METHOD FOR ENHANCED HARQ-ACK FEEDBACK IN WIRELESS COMMUNICATIONS

    公开(公告)号:US20240372654A1

    公开(公告)日:2024-11-07

    申请号:US18772978

    申请日:2024-07-15

    Applicant: Apple Inc.

    Abstract: Some embodiments include an apparatus, method, and computer program product for enhanced Hybrid Automatic Repeat Request (HARQ)-ACK in a fifth generation (5G) wireless communications system. A user equipment (UE) can receive, during a HARQ-ACK window, a semi-persistent scheduling (SPS) Physical Downlink Shared Channel (PDSCH) transmission or a Physical Downlink Control Channel (PDCCH) transmission corresponding to a SPS PDSCH release. The UE can generate a Hybrid Automatic Repeat Request (HARQ)-ACK information bit corresponding to the reception. The UE can be configured with an offset value, k, and a length, l, of the HARQ-ACK window associated with an uplink transmission slot n, of a Physical Uplink Control Channel (PUCCH) transmission, and determine a starting slot of the HARQ-ACK window as n-k. When a corresponding valid uplink transmission slot is not available, the UE can transmit the HARQ-ACK information bit in the uplink transmission slot n of the PUCCH transmission.

    Semi-static HARQ-ACK codebook for multi-PDSCH transmission

    公开(公告)号:US12137452B2

    公开(公告)日:2024-11-05

    申请号:US17593406

    申请日:2021-08-05

    Applicant: APPLE INC.

    Abstract: Systems and methods for using hybrid automatic repeat request acknowledgement (HARQ-ACK) codebooks to as part of acknowledgement/negative acknowledgement (ACK/NACK) signaling regarding multiple physical downlink shared channel (PDSCH) transmissions (also termed “multi-PDSCH”) scheduled by a single downlink control information (DCI) corresponding to multiple candidate PDSCH monitoring occasions are discussed herein. Rate matching indicators for one, multiple, or all of the PDSCHs of a scheduled multi-PDSCH are discussed. Effects of invalid symbol signaling, where one or more resources corresponding to a candidate PDSCH monitoring occasion corresponding to the DCI has been indicated for uplink (UL) use or not for DL use by a base station, are discussed. Effects of a bandwidth part change (in UL or downlink (DL)) occurring near or during the DCI, the multi-PDSCH, and a physical uplink control channel (PUCCH) containing the ACK/NACK signaling (e.g., containing or corresponding to all or part of the HARQ-ACK codebook) are discussed.

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