Research And Improvement Of Dynamic Source Routing In Ad Hoc Networks

Ad Hoc network is a wireless transceiver with a mobile terminal device consisting of a multi-hop temporary autonomous system.Ad Hoc networks can't adapt to traditional routing protocols. Research of routing protocols becomes the most important part of the research of Ad Hoc.The topic for the Ad Hoc network topology change caused by the dynamic routing reliability is not high, the recurrent problem of flooding, In the analysis of existing routing protocols based on the route finding can improve reliability and reduce the frequency of flooding approach to improve network performance. DSR-based thesis proposes a new routing algorithm for DSR_IBNL. DSR_IBNL is a hybrid routing protocol, which combines the ideological position of the routing, the path through the nodes predicted survival time, based on the DSR protocol for routing discovery and maintenance procedures were improved. In the DSR_IBNL route discovery process to determine the survival time under the path of the effective time of source routing, source routing options also refer to the effective time and the routing hops, thereby enhancing the reliability of routing. Communication process in the control group, through the expansion of the head of DSR control packets in order to complete the exchange of node location information, to use the position to forward the packet routing basis. At the same time DSR_IBNL route maintenance process, the proposed route based on node lifetime proactive maintenance approach, to reduce the number of network routing flooding, reduce the problem of source routing failure adverse effects on the network.DSR_IBNL is realized and tested on NS simulation platform. By DSR_IBNL compared with the performance of DSR protocol, route proved DSR_IBNL agreement can improve the reliability, more responsive to the dynamic changes in network topology.