Performance Evaluation of IEEE 802.15.4 MAC with Synchronization-loss Based on Discrete-Time Markov Chain
Wireless sensor networks (WSNs) are normally assumed to be synchronized (in Syn-mode).However,nodes may lose synchronization,and therefore,will work in Syn-lost-mode before potentially re-synchronizing.This procedure brings poor performance to the network.This paper evaluates the impact of losing synchronization in beacon-enabled IEEE 802.15.4 network with star topology.Discrete-time Markov-Chains (DTMC) are proposed to investigate the impact of three scenarios which lead to Syn-lost-mode.These scenarios are node identification (ID) conflict,realignment failure and a certain number of times of continuous beacon-loss.To the best of our knowledge,this is the first work on Syn-lost-mode performance in synchronized IEEE 802.15.4 networks.The performance is investigated in terms of the network throughput,time delay,packet delivery ratio and energy consumption.Simulation also verifies our work and demonstrates the poor network performance due to synchronization-loss.
802.15.4 MAC CSMA/CA Data delivery procedure Discrete-time Markov-Chain Performance evaluation
Peng Hao Weiting Liu Jianhua Wang
School of Electronics and Information Jiangsu University of Science and Technology 2 Mengxi Road, Zhenjiang, China 212003
国际会议
2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))
成都
英文
319-324
2012-11-09（万方平台首次上网日期，不代表论文的发表时间）