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    SYSTEMS AND METHODS FOR BEAM FAILURE RECOVERY ENHANCEMENT
    111.
    发明公开
    SYSTEMS AND METHODS FOR BEAM FAILURE RECOVERY ENHANCEMENT 审中-公开

    公开(公告)号：US20240056160A1

    公开(公告)日：2024-02-15

    申请号：US18494962

    申请日：2023-10-26

    Applicant: APPLE INC.

    Inventor： Yushu ZHANG ,  Chunxuan YE ,  Dawei ZHANG ,  Haitong SUN ,  Hong HE ,  Huaning NIU ,  Seyed Ali Akbar FAKOORIAN ,  Sigen YE ,  Wei ZENG

    IPC: H04B7/06 ,  H04W76/18

    CPC classification number: H04B7/06964 ,  H04W76/18

    Abstract: Systems and methods for beam failure recovery (BFR) are disclosed herein. A user equipment (UE) receives downlink (DL) reference signal(s) on corresponding beam(s) from a base station. The UE performs beam failure detection (BFD) on such beams used for user data to determine whether a beam failure has occurred, and candidate beam detection (CBD) on such beams not used for user data to identify candidate beams for recovering from the beam failure. The BFD and the CBD are based on both uplink (UL) channel performance considerations and DL channel performance considerations, as determined using the DL reference signal(s), such that a beam failure may be determined in the UL, the DL, or both, and a candidate beam may be identified for UL, DL, or both. The UE sends a beam failure recovery request BFRQ with this information to the base station, and the system changes beams accordingly.

    UPLINK TRANSMIT SWITCHING WITH MULTIPLE TIMING ADVANCE GROUPS
    112.
    发明公开
    UPLINK TRANSMIT SWITCHING WITH MULTIPLE TIMING ADVANCE GROUPS 审中-公开

    公开(公告)号：US20240031967A1

    公开(公告)日：2024-01-25

    申请号：US17813783

    申请日：2022-07-20

    Applicant: Apple Inc.

    Inventor： Ankit BHAMRI ,  Dawei ZHANG ,  Sigen YE ,  Wei ZENG ,  Yang TANG

    IPC: H04W56/00 ,  H04L5/00

    CPC classification number: H04W56/005 ,  H04L5/0092

    Abstract: This application relates to wireless communications, including methods and apparatus to manage uplink (UL) transmit switching with multiple timing advance groups (TAGs) for wireless devices. A wireless device is configured to use multiple carriers selected from a set of available carriers that can be associated with different TAGs. When a second set of carriers, used after switching from a first set of carriers, includes carriers that belong to different TAGs, the wireless device determines whether to transmit on one or more first uplink transmission occasions for each of the carriers in the second set of carriers based on whether a first UL transmission occasion for at least one carrier overlaps a switching gap time period. The wireless device can disallow transmission on first UL transmission occasions of one or more carriers to accommodate the overlap.

    MANAGING UPLINK TRANSMISSION WITH MULTIPLE TIMING ADVANCE GROUPS
    113.
    发明公开
    MANAGING UPLINK TRANSMISSION WITH MULTIPLE TIMING ADVANCE GROUPS 审中-公开

    公开(公告)号：US20240031962A1

    公开(公告)日：2024-01-25

    申请号：US17813792

    申请日：2022-07-20

    Applicant: Apple Inc.

    Inventor： Ankit BHAMRI ,  Dawei ZHANG ,  Sigen YE ,  Wei ZENG ,  Yang TANG

    IPC: H04W56/00

    CPC classification number: H04W56/0045 ,  H04W56/0005

    Abstract: This application relates to wireless communications, including methods and apparatus to manage uplink (UL) transmit switching with multiple timing advance groups (TAGs) for wireless devices. A wireless device is configured to select N≥2 radio frequency carriers for UL transmission from M>N available radio frequency carriers and subsequently send UL transmissions to a cellular wireless network based on the configuration. The M available radio frequency carriers are divided into distinct TAGs, each TAG having a distinct timing advance value, and the N radio frequency carriers belong to a single TAG. The wireless device is further configured to switch to a second set of N UL radio frequency carriers, after an uplink switching gap time period, based on a TAG medium access control (MAC) control element (CE), received the cellular wireless network, which specifies a second TAG from which to select the second set of N UL radio frequency carriers.

    CSI FEEDBACK FOR MULTI-PDSCH TRANSMISSION
    115.
    发明公开
    CSI FEEDBACK FOR MULTI-PDSCH TRANSMISSION 审中-公开

    公开(公告)号：US20240030986A1

    公开(公告)日：2024-01-25

    申请号：US17442083

    申请日：2021-08-05

    Applicant: Apple Inc.

    Inventor： Oghenekome OTERI ,  Wei ZENG ,  Dawei ZHANG ,  Seyed Ali Akbar FAKOORIAN ,  Weidong YANG ,  Sigen YE ,  Chunhai YAO ,  Yushu ZHANG ,  Chunxuan YE ,  Hong HE ,  Haitong SUN

    IPC: H04B7/06

    CPC classification number: H04B7/0632 ,  H04B7/0626

    Abstract: Some embodiments include an apparatus, method, and computer program product for implementing Channel State information (CSI) feedback for multi-Physical Downlink Shared Channel (PDSCH) transmissions in a wireless communication system. Some embodiments enable a user equipment (UE) to determine Channel Quality Indicators (CQI) and/or Precoding Matrix Indicators (PMI) for multi-PDSCH transmissions that account for effects of a duration of the multi-PDSCH transmission including the maximum interval between the first and last PDSCH transmissions on the CQI and PMI determinations. Some embodiments include a base station that detects a need for a change in a beam direction and adjusts the beam direction accordingly based on the PMI determinations. Some embodiments enable a desired hybrid automatic repeat request (HARQ)-ACK feedback transmission from a single multi-PDSCH transmission. Some embodiments include performing HARQ bundling with an update to the Type 1 HARQ-ACK codebook based on the multi-PDSCH transmission.

    DETERMINING PROCESSING TIME FOR HIGH FREQUENCY RANGE
    118.
    发明公开
    DETERMINING PROCESSING TIME FOR HIGH FREQUENCY RANGE 审中-公开

    公开(公告)号：US20230362914A1

    公开(公告)日：2023-11-09

    申请号：US17440615

    申请日：2021-01-14

    Applicant: Apple Inc.

    Inventor： Hong HE ,  Dawei ZHANG ,  Oghenekome OTERI ,  Chunxuan YE ,  Seyed Ali Akbar FAKOORIAN ,  Chunhai YAO ,  Yushu ZHANG ,  Wei ZENG ,  Sigen YE

    IPC: H04W72/1263 ,  H04W72/51

    CPC classification number: H04W72/1263 ,  H04W72/51

    Abstract: Some embodiments include an apparatus, method, and computer program product for facilitating processing times in a 5G wireless communications system. When operating at higher frequency subcarrier spacing (SCS), slot times for receiving and/or transmitting data between user equipment (UE) and a 5G Node B (gNB) become shorter. Because of this, some UE may face difficulty in processing physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH), and/or physical downlink control channel (PDCCH) data with sufficient speed. To address potential limitations, a flexible minimum processing time may be used to accommodate different UE processing capabilities. The UE may report its processing capabilities to the gNB. The gNB may then schedule communications according to the UE’s processing capabilities. The gNB may consider whether the UE implements a single or multiple processing engines. Further, the gNB may apply single-slot and/or multi-slot scheduling techniques to also prevent timing issues.

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