A Network Coding-Aware Routing Metrics for Wireless Multi-Hop Network
Weiling Wu · Beijing Youdian Xueyuan xuebao · 2009
To improve network spectral efficiency,a network coding-aware metrics for wireless routing expected coding-aware transmission count(ECTX) is proposed.In general,there are two steps in coding-aware routing communication: one is finding coding opportunity and network-coded node in the routing discovery phase,the other is determining the optimum path from the coding-available paths and the coding-unavailable ones.The expected coding-aware transmission count fairly quantifies the network coding gain while considering the wireless transmission conditions.We implement the ECTX routing in wireless mesh system in C++ and conduct extensive evaluation.Simulation results illustrate that,compared with the ones which oblivious of coding gains using,the transmission efficiency can be sharply increased in the whole network and achieves 5%～20% throughput gains.