A Relatively Optimal Cross-layer Routing Algorithm in Wireless Mesh Network

Routing in Wireless Network is challenging because of the unpredictable behavior of the medium and the proactive effect of interference. All of these factors lead to poor performance in multi-hop wireless mesh networks specially with the conventional routing. In order to exploit all the advantages that the wireless medium offers, new routing metrics must be explored. These metrics should come from across-layer approach in order to make the routing layer aware of the local issues of the underling layers and even change some parameters of the PHY layer. In the paper, we explore three primitive physical layer parameters: bite error rate(BER), interference, and transmission power. We define the metric so that the network layer can correctly find paths that offer: low levels of bite error rate ,reliability in terms of packet success rate, and relatively low power. Keywords—cross-layer;BER;interference; power control; optimization; WMN