A Study On Multi-path Power-saving Routing Protocols In Ad Hoc Networks

Ad Hoc network, also named as self-organized network, is a temporarily formed multi-hop wireless communication network without any infrastructure. In which mobile nodes cooperate to route packets by themselves via wireless link. The network features in high mobility, fast deployment and etc., and can be applied to modern battle field, disaster rescue, conference and other environments, therefore it has drawn wide attention from the military and the academic. Nevertheless, there are still several problems, such as the ones caused by uncertain feature of node mobility, constraint of energy capacitance and computing ability of nodes, equally distributed environment and etc. Therefore the main aim of researching Ad Hoc protocol is how to improve the effective of its route.Aiming the multi-path of Ad Hoc network protocol, this dissertation researches the related theory and pivotal technology. The main tasks include several aspects:(1) In allusion to the present multi-path routing protocol of Ad Hoc network, this paper puts forward Ad Hoc Multi-Path Power-saving Protocol. It discusses the design of controlling message, arithmetic and the progress of building route. And this protocol considers the things of costing least power, avoiding the lower point of energy and the spare route and so on. On the basis of adding modulus, it calculates the beat route. By application of NS2 simulation this dissertation tests the AHMP and the intrinsic AOMDV,MSR.By comparing deliverity throughput average end-end dely and survival number of joint, the result indicates the features of deliverity throughput and survival number of joint in AHMP has improved obviously under the condition which doesn't apparently add the average end-end dely. Therefore AHMP is a kind of effective multi-path routing.(2) In mobile Ad Hoc networks, routing security has become an important issue due to the self-organize, dynamic topology and wireless surrounding of networks. On basis of informal multi-path Source Routing, it puts forward to the multi-path routing selecting arithmetic which adopted the credit authentication in network nodes, in order to find more steady reliable routing and avoid the unequal nodes. Through simulated experiment it illustrates that this arithmetic can not only guaranty the steady security of network, but also provide the better service quality for nodes.