HARQ retransmission method and device and transmission device

A retransmission device and retransmission technology, applied in the field of communication, can solve problems such as missing, high frame error rate, HARQ repetition, etc., and achieve the effects of reducing frame error rate, optimizing decoding performance, and reducing repetition

Active Publication Date: 2019-02-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a HARQ retransmission method, device and sending equipment to solve the problems in the prior art of HARQ retransmission such as serious repetition and missing and high frame error rate

Method used

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  • HARQ retransmission method and device and transmission device
  • HARQ retransmission method and device and transmission device
  • HARQ retransmission method and device and transmission device

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example 1

[0136] Assume that in the hybrid automatic repeat request HARQ retransmission method of the embodiment of the present invention, M is equal to 3, that is, there are 4 retransmission redundancy versions, offset is 0, α is 1, and each transmission is based on the initial transmission code rate R 0 , determine the transmission starting position of each retransmission redundant version by the following formula:

[0137]

[0138] Assuming that the simulation parameters of the LDPC code BG1 proposed by 5G as shown in the following Table 1 are used, the HARQ retransmission method of the embodiment of the present invention is applied, and the transmission start position of each retransmission redundant version is dynamically selected based on the above formula (4) ( S 0 , S 1 , S 2 , S 3 ), the obtained transmission diagram is as follows Figure 4a shown. However, the application of existing retransmission schemes gives a fixed transmission start position (S' 0 , S' 1 , S' ...

example 2

[0143] Assume that in the hybrid automatic repeat request HARQ retransmission method of the embodiment of the present invention, M is equal to 3, that is, there are 4 retransmission redundancy versions, offset is 0, α is 1, and each transmission is based on the initial transmission code rate R 0 , determine the transmission starting position of each retransmission redundant version by the following formula:

[0144]

[0145] Assuming that the simulation parameters of the LDPC code BG2 proposed by 5G as shown in the following Table 2 are used, the HARQ retransmission method of the embodiment of the present invention is applied, and the transmission start position of each retransmission redundant version is dynamically selected based on the above formula (4) ( S 0 , S 1 , S 2 , S 3 ), the obtained transmission diagram is as follows Figure 5a shown. However, the application of existing retransmission schemes gives a fixed transmission start position (S' 0 , S' 1 , S' ...

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Abstract

The invention provides an HARQ retransmission method and device and a transmission device, relates to the field of communication, and solves the problems in the prior art of the repetition and missingconditions of HARQ retransmission are severe and the frame error rate is high. The method includes the steps: determining a transmission parameter; dynamically selecting a transmission start positionof each retransmission redundancy version from a circular buffer according to the transmission parameter. The scheme of the invention is based on the retransmission of the dynamically selected transmission start position, which effectively reduces the occurrence of repetitions, missing conditions, etc., thereby reducing the frame error rate and optimizing the decoding performance.

Description

technical field [0001] The present invention relates to the communication field, in particular to a HARQ retransmission method, device and sending equipment. Background technique [0002] As 4G enters the stage of large-scale commercial use, the future-oriented fifth-generation mobile communication (5G) has become a global research and development hotspot. With the joint efforts of the global industry and academia, the 5G vision and key capability requirements have been basically clarified, and the formulation of international standards has officially started. HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) is one of the important technologies. [0003] In the existing 4G LTE-turbo HARQ, such as figure 2 As shown, its 4 redundant versions define 4 start points (S 0 , S 1 , S 2 , S 3 ), each time the transmission is initiated from a fixed starting point, but for the 5G LDPC (Low Density Parity Check, Low Density Parity Check) code, such a retrans...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/00
CPCH04L1/0063H04L1/1819H04L1/1867H04L1/189H04L1/00H04L1/18H04L1/1874
Inventor 张睿王加庆万飞白宝明孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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