SYSTEMS AND METHODS FOR BEAM FAILURE RECOVERY ENHANCEMENT

    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.

    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

    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.

    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.

    CSI FEEDBACK FOR MULTI-PDSCH TRANSMISSION
    84.
    发明公开

    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.

    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.

    Configured Grant Operations for Multiple PUSCH

    公开(公告)号:US20230422273A1

    公开(公告)日:2023-12-28

    申请号:US18466451

    申请日:2023-09-13

    Applicant: Apple Inc.

    CPC classification number: H04W72/232 H04L1/1822 H04W72/1273 H04W72/11

    Abstract: A user equipment (UE) is configured to receive from a base station a semi-persistent scheduling (SPS) configuration for physical downlink shared channel (PDSCH) transmissions wherein multiple PDSCHs are transmitted within a single period of the SPS, the SPS configuration including a parameter for a number of hybrid automatic repeat request (HARQ) processes associated with the SPS configuration, receive from the base station a downlink control information (DCI) transmission for activating the SPS configuration, the DCI including a HARQ process ID for one of the PDSCH transmissions in the SPS configuration, wherein the UE determines a maximum number of PDSCH transmissions allowed within the single period based on the parameter for the number of HARQ processes associated with the SPS configuration, validate the DCI to determine time domain resources to use for the PDSCH transmission and receive from the base station the multiple PDSCH transmissions within the single SPS period.

    TRP-Specific PUSCH Transmissions for Multi-TRP Operation

    公开(公告)号:US20230422272A1

    公开(公告)日:2023-12-28

    申请号:US18462734

    申请日:2023-09-07

    Applicant: Apple Inc.

    CPC classification number: H04W72/232 H04W72/044 H04B7/0456

    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.

    DETERMINING PROCESSING TIME FOR HIGH FREQUENCY RANGE

    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.

    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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