Detection of Malicious nodes using Selective Repeat Automatic Repeat Request protocol for Wireless Sensor Networks

Malicious nodes in wireless sensor network cause serious effects on critical factors like network lifetime, energy consumption and congestion control causing delay in delivery of messages. A lot of methods are being used to detect malicious nodes. In this paper we try to overcome the limitations of existing Watchdog method. For this we propose the method of detection of malicious nodes using selective repeat automatic repeat request protocol. The proposed method enhances the security of WSN by delivering all the packets without dropping any single packet and helps in removal of ambiguous nodes.