Location Aided Zone Routing Protocol in Mobile Ad Hoc Networks

This paper proposes a geographical routing algorithm based on Zone Routing Protocol (ZRP) to limit the area for discovering a new route by utilizing location information of nodes. Mobile Ad Hoc Networks (MANETs) have attracted much attention in the research and the industry. In MANETs using ZRP algorithm, nodes use Route REQuest messages (RREQs) to obtain a new route often by bordercasting them to other nodes in the network if they does not find out the destination in their routing zone. This dissemination mechanism guarantees to seek a route from source to destination with high probability. However, it creates many useless routing overhead packets while limited bandwidth and energy consumption are very important issues in MANETs. In order to reduce routing overhead, this paper proposes an approach name Location-Aided Zone Routing Protocol (LAZRP). Simulation results confirm that the proposed algorithm can depress routing overhead and end-to-end delay.