چکیده (انگلیسی):

A Mobile Ad-Hoc Network (MANET) is termed as a set of wireless nodes which could be built with
infrastructure less environment where network services are afforded by the nodes themselves. In such a
situation, if a node refuses to co-operate with other nodes, then it will lead to a considerable diminution in
throughput and the network operation decreases to low optimum value. Mobile Ad hoc Networks
(MANETs) rely on the collaboration of nodes for packet routing ahead. Nevertheless, much of the existing work
in MANETs imagines that mobile nodes (probably possessed by selfish users) will pursue prearranged protocols
without variation. Therefore, implementing the co-operation between the nodes turn out to be an significant issue.
The previous work described a secured key model for ad hoc network with efficient node clustering based on
reputation and ranking model. But the downside is that the co-operation with the nodes is less results in a
communication error. To enhance the security in MANET, in this work, we present a hybrid approach, build a
node co-operation among the nodes in MANET by evaluating the weightage of cooperativeness of each node in
MANET. With the estimation of normal co-operative nodes, nodes are restructured on its own (self). Then
clustering is made with the reorganized nodes to form a secured communication among the nodes in the MANET
environment. The Simulation of the proposed Hybrid Approach for Node Cooperation based Clustering
(HANCC) work is done for varying topology, node size, attack type and intensity with different pause time
settings and the performance evaluations are carried over in terms of node cooperativeness, clustering efficiency,
communication overhead and compared with an existing secured key model. Compared to an existing secured
key model, the proposed HANCC performance is 80-90% high.