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Data retransmission method and device, and computer-readable storage medium

A technology for data retransmission and retransmission, applied in the direction of digital transmission system, transmission system, multiple use of transmission paths, etc., can solve problems such as resource waste, and achieve the goal of ensuring utilization efficiency, improving resource utilization rate, and ensuring the effect of retransmission. Effect

Active Publication Date: 2022-02-08
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A technical problem to be solved by the embodiments of the present disclosure is the waste of resources caused by the hybrid automatic retransmission technology of TB granularity

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  • Data retransmission method and device, and computer-readable storage medium
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  • Data retransmission method and device, and computer-readable storage medium

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure.

[0050] The symbols of some embodiments of the present disclosure are as follows:

[0051] A TB contains several CBs, and each CB is recorded as a CB cbi , where cbi=1, 2, 3, . . . m.

[0052] The number of CBG (Code Block Group, coding block group) contained in TB is known, and each CBG is recorded as CBG cbgi , where cbgi=1 2 3...n.

[0053] A CBG consists of several CBs, and the number of CBs included in each CBG may be different, and the number of CBs in a CBG may be zero. The number of CBs contained in a CBG represents the size of the CBG.

[0054] During the initial transmission, the receiving side marks the CBG's ACK (indicating successful reception) or NACK (indicating unsuccessful reception) according to the reception status of each CBG. When the base station need...

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Abstract

The disclosure proposes a data retransmission method and device and a computer-readable storage medium, which relate to the field of wireless communication. The method includes: according to the first coding block group CBG used for retransmission, allocating the second CBG set that needs to be retransmitted for the transmission resource corresponding to the first CBG; according to the priority information of the second CBG that needs to be retransmitted, from In the second CBG set that needs to be retransmitted, the second CBG to be retransmitted on the transmission resource corresponding to the first CBG is determined. The data retransmission scheme based on coded block group CBG has smaller retransmission granularity than TB, which can improve the resource utilization rate in the process of data retransmission.

Description

technical field [0001] The present disclosure relates to the field of wireless communication, and in particular to a data retransmission method and device, and a computer-readable storage medium. Background technique [0002] In the 5G (fifth generation) wireless transmission system, due to the significant improvement in spectral efficiency and the significant increase in bandwidth, the size of the transmission block (Transmission Block, TB) will also be significantly increased. In this case, the number of code blocks (Code Block, CB) included in each TB will also increase significantly. [0003] During the retransmission process, a Hybrid Automatic Repeat request (HARQ) marks the retransmission based on the TB. Therefore, for a TB containing several CBs, even if only one or some CBs in the TB have an error, all the CBs of the entire TB will be retransmitted, resulting in a large waste of resources. Contents of the invention [0004] A technical problem to be solved by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L5/00
CPCH04L1/1887H04L5/0055
Inventor 赵嵩杨蓓
Owner CHINA TELECOM CORP LTD