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

Abstract

The present disclosure relates to a HARQ feedback method and device, a method and device for determining data to be retransmitted, a data receiving device, a data transmitting device, and a computer readable storage medium. The HARQ feedback method includes: grouping a carrier unit CC according to a binding rule, wherein the binding rule includes the number of resource units included in a CC thatcan be bound into a group; calculating a parameter value in each CC group; generating a HARQ codebook with the same number as the CC groups, wherein the length of the HARQ codebook is determined by the parameter value in the corresponding CC group and the maximum resource unit number included in a single CC in the corresponding CC group; and feeding the HARQ codebook back to a data transmitting end. In the embodiment of the present disclosure, by grouping the carrier units CC according to the binding rule, calculating the parameter value in each CC group, and generating the HARQ codebook having the same number of CC groups, the amount of feedback information is optimized, and the amount of feedback information is reduced.

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 device, a method and device 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) appears. The current business types of 5G include at least enhanced Mobile Broadband (eMBB for short), massive Machine Type Communication (mMTC for short), and Ultra Reliable Low Latency Communication (Ultra Reliable Low Latency Communication for short). URLLC) and many other types. These services are all data services, but they have different requirements for latency and reliability. For example, URLLC services are used in fields that require low latency, such as Internet of Ve...

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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