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Decentralized topology management on mobile ad hoc networks

In this paper, a new simulation tool is described which is used to present a decentralized approach on Mobile Ad Hoc Networks. The simulation is developed in Matlab using a decentralizing algorithm. The paper includes a distributed algorithm for adaptive movement of nodes in a MANET (Mobile Ad hoc Network) to maintain the overall topology of the network. The proposed algorithm assumes the presence of a GPS receiver in each node so that every node is aware of the position of every other node. A node measures the relative position and velocity of its neighbours and checks whether a certain critical condition is satisfied or not. If the condition is satisfied, it keeps its position unchanged; otherwise a rush call is made to that node by its nearest neighbour to get it back within the range. The overall advantage here is that our new tool doesn't involve any co-ordinator which significantly reduces the overhead on the network. The simulation of the algorithm has been carried out on a few synthetically generated network scenarios and the results thus obtained show the effectiveness of the proposed algorithm.