Abstract
In this paper, we consider a wireless sensor network (WSN) that consists of sensor nodes (SN), cluster head (CH), forward node (FN) and a base station (BS). The information acquired by the sensor node is sent to the CH, all the CH’s send the information to a FN which forwards it to the BS. Fast detection of malicious nodes is imperative to the performance of a WSN and therefore we study the weighted trust method for malicious node detection. We have considered two scenarios one with single cluster head without grid and other with multiple cluster head with non-overlapping grid. The results indicates that the scenario with multiple cluster heads with non-overlapping grid requires less time for malicious node detection with better accuracy as compared to the scenario with single cluster head without grid.
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