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摘要
A mobile ad-hoc network is an autonomous system having collection of mobile nodes connected by wireless links. Mobile nodes in a MANET communicate with each other based on unconditional cooperation and inherited trustworthiness. MANET is vulnerable due to the characteristics such as dynamic topology and openness. This leads to the exploitation of MANET by performing various kinds of attacks by the presence of malicious and (or) selfish nodes. Such nodes affect the normal routing process in a MANET thereby impacting the routing performances such as packet delivery ratio. Hence, the necessity of trust factor between communication nodes is substantiated. In this paper the proposed solution identifies the malicious and selfish behaviour of nodes by dynamic calculation of trust and energy values of the nodes in the topology. The proposed algorithm, Trust and Energy based Ad hoc On Demand Distance Vector improves the traditional AODV algorithm by the dynamic incorporation of trust and energy values for each node in the topology in order to achieve cooperative routing. In Trust and Energy based Ad hoc On Demand Distance Vector, the source node selects the cooperative path rather than the shortest path thereby isolating the malicious and selfish nodes. Finally, the simulation results show that the proposed Trust and Energy based Ad hoc On Demand Distance Vector routing algorithm isolate the malicious and selfish nodes, and substantially improves the routing performance such as packet delivery ratio and average end to end latency.
- 出版日期2015-4
