Research And Implementation Of DED-AOMDV Routing Protocol Based On Dynamic Energy-detection And Load Balance

Mobile Ad hoc network is a complex distributed network system. The network consists of a group of wireless mobile nodes, it is a network system that can be deployed rapidly and used without depending on any fixed infrastructures, and it is a self-organizing and self-healing network without any central entities. Each node can cooperates and communicates with each other via wireless links. Due to the particularity of mobile Ad hoc network, it has a wide range of applications in many fields. In mobile Ad hoc networks, the design and improvement of routing protocols is the research focus in this field.Currently, researches on mobile Ad hoc network routing protocols have achieved many results which multipath and multicast technologies have been widely adopted in routing protocols. Many typical multipath routing protocols try to establish multiple paths which are loop-free and disjoint, and they can provide effective fault tolerance and can recovery disconnected routes of the network rapidly and effectively. But many protocols don’t consider the limited energy of the nodes’ influence on network performance, and can’t prevent the nodes with lower energy from joining in the paths, choosing these nodes can result in frequent link failures, thus it can affect the overall network performance. In addition, multiple routes can’t be fully utilized and are lack of a dynamic detection mechanism of path’s energy to regulate the flow distribution.To address the issues above, this thesis proposes a DED-AOMDV routing protocol based on dynamic energy-detection and load balance, mainly improves the following aspects: firstly, the thesis comes up with an idea of delaying forward in route discovery stage to delay amount of time and forward the route request messages depending on the nodes’ remaining power, then the route reply messages records the paths’ weight values which consists of energy and paths’ queue length. Source nodes can transmit data according to the weight of every path in proportion.This thesis describes the DED-AOMDV routing protocol in details and simulates the AOMDV protocol and the DED-AOMDV protocol in different scenarios based on NS2network simulation software. The analysis of simulation results verifies that the DED-AOMDV has a different degree of improvement in terms of average end-to-end delay, packet delivery ratio and network lifetime.