Research on the Security Strategy for Wireless Sensor Networks

A wireless sensors networks (WSNs) consist of a number of sensor nodes connected through a wireless network that detect data and relay the detected data to the sink node using the multi-hop wireless transmission.Now,one of the most important issue is how to implent critical security tasks such as intrusion or tamper detection, and therefore must be protected. In this paper,we first analyse the security challenges in the wireless sensor network from the application layer, transport layer, network layer, data link layer and physical layer based on the system model. Then we give the security strategy which usually used in wireless sensor networks from the key management, security routing, security integration, intrusion detection and confidence model. This strategy can ensure the data confidentially implement, reliably generate, efficiently integrate and securely transmit.