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    Multi-TRP Beam Indication Using TCI State
    293.
    发明公开
    Multi-TRP Beam Indication Using TCI State 审中-公开

    公开(公告)号：US20240072869A1

    公开(公告)日：2024-02-29

    申请号：US17754575

    申请日：2021-04-06

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Chunxuan YE ,  Dawei ZHANG ,  Haitong SUN ,  Hong HE ,  Huaning NIU ,  Oghenekome OTERI ,  Wei ZENG ,  Weidong YANG

    IPC: H04B7/06 ,  H04L5/00 ,  H04W72/232

    CPC classification number: H04B7/0695 ,  H04L5/0048 ,  H04L5/0053 ,  H04W72/232

    Abstract: A user equipment (UE) is configured to configured to use multiple beams for transmission or reception. The UE receives, from a base station, at least one medium access control (MAC) control element (CE) that indicates multiple activated transmission configuration indicator (TCI) states, receives, from the base station, at least one downlink control information (DCI) indicating a subset of TCI states of the multiple activated TCI states, wherein the MAC CE and the DCI are part of a TCI configuration, and wherein the subset of TCI states corresponds to multiple transmission and reception points (TRPs) of a wireless network, maps the subset of TCI states to the corresponding multiple TRPs based on the TCI configuration and selects a beam used for transmission or reception based on one mapped TCI state of the mapped subset of TCI states.

    SYSTEMS AND METHODS FOR BEAM FAILURE RECOVERY ENHANCEMENT
    296.
    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.

    TRP-Specific PUSCH Transmissions for Multi-TRP Operation
    297.
    发明公开
    TRP-Specific PUSCH Transmissions for Multi-TRP Operation 审中-公开

    公开(公告)号：US20240048320A1

    公开(公告)日：2024-02-08

    申请号：US17754460

    申请日：2021-04-06

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Dawei ZHANG ,  Huaning NIU ,  Oghenekome OTERI ,  Seyed Ali Akbar FAKOORIAN ,  Wei ZENG ,  Weidong YANG ,  Yushu ZHANG

    IPC: H04L5/00 ,  H04W72/232

    CPC classification number: H04L5/0051 ,  H04W72/232

    Abstract: A user equipment (UE) is configured to communicate with one or more transmission and reception points (TRPs). The UE receives a sounding reference signal (SRS) resource set configuration including a first resource set corresponding to a first transmission and reception point (TRP) and a second resource set corresponding to a second TRP, receives a downlink control information (DCI) transmission including an SRS resource indicator (SRI) indicating (i) which resource from the first resource set should be selected for a first physical uplink shared channel (PUSCH) transmission to a first TRP, and (ii) which resource from the second resource set should be selected for a second PUSCH transmission to a second TRP and transmits the first PUSCH transmission to the first TRP and the second PUSCH transmission to the second TRP.

    UNIFIED RANDOM ACCESS (RA) DESIGN FOR MULTIPLE FEATURES BACKGROUND
    298.
    发明公开
    UNIFIED RANDOM ACCESS (RA) DESIGN FOR MULTIPLE FEATURES BACKGROUND 审中-公开

    公开(公告)号：US20240032102A1

    公开(公告)日：2024-01-25

    申请号：US17441150

    申请日：2021-07-23

    Applicant: Apple Inc.

    Inventor： Fangli XU ,  Yuqin CHEN ,  Yushu ZHANG ,  Chunhai YAO ,  Haijing HU ,  Wei ZENG ,  Dawei ZHANG

    IPC: H04W74/08

    CPC classification number: H04W74/0833

    Abstract: Some aspects of this disclosure relate to apparatuses and methods for implementing unified RACH for multiple features. For example, some aspects of this disclosure relate to a method including determining, by a user equipment (UE), a feature to be indicated at an initial access of the UE to a base station and determining whether the UE and the base station support feature specific random access (RA) procedure for the feature. The method further includes determining whether a condition for the feature is satisfied in response to determining that both the UE and the base station support the feature specific RA procedure for the feature. In response to determining that the condition is satisfied, the method includes selecting a feature specific Random Access Channel (RACH) resource and perform a 4-step RA procedure or a 2-step RA procedure based on the selected feature specific RACH resource.

    UPLINK TRANSMIT SWITCHING WITH MULTIPLE TIMING ADVANCE GROUPS
    299.
    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
    300.
    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.

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