Anycast Routing Protocol For Mobile Ad Hoc Networks

Mobile Ad hoc network (MANET) is a self-creating, self-organizing, self-administrating, network, which consist of mobile nodes connected by multi-hop communication paths. Unlike conventional wireless networks, ad hoc networks have no fixed network infrastructure or administrative support. This paper mainly addresses to the ANYCAST applied in routing protocols and recover the broken transmission paths quickly to improve networking performance of Mobile Ad hoc Network.This paper summarizes and analyzes Mobile Ad hoc network in aspects of its history, properties, and the current routing protocols. Researches on ANYCAST in Mobile Ad hoc network are analyzed with the discussion of conception, networking model, and the service choosing measures of ANCAST. Two ANYCAST routing protocols, A-DSR protocol and A-AODV protocol, are proposed on the basis of above parts. They improve the performance of Mobile Ad hoc network by balancing network traffic and choicing the shortest path to ANYCAST server group. And then the two protocol are both tested by one of most authorized networking simulating tools, Network Simulator v2(NS-2). The better networking performance on packet delivery fraction, packet end-to-end delay, and normalized routing load is proved by test results. A quick recovery protocol, QR-DSR is proposed with advantages of ANYCAST.QR-DSR protocol can fully use the cached routing information to establish a shortest path between source nodes group and destination nodes group to recover the broken transmitting paths. So the real-time networking can be enhanced effectively with a shorter duration on path recovery. This protocol's good performance is also presented in the simulation tests.