Survivability Estimation Model for Clustered Wireless Sensor Network Based on SMP
Zhu Shica · Chuangan jishu xuebao · 2014
Wireless sensor network is suitably applied in some occasions,such as battlefield scout and emergency communication,how to evaluate the survivability quantitatively has gradually attracted attention. A survivability estimation model of clustered WSN based on the semi-markov process is put forward in this paper. By considering the survival states of the cluster heads in emergency communication,the survivability states transition diagram of cluster heads is established based on the semi-markov process. Combining with network survivability requirements,the survivability effectiveness function of the entire network is calculated,and the influence and correlation of various evaluation indexes of network survivability is analyzed quantitatively. And then,using this model the survivability of the WSN running under SRPC protocol and RLEACH protocol is quantitatively evaluated. Analysis and simulation results show that,the model not only can be used to evaluate the survivability of WSN in emergency communication objectively and effectively,but can provide reference for the practical deployment and application of WSN.