A Novel Node Movement Detection Scheme in Wireless Sensor Networks

It is well-known that localization in Wireless Sensor Networks (WSNs) is costly. However, after deploying and localizing the sensors, sensors may be moved from their original location by the depredation of the enemy or natural phenomena. In such cases, moved sensors return the inconsistent information with their incorrect location to sink or spread the incorrect location to the network resulted in arising problem with geographic protocols or applications. In this paper, we propose a distributed node-connectivity-based scheme to detect moved nodes. The simulation results show that our scheme has extremely low communication overhead and high detection rate especially in large scale node movement scenarios.