December 2012
International Journal of Reviews in Computing;Dec2012, Vol. 12, p44
Academic Journal
In this paper, studying the effect of malicious nodes in the Wireless Sensor Networks (WSNs) is proposed. The low-cost, low data rate of the sensor nodes made the WSN a hot topic among researchers. Certain characteristics like dynamic topologies, limited data rate and limited battery power makes routing in WSN challenging compared to traditional networks. Earlier work on WSNs mainly focused on developing efficient routing mechanisms in dynamic and resource-constrained networks. Several efficient routing protocols were suggested for WSNs where most assume a trusted and cooperative environment. However, they are all vulnerable to attacks by malicious nodes; routing attacks in WSNs are especially serious. Geographic routing research is more recent than topological routing; it has received special attention as improvement in geographic information produces better routing performance. In this study, the effect of the malicious nodes on geographic routing is investigated. Simulations are conducted to evaluate the performance degradation of network due to malicious node activity. Simulation studies conducted for network with 15% malicious nodes show that the throughput of the network degrades significantly.


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