DSR Routing Protocol Based On Cluster

A mobile ad hoc network (MANET) is a self-organizing and self-configuringmulti-hop wireless network, where the network structure changes dynamically due tomember mobility. Each node has the function of a host and a router. With the rapiddevelopment of Ad Hoc wireless network continuously, the researchers attach moreand more importance to the performance evaluation of its routing protocol and havealready analysed and studied those protocols to a great extent. People often discussand study four routing protocols: DSDV, TORA, DSR and AODV. Those protocolsare divided into Table driven routing protocol and On-demand driven routing protocolgenerally. To enhance the wireless network expansibility, large-scale Ad Hoc wirelessnetwork often use the hierachical (or clusering) structure. The Ad Hoc wirelessnetwork is divided into some clusters, which consist of the Cluster Head and OrdinaryNode. Compared with the network scale of planar structure, one of hierachicalstructure is not limited to a large extent and has smaller routing and control overhead.It realizes mobile management and local synchronization of network more easily.To combine the advantages of hierachical structure with those of Ad Hoc routingprotocol, the Clustered Dynamic Routing Protocol (CDSR) is brought forward inorder to improve and enhance the general performances of wireless network. Themain content of my paper is just as follows:Firstly, it introduces the Ad Hoc routing protocol, the hierachical structure andthe clustering algorithms. Secondly, the paper explains a Enhanced WeightedClustering Algorithm (EWCA) applicable to large-scale Ad Hoc network topologymanagement and proposes DSR routing protocol based on EWCA, which is on thebasis of better performance algorithm EWCA and use for reference of the advantagesof on-demand routing in DSR protocol;The CDSR route discovery is realized fromone Cluster Header to another and the communication between the Clusters recur toCluster Headers (no exist Gateway Node). Then, it analyzes and evaluates theperformances of CDSR routing protocol and DSR routing protocol under theGloMoSim simulator, coming to the conclusion that comepared with DSR, CDSRhave the advantages of higher delivery and throughput, lower delay, betterexpansibility. Therefore, CDSR is better suitable for the large-scale self-organizingwireless network. Finally, it discusses the disadvantages and advantages of CDSR andthe perspective of Ad Hoc wireless network.