Abstract: The movement of nodes in mobile ad hoc networks results in a change in routes, requiring some mechanism for determining new routes. In this paper, a novel distance-based location-aided routing for MANET is proposed. By tracing the location information of destination nodes and the change of distance between nodes to adjust route discovery dynamically, the proposed routing algorithm can avoid flooding in the whole networks. Besides, the distance update threshold is set up to reach the balance between real-time ability and accuracy of location information of nodes. Performance results by simulation reveal that the new algorithm performs better than LAR1 in terms of the packet successful delivery ratio, average end-to-end delay and routing-load.

Key words: Ad Hoc network, location-based routing, location information