M2iRi2: Multi-power, multi-interface routing protocol for intra/inter-flow interference considerations in wireless mesh networks

Wireless mesh networks (WMNs) technologies which accede to the advantages of ad hoc networks have received much attention. Transmission power control and routing selections are critical issues in the past researches of ad hoc networks. Variable transmission power levels impact the node connectivity and affect routing selections. Further, different power levels cause different network spatial reusability and interference. These affect both the network throughput and end-to-end delay. In this paper, we present a novel cross-layer routing protocol, known as M²iRi², for multi-interface WMNs. We incorporate M²iRi² with transmission power control and intra/inter-flow interference aware routing selection. Each traffic flow chooses the appropriate power level on each hop to forward its packets along the path with less interference. The simulation results show that our cross-layer routing protocol can look after both network throughput and end-to-end delay.