Location update suitable for geographic routing in MANETs

Abstract

Geographic routing protocols needs location information about nodes. In mobile ad hoc networks the nodes are mobile because of that the location information does not remain static. So that the location updation is more important in mobile ad hoc network. Periodic updation strategy updates the neighbors list that contains location information about neighboring nodes in a periodic manner so that it has many inaccurate neighbors with less packet delivery ratio. Adaptive location update strategy helps to update the location information about the nodes more frequently in the following situation when a node moves to a new location and also on hearing data transmission from neighbor the node will update the neighbors list. The GPSR protocol helps to forward the packets in a greedy manner and when a greedy algorithm fails to find the neighbor it will forward the packets via perimeter mode. In this adaptive location update strategy reduces the inaccurate neighbors, so that the packet delivery ratio is increased by maintaining accurate topology information and route the packets to neighbors that are moving with less speed and also it consumes less energy. The ns2 simulation is used for our work.