LARMA: location-aided route maintenance algorithm for mobile ad-hoc networks

Most MANET (Mobile Ad-hoc Networks) routing protocol was focused on the route discovery phase more than route maintenance phase. Thus, most MANET routing protocol cannot cope with a route failure that is caused by movement of node efficiently. To solve the above problem, in this paper, we propose an algorithm that maintains a robust routing path using the position information of mobile nodes in the MANET. In LARMA (Location-Aided Route Maintenance Algorithm), we defined the warning zone as a region with a high probability of link disconnection between two nodes. Each node chooses an appropriate intermediate node that is not within the warning zone in order to prolong the lifetime of the routing path. We use the QualNet simulator to evaluate the performance of our proposals, and compare the LARMA which modifying the existing AODV routing protocol with AODV. The simulation results show that a performance improvement of the LARMA in comparison with AODV in terms of link lifetime.