UE specifying a new value for the aperiodic SRS triggering offset. The new SRS triggering offset value may be partly based on a minimum timing offset for the UE and may be contained in a medium access control (MAC) control element (CE) or in downlink control information (DCI). Additionally, the new triggering offset value may be applicable for a plurality of component carriers or bandwidth parts. The cellular base station may also determine a new triggering offset value due to conflicts regarding the AP-SRS transmission.

    Cross-Cell Beam Failure Recovery
    72.
    发明申请
    Cross-Cell Beam Failure Recovery 有权

    公开(公告)号：US20220302986A1

    公开(公告)日：2022-09-22

    申请号：US17442108

    申请日：2020-08-04

    Applicant: Apple Inc.

    Inventor： Wei Zeng ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Oghenekome Oteri ,  Weidong Yang ,  Sigen Ye ,  Chunxuan Ye ,  Chunhai Yao ,  Jie Cui ,  Yang Tang ,  Yushu Zhang

    IPC: H04B7/06 ,  H04W76/19 ,  H04W24/08 ,  H04W74/08 ,  H04W56/00

    Abstract: This disclosure relates to performing beam failure recovery during an inter-cell connection involving a UE in communication with one or more base stations in a cellular communication system. In various embodiments, a user equipment determines one or more beam failures by monitoring one or more reference signals transmitted by one or more base stations, where the UE is connected to the one or more base stations. The UE further performs candidate beam detection by monitoring at least one candidate reference signal that is transmitted by one or more candidate base stations, where at least one candidate base station (a first candidate base station) is different from the one or more base stations to which the UE was previously communicating. The UE selects the first candidate base station based on the candidate beam detection, and transmits a beam failure recovery request (BFRQ) message to the first candidate base station based on the selection.

    Beam Failure Recovery for User Equipment Communicating with Multiple Transmission and Reception Points
    74.
    发明申请
    Beam Failure Recovery for User Equipment Communicating with Multiple Transmission and Reception Points 有权

    公开(公告)号：US20220271887A1

    公开(公告)日：2022-08-25

    申请号：US17438912

    申请日：2021-01-13

    Applicant: Apple Inc.

    Inventor： Yushu Zhang ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Huaning Niu ,  Oghenekome Oteri ,  Seyed Ali Akbar Fakoorian ,  Sigen Ye ,  Wei Zeng

    IPC: H04L5/00

    Abstract: A user equipment (UE) may establish communication with a plurality of transmission reception points (TRPs) and determine one or more beam failures associated with a first or second TRP based on reference signals received from the first and second TRPs. The UE may then transmit a scheduling request requesting resources for indicating the beam failures associated with the first TRP or second TRPs. Upon receiving a response to the scheduling request allocating resources, the UE may then transmit, using allocated resources, a beam failure indication of the first one or more beam failures associated with the first TRP or second TRP. After receiving a beam failure response from the first or second TRP, the UE may then communicate with the first TRP and the second TRP using one or more new beams based on the beam failure indication and the beam failure response.

    Mechanisms for indicating beam directions
    75.
    发明授权
    Mechanisms for indicating beam directions 有权

    公开(公告)号：US12262349B2

    公开(公告)日：2025-03-25

    申请号：US17438044

    申请日：2020-10-15

    Applicant: Apple Inc.

    Inventor： Sigen Ye ,  Oghenekome Oteri ,  Haitong Sun ,  Yushu Zhang ,  Weidong Yang ,  Wei Zeng ,  Huaning Niu ,  Chunxuan Ye ,  Hong He ,  Chunhai Yao ,  Dawei Zhang

    IPC: H04W72/02 ,  H04W16/28 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/23

    Abstract: A base station may transmit beam indication information to one or more user equipment (UE) devices. For each of a plurality of time units (e.g., symbols) in a time interval (e.g., spanning one or more slots), the beam indication information indicates a corresponding beam that the base station will use to transmit or receive. A UE device may have knowledge of the beam in which it currently resides, e.g., by performing power measurements during a beam scan procedure. Thus, the beam indication information enables the UE to perform transmissions and/or receptions (e.g., configured transmissions and/or receptions) during the appropriate time unit(s). The beam indication information may be dynamically transmitted as part of downlink control information. This transmission may omni-directional, wide beam, or narrow beam. Various schemes of encoding the beam indication information are contemplated.

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