Location-aware long-lived route selection in wireless ad hoc network

Many routing protocols suitable for wireless ad hoc network have been proposed. However most of them have focused on the reachability among nodes which want to communicate with each other. Actually, even if a route has been successfully acquired to be established, due to the node´s mobility, there will be frequent route reconstructions, resulting in the need for a new partial or full route to the destination. Therefore, the selection of a long-lived route among multiple possible routes at the destination (if the source initiated on-demand routing protocol is applied to a wireless ad hoc network) helps to reduce the number of route disconnections. In this paper, for deriving a long-lived route, we exploit location information obtained by the GPS (Global Positioning System) and information of each node´s radio transmission range. Additionally, in order to avoid excessive beacon signals used by the ABR (associativity-based routing) protocol, only nodes on the acquired route exchange their beacon signals when detecting a route failure. Through simulation, we show that our proposed scheme is applicable to wireless ad hoc network