Coding and decoding method, related devices and related communication system

Abstract

An embodiment of the invention discloses a coding and decoding method, related devices and a related communication system. The scheme includes that coding and decoding between two information sources are supported by a DNCP (dynamic host configuration protocol), a coding device performs random linear coding for two IP (internet protocol) data packets with the arrival interval shorter than a set duration and identical target addresses, and accordingly influence of the problem of mismatching of transmission delays, sending rates and the like in an actual network is advantageously eliminated to a certain degree; DNCP packet headers of DNCP data packets carry two information source identities, two IP data packet identities and coding coefficient and vector information related to coding coefficients and vectors, accordingly, a foundation is laid for the coding device to continue repeated coding or a decoding device to quickly decode, and the universality of network coding in the actual network is improved advantageously; and as the coding and decoding method, the related devices and the communication system are implemented on the basis of a network coding technology, network resources can be sufficiently utilized, the throughput rate of the network is obviously increased, and high transmission efficiency is achieved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a codec method, related equipment and a communication system. Background technique [0002] Network Coding (NC, Network Coding), which was born in 2000, proposed how to achieve the network communication capacity determined by the "maximum flow minimum cut theorem" when a single source or multiple sources multicast or broadcast to multiple receiving points in a communication network An idea of ​​the limit. [0003] Routing switches on traditional communication network nodes only complete the "store-and-forward" function, and regard information as "goods", so they believe that information cannot be superimposed. And this cognitive limitation makes it difficult for the network to achieve maximum flow transmission. NC pointed out that if the routing switch is allowed to encode multiple incoming information streams before sending them, the network communication can ach...

AI Technical Summary

Problems solved by technology

[0004] Research and practice have found that the existing technology is mainly aimed at the scenario of a single source to multiple receiving points, but in the actual network there are more scenarios of multiple sources to multiple receiving points, which makes the existing technology unable to meet the requirements of the actual network. Application needs, and the existing technology adopts the mechanism of split coding, which greatly increases the data processing load of network nodes

Images