Secure media access control (MAC) in wireless sensor networks: intrusion detections and countermeasures

Current works on MAC protocols in wireless sensor networks(WSN) mainly concentrate on optimizing the efficiency and fairness of common channel access. We propose a secure MAC protocol improve the security of WSN, which is based on the RTS(request to send)/CTS(clear to send) mechanism. Our major contributions include: analysis of the security problems of RTS/CTS based MAC protocols; design of the intrusion detection method using soft decision theory; discussion of the intrusion strategies and attack and defense simulation models.