Delay and interference aware metric in multi-channel wireless mesh network

With the features provided by wireless mesh networks (WMN) and the increasing number of users, the Quality of Service (QoS) has become essential to support multimedia applications. In addition, employing the multichannel approach has led to the improvement of the network performance. However, selecting a path with the maximum available bandwidth to transmit data from the source to the destination is a critical issue because of intraflow interference and inter-flow interference. In this paper, we propose a routing metric Delay and Interference Aware Metric (DIAM), which selects a path with high data rate and low signal interference to achieve high performance. The DIAM metric estimates the intra-flow interference, inter-flow interference and delay of a link for multi-channel WMNs. We have implemented DIAM in the AODV routing protocol using the Network Simulator (NS2). The performance of our metric is measured by conducting simulation experiments in static and mobile networks.