MM-SOAR: Modified SOAR Protocol Using Multiple Metrics for Wireless Mesh Network

Abstract

Wireless Mesh Networks (WMNs) are bringing revolutionary changes in the field of wireless communication. Routing protocols and the cost metric play an important role in the performance of WMN. Currently most common metric used in Opportunistic Routing is Expected Transmission Count (ETX) based on the link's error rate and have drawback of lower throughput and higher overhead. In this paper we propose a new opportunistic routing protocol, Multiple Metric-Simple Opportunistic Adaptive Routing (MM-SOAR) with improved throughput. We introduce a new routing metric, Multiple Metric Cost (MMC), integrating three metrics: 1) Available bandwidth, 2) Residual energy and 3) Expected Transmission Count (ETX). MM-SOAR is simulated on OMNET++ and our extensive evaluation shows that MM-SOAR gives better performance than traditional Destination Source Routing (DSR) protocol and SOAR under a wide range of scenery. © Springer-Verlag Berlin Heidelberg 2014.