Abstract:

The problem of intra-channel diversity in multi-channel routing can be relived efficiently using new proposed technology called “Network coding”, and hence spectral efficiency can be increased. In this framework, a novel routing metrics WCECTT (Weighted Cumulative Coding-aware ETT) which fairly quantify the network coding gain while considering the wireless transmission conditions and intra-frequency interference is proposed. 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 in C++ and conduct extensive evaluation, and the simulation results illustrate that compared with the ones which oblivious of coding gains using ,transmission efficiency can be sharply increased in the whole network and achieves 10%-20% throughput gains.

Key words: network layer, network coding, multi-channel routing, coding-aware