Method for processing multi-device transparent HARQ

Abstract

The invention relates to a method for processing a multi-device transparent HARQ. The method includes the following steps that a count field of a VC frame in an AOS frame header comprises three bytes, a k bit in the field is used for indicting markers of decoding devices in a transparent HARQ decoding module, and when the serial numbers of AOS frames are determined and data frames arrive at a receiving end, the data frames are submitted to the determined decoding device in the transparent HARQ decoding module to be decoded; when a sender constructs the AOS frames, the serial numbers of the AOS frames are arranged in the count field of the VC frame in a filling mode; when a receiver receives the AOS frames, the corresponding decoding device in the transparent HARQ decoding module is selected according to the value of the k bit in the count field of the VC frame to conduct decoding, the VOS frames are submitted to an ordering module after being decoded successfully through the corresponding decoding device in the transparent HARQ decoding module, the AOS frames are submitted to an AOS protocol processing module in sequence, and AOS protocol receiving processing is conducted on the AOS frames. Under the condition that a frame format is not modified, indication of the multiple transparent HARQ decoding devices is achieved; the decoding efficiency is improved, the decoding success rate is increased, the AOS frame retransmission frequency is reduced, and the throughput of a system is improved.

Description

technical field [0001] The invention relates to a processing method of multi-device transparent HARQ. Background technique [0002] Acronyms and key term definitions [0003] AOS Advanced Orbiting Systems Advanced Orbiting Systems [0004] CRC Cyclic Redundancy Check Check Cyclic Redundancy Check [0005] HARQ Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request [0006] SCID Spacecraft Identifier spacecraft identifier [0007] TFVN Transfer Frame Version Number Frame version number [0008] VCID Virtual Channel Identifier virtual channel identifier [0009] Aiming at the characteristics of complex environment, long delay, high bit error rate, short duration of communication with each other, and large amount of data transmission in the deep space communication network, transparent HARQ technology was proposed in the previous scheme. Transparent HARQ technology is defined as implementing HARQ technology at the receiving end, and not discarding data frames whe...

AI Technical Summary

Problems solved by technology

[0012] The disadvantages of the existing technology are: 1. In deep space communication, the downlink has the characteristics of data traffic burst and large data traffic volume, and a decoding device is used to decode a large amount of data, and the decoding speed and efficiency are low; 2. In deep space communication, the one-way average delay of data is relatively large. For example, the one-way average delay from the Mars probe to the ground station is 768 seconds. If the data error needs to be retransmitted, a large amount of data may be cached in the cache In the area, since there is only one decoding device, the buffer area may not be able to store such a large amount of data

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