Research On The Multi-path Routing Scheme Based On Time-slot Reservation In Ad Hoc Networks

Ad Hoc network is a self-organizing wireless network. It figures wireless transmission, highly dynamic topology, multiple hops and without center. These characters make it have unique advantage in some applications, but at the same time, it gives us many technical difficulties. Routing belongs to these problems and is also one of the hotspots of Ad Hoc networks researching.This paper mainly studied Multi-Path routing protocols of Ad Hoc network, computes and maintains alternative Multi-paths in routing discovery phase. Multi-path has better performance than single path routing protocols whenever in delay, error tolerance reliability. In this paper, we proposed a Multi-path routing scheme based on the integration of a novel multi-path routing protocol called AOMDV and a distributed time division multiple access MAC protocol called E-TDMA, which is a time slot reservation scheduling protocol. This routing scheme based on the reservation of time slots, built a set of link-disjoint paths, offered QoS only on the primary path, considering the other back-up paths as best-effort.At last, we use OPNET to simulate the proposed routing scheme, compared the result with AOMDV and AODV based on IEEE802.11. The simulation results show that the multi-path routing scheme we proposed has better performance in the term of average end-to-end delay, throughput and control overhead, etc.