Hybrid automatic repeat request feedback method and device and data receiving device

Abstract

The present disclosure relates to a HARQ feedback method and apparatus, a method and apparatus for determining data to be retransmitted, a data receiving device, a data sending device, and a computer-readable storage medium. The HARQ feedback method includes: grouping the carrier components CC according to a binding rule, the binding rule including the number of resource units included in the CCs that can be bound into a group; calculating parameter values ​​in each CC group; For HARQ codebooks with the same number of groups, the length of the HARQ codebook is determined by the parameter value in the corresponding CC group and the maximum number of resource units contained in a single CC in the corresponding CC group; the HARQ codebook is fed back to the data sender. In the embodiment of the present disclosure, by grouping the carrier component CCs according to the binding rules, calculating the parameter values ​​in each CC group, and generating the HARQ codebook with the same number of CC groups, the amount of feedback information is optimized, thereby reducing the number of amount of feedback.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, to a hybrid automatic repeat request (HARQ) feedback method and apparatus, a method and apparatus for determining data to be retransmitted, a data receiving device, a data sending device, and a computer-readable storage medium. Background technique [0002] With the development of communication technology, the fifth generation of mobile communication technology (5th Generation, 5G for short) has emerged. The current business types of 5G include at least Enhanced Mobile Broad Band (eMBB), Massive Machine Type Communication (mMTC), Ultra Reliable Low Latency Communication (Ultra Reliable Low Latency Communication, referred to as mMTC) URLLC) and other types. These services are both data services, but have different requirements for latency and reliability. For example, URLLC services are used in fields that require low latency, such as the Internet of Vehicles,...

AI Technical Summary

Problems solved by technology

[0004] In the future, it is possible that the number of CBGs of a TB in different CCs is not the same. For this situation, in related technologies, CCs with the same number of CBGs are combined to feed back a codebook (codebook) to reduce the number of feedback bits It is wasteful, but it needs to feed back multiple HARQ codebooks, and maintain many counters (Downlink Assignment Index, DAI for short) and total (total) DAI. If the number of CBGs under one TB increases to 32 in the future, then it needs To feed back 32 HARQ codebooks, it is necessary to record the position of each CC in the 32 codebooks, and the signaling overhead increases

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