Research And Simulation On The Mobile Ad Hoc Network Routing Protocols Under Group Mobility Models

With the popularization of mobile equipment and rapid development of mobile communication technology, the demand for mobile collaboration is rising. Researches of mobile collaboration have become a hot point of mobile computing field. As the practical technology of mobile collaboration in cellular network develops, mobile collaboration in MANET starts to be researched.MANNET is a self-organized wireless network independent of the fixed station. It is easy and fast to organize the whole net without the limitation of space and time. It is very useful not only in rescue, meeting, war field and monitor system from the long distance, but also the extension of the end of the network.An ad hoc network is defined to be a dynamically reconfigurable mobile wireless network with no fixed infrastructure or central control, which makes the problems more difficult than the others. So the existing technology can not be used in the Ad Hoc network directly. The three chief characteristics of mobile collaboration in MANET are hierarchy, group mobility and group communication. There are frequent traffics between the nodes within the same group. But most of the existing network by the group since the agreement of the simulation were based on the traditional basis of random node and communication Scene and can not reflect the routing protocol' performance characteristics under the group mobile environment.In this thesis, a study of characteristics of Ad hoc routing protocol in group mobile environment is been done. This paper introduces Ad Hoc Networks protocol and the problems faced by the agreement, Several classics from the group described in detail the operational mechanism and network routing established by the agreement and safeguard the process. Group mobility models introduced several generic model from the current classification and network simulation platform; Later, Vehicles lined up for applications to swiftly build a road convoy to the one cohort group mobile simulation model. On platform of the NS-2 (Network Simulator), we simulated the three route protocols including DSDV (Destination Sequenced Distance Vector),AODV(Ad hoc On demand Distance Vector Routing) and DSR(Dynamic Source Routing). With different scence file, we obtained different simulated results by route protocols on different environment. With the different result by simulated software, we analized and compare route protocol performance in different kinds of network statue, conclusions are drawn..