Research On The Routing Of Wireless Ad Hoc Network For Army

A mobile Ad Hoc network (MANET) is a temporary autonomous communication system that consists of a group of nodes which can routing and forwarding packets, in which there are no central nodes or fixed communication infrastructures. All the nodes in the network communicate with each other by distributed protocols. The topology of a MANET can change frequently since all communicating nodes can move with unlimited mobility. Traditional routing techniques are designed with implicit assumption of a comparatively stable network topology, and their performance degrades in mobile environments. New routing techniques are demanded for mobile Ad Hoc networks. Basing on the research of existing MANET routing protocols and considering the special requirements of battle field environment we propose several new MANET routing algorithms in this paper, which can be used to the different military units of battle field environment.We first summarize the research status of routing protocol for MANET based on the introduce of several popular MANET routing protocols, then we analyze their design ideas and propose the requirements that must be met for the military MANET routing protocols in the battle field environment, such as topology dynamic change, existence of unidirectional link, bandwidth restriction of wireless channel, node mobility pattern, and etc. In the battle field environment, because of the mobility of military vehicles and soldiers, the commanding radius may change enormously, which results in routing instability and high packet dropping probability. Merely increasing the node power leads to higher collision probability, so we suggest adjusting the node power based on the commanding radius. The simulation result shows that our scheme can improve the efficiency and stability of the MANET routing protocol.We propose the RETP routing algorithm based on location prediction. We also present the optimal routing and dynamic switch ideas: each node preserves at least two routes to the same destination, if the current routing path becomes invalidated, it will switch to the other routing path. Performance simulation shows that our algorithm improves the reliability and decreases the end-to-end delay of MANET.We present a QOS routing protocol for the military spy team environment. Although the number of nodes in the military spy team is relatively less than the ordinary battle field, its surrounding circumstance and collected information types are more complicated. Different information need different QOS requirement. Thus we suggest a dynamic link parameter based routing protocol M-QOS, which selects route based on the information types. Simulation results show the effectiveness of M-QOS algorithm.