A Fuzzy Based Distributed Approach to Maintain Connectivity of Nodes in Mobile Ad-Hoc Networks Considering Pursue Mobility Model

The highly dynamic character of a Mobile Ad-Hoc Network (MANET) poses significant challenges on network communications. Previous work on MANET has resulted in numerous routing protocols aiming to maintain network connectivity among the active nodes. This paper presents a fuzzy based distributed algorithm to maintain connectivity in MANET. Mobile nodes follow the characteristics of the Pursue Mobility model. There is no need to change routing table as connectivity of the network is maintained all through. Every node in the network is free to travel with its own velocity. Individual node can take the decision on its own to change the velocity for maintaining the connectivity with the node being pursued (target node). In this approach each node is enabled with a GPS receiver. Target node transmits its velocity and coordinate information periodically to all pursuer mobile nodes in a network. The pursuer nodes, after receiving this information from the target node will modify its own velocity, to maintain the topology. Results obtained through simulation studies show the correctness of the proposed algorithm.