Effective Stale Routes Management Using Preemptive Routing in DSR
S. R. Menaka · 2013
Abstract: Dynamic network topology is a major routing issue in MANETs, where effective management of the routes as the nodes move in and out of each other’s range is a mandatory requirement to reduce data packet loss, end to end delay and the network overhead. Routes are maintained in route cache by every node as they learn from forwarding data packets. While route cache has their own benefits of reducing the overhead in the network, it possesses inefficiencies due to stale paths and use of low quality paths when feasible paths become available. Based on the studies of performance of DSR, a new approach to update the route cache to remove the stale paths effectively using preemption in route switching by predicting the possibility of current link breakage by sensing the RSSI value is discussed in this paper. The effectiveness of the proposed methodology is highlighted with the simulated results. Key words: MANET Source Routing Cache freshness Overhearing Route cache update and energy efficiency