Signal Strength Based Reliability: A Novel Routing Metric in MANETs

Mobile Ad Hoc Network is a Network composed of mobile nodes that topology is constantly changing. If in the routing in these networks, the nodes that are selected as route nodes are not stable and have a high mobility, data transmission route is broken quickly. Therefore, the method can be considered in the routing that from the nodes are between source and destination, nodes that are more stable, are selected as intermediate nodes. In this paper we propose a novel routing metric for MANETs that is called Signal Strength Based Reliability (SSBR). In this scheme, by measuring signal strength changes of neighbor nodes, we can identify nodes that have a lot of mobility and can cause link failure. Thus, we don´t select them as route nodes. Advantage of this scheme is by selecting reliable nodes we can create a stable route that it has long lifetime. Simulation results show SSBR has better performance than other methods in same scenarios.