一种结合网络编码的路径代价衡量方法

针对无线路由协议中的路径代价衡量问题,结合网络编码改善无线节点信息互换的思想,提出了一种结合网络编码的路径代价衡量方法--RMNC,其核心思想是利用流量参数反映信息流的网络编码"搭乘"程度和逐节点计算路径的代价.通过将传输流流量参数和路径中节点左右链路信息流流量参数进行运算,获得路径上的各个节点的传输代价;网络中某一条路径的代价等于组成这条路径的节点传输代价之和,通过比较不同路径的逐节点计算代价值,获得最短路径.分析和模拟测试结果表明,RMNC可以有效地获得结合网络编码的最短路径,达到提高传输性能的目的.尽管传输延时有所增加,但可以接受,方法可行.

A routing cost measurement approach with network coding

Aiming at the problem of routing cost measurement in wireless networks,the RMNC,an improved routing cost met- ric approach based on network coding is proposed.The key idea of the approach is to use the traffic parameter to measure the rid degree of the flow and get the cost of the path while the path uses network coding.The approach operates the node cost metric by the traffic parameter in different links,and the cost of a path is the sum of the costs on the constitut- ing nodes,and the shortest path can b...