Sidelink HARQ

By constructing and managing side link HARQ-ACK codebooks in user equipment (UEs) and directly transmitting HARQ feedback without PUCCH resources, the problem of low HARQ feedback processing between UEs in the prior art is solved, and more efficient and reliable side link communication is achieved.

CN119835784APending Publication Date: 2025-04-15APPLE INC
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Patent Information

Application Number
CN202510014634.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2021-02-03
Filing Date
2021-02-10
Publication Date
2025-04-15

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Abstract

The invention relates to a sidelink HARQ. A user equipment (UE) communicates with a further UE via a sidelink and with a cell of a network via an uplink. The UE receives a hybrid automatic repeat request (HARQ) acknowledgement (ACK) timing parameter from a network; generating a sidelink HARQ-ACK codebook based on a signaling exchange with a further UE, wherein the sidelink HARQ-ACK codebook is constructed in a decreasing order of one or more physical sidelink shared channel (PSSCH) transmission slots associated with a configured physical sidelink feedback channel (PSFCH) occasion; and transmitting an indication of the side link HARQ-ACK codebook to the cell of the network.
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