Research On Energy-Balancing And Node-Disjoint Multi-path Routing Protocols In Ad Hoc Networks

Because of limited energy of nodes in Ad hoc networks, it is likely to lead to split the entire network if some nodes'energy has been depleted. Besides, with dynamic topology structure and limited bandwidth, some routing protocols based on single-path not only could not make full use of the bandwidth, but also lead to instability and bigger delay. So energy saving and multi-path routing become focus in researching routing protocols of Ad hoc networks.Energy-saving and multi-path routing protocols have been studied in this paper. AODV, which is a typical routing protocol in Ad hoc networks, has been analyzed embeddedly. Two protocols are proposed based on AODV, which are called as Energy-Balancing routing protocols based on AODV (EB_AODV) and Node-Disjoint multi-path routing protocols based on AODV (NDM_AODV).First of all, This paper analyzes advantages and disadvantages of current energy-saving protocols. for not considering energy-saving in AODV, This paper makes energy expansion on AODV. An energy-balancing routing protocol has been proposed. By avoiding the low-energy nodes being involved in routing, energy-balancing between nodes has been realized; By delaying transmition mechanism of nodes with enough energy, energy-balancing of the whole network has been realized.Secondly, This paper analyzes advantages and disadvantages of current multi-path routing protocols. For having disadvantages of AODV, which uses single-path. This paper makes multi-path expansion on AODV. An node-disjoint multi-path routing protocol has been proposed, this protocol has made full use of the idea of source routing of DSR(Dynamic Source Routing)protocol, it records the path of request message to find many node-disjoint paths, and records the number of request messages to reduce load simultaneously.Finally, two protocols are simulated in NS2. The simulation results show that EB_AODV has extended the survival time of network efficiently, and NDM_AODV has made full use of bandwidth, and improve the performance of Ad hoc network efficiently.