A Secure Routing Scheme Based on Multiple Criteria Decision Making in Wireless Sensor Networks

In wireless sensor networks, secure and efficient routing is very important. But its realization is difficult because of the limited resources of sensor nodes and the many routing factors. In order to realize secure routing, shorten the delay and prolong the life of the network simultaneously, we make two efforts in this paper. The first is building a trust model based on the ratio of packets delivery, the distance and the residual energy so to enhance the security of routing. The second is putting forward a secure routing scheme based on multiple criteria decision making, which uses the residual energy, trust value, direction factor and the distance to destination to select the next hop. Furthermore, the classical security services are also used to forward packets. The proposed scheme can not only decrease the resource consumption but also prevent most routing attacks.