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Hybrid automatic repeat request response method and device

A hybrid automatic retransmission and request-response technology, applied in transmission systems, digital transmission systems, and multiple use of transmission paths, which can solve the problem that network equipment and terminal equipment cannot communicate HARQ-ACK information.

Active Publication Date: 2021-06-04
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

[0008] This application proposes a hybrid automatic repeat request response method and device to solve the problem that the network device and the terminal device cannot communicate on the delayed transmission of HARQ-ACK information. In particular, the gNB and UE provided by the present invention determine "other" PUCCH / PUSCH resource technical solution to ensure that gNB and UE determine a consistent target channel

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  • Hybrid automatic repeat request response method and device

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[0052] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0053] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0054] figure 1 Schematic diagram of cancellation of HARQ-ACK feedback corresponding to PDSCH configured for SPS in TDD system. As shown in the figure, for example, the period of...

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Abstract

The invention discloses a hybrid automatic repeat request response method, which is used for delaying the transmission of HARQ-ACK when the HARQ-ACK feedback of a PDSCH (Physical Downlink Shared Channel) configured by SPS is cancelled due to a configuration conflict, and an original PUCCH (Physical Uplink Control Channel) where the cancelled HARQ-ACK is located is located in a basic time unit. The earliest alternative channel is used as a target channel to bear delay HARQ-ACK (hybrid automatic repeat request-acknowledgement); the alternative channel comprises at least one of a first type of alternative channel and a second type of alternative channel; the first type of alternative channel is a channel formed by sequentially taking continuous N1 alternative symbols starting from a first alternative symbol in the basic time unit or a subsequent time unit; the second alternative channel is at least one of the following channels in the basic time unit or the subsequent time unit: a PUCCH (Physical Uplink Control Channel) configured to be used for transmitting HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) and CSI (Channel State Information) of SPS (Space Point Scheduling) or a HARQ-ACK of a dynamic scheduling PDSCH (Physical Downlink Shared Channel), and a PUSCH (Physical Uplink Shared Channel) of semi-static scheduling. The invention further discloses equipment applying the method. According to the invention, the problem that the network equipment and the terminal equipment cannot communicate with each other according to the HARQ-ACK information which is transmitted in a delayed manner is solved.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a hybrid automatic repeat request response method and device. Background technique [0002] In the NR system, the hybrid automatic repeat request acknowledgment HARQ mechanism is used to improve the efficiency of data transmission. At the MAC layer, each cell has a HARQ entity, and the uplink and downlink are independent. Each HARQ entity includes multiple parallel HARQ processes. The terminal equipment UE instructs the physical layer to send acknowledgment ACK or non-acknowledgement NACK information according to the decoding result. ACK and NACK information are collectively referred to as hybrid automatic repeat request acknowledgment information HARQ-ACK. The whole of the HARQ-ACK information fed back by the UE on one HARQ feedback resource (PUCCH or PUSCH) is called a HARQ-ACK codebook. [0003] Semi-persistent scheduling (SPS) (Semi-Persistent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L5/00H04W72/04H04W72/12
CPCH04L1/1812H04L5/0055H04W72/0446H04W72/23
Inventor 闫志宇王志勤杜滢刘晓峰焦慧颖沈霞
Owner CHINA ACADEMY OF INFORMATION & COMM
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