End-to-end real-time reliable transmission method based on network coding

Abstract

The invention discloses an end-to-end real-time reliable transmission method based on network coding. The method mainly solves the problems of network congestion, data transmission time delay, poor reliability and the like caused by unstable node links, channel interference and the like in end-to-end network transmission. The method provided by the invention comprises four key contents of a sending end coding method, a receiving end decoding method, an end-to-end flow control method based on network coding and real-time data transmission based on network coding. The method comprises the following steps: firstly, designing an encoding matrix, and encoding on the basis of ensuring linear independence between encoding packets; secondly, in the decoding process of the receiving end, designinga rapid parallel decoding scheme, and reducing the calculation pressure of the receiving end. The problem of packet loss caused by link instability can cause congestion in transmission, and the performance of the method is improved on the basis of traditional congestion control. Finally, a network coding data transmission method based on streaming processing is designed based on the method, and the contradiction between the network coding data transmission method and network coding based on data packet batch processing is solved.

Description

technical field [0001] The invention relates to the field of real-time transmission in wireless lossy networks, in particular to an end-to-end real-time reliable transmission method based on network coding. Background technique [0002] With the development of communication technologies such as 5G and 6G, the demand for high reliability and low latency in wireless communication networks is becoming increasingly obvious. In a wireless network, factors such as environmental interference, node movement, and attenuation will cause bit errors and loss of transmitted data; when the sending and receiving rate of nodes exceeds the network capacity, it will cause congestion, causing serious delay problems and even network collapse. Therefore, there is a need for a reliable transmission method with network congestion control and low delay, while minimizing redundant control overhead of the network. [0003] The introduction of network coding technology can improve network throughput,...

AI Technical Summary

Problems solved by technology

However, its real-time requirements are high, and the encoding and decoding operations of nodes are still complex problems. The disadvantage of traditional random linear network coding technology is that the decoding speed is slow, and N source data packets must receive all N encoded packets before they can be decoded. ;at the same time,

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