Network Coding-Aware Metrics for Multi-Radio Routing
Weiling Wu · Beijing Youdian Xueyuan xuebao · 2009
The problem of intra-channel diversity in multi-channel routing can be relived efficiently using a technology proposed here called coding.It leads to an increase of the spectral efficiency.In this framework,a coding-aware metric weighted cumulative coding-aware expected transmission time(WCECTT) for multi-channel routing is proposed.It can fairly quantify the network coding gain when considering the wireless transmission conditions and intra-frequency interference.This metric can be used to determine the optimum path from the coding-available paths and the coding-unavailable ones.We implement the WCECTT routing in wireless mesh system and conduct extensive evaluation.Simulations illustrate that,when compared with coding gains using,the transmission efficiency can be sharply increased in the whole network and achieves 10%-20% throughput gains.