Delay Analysis of IEEE 802.15.4 CSMA/CA Scheme in Wireless Multi-hop Sensor Networks
Analysis of IEEE 802.15.4 Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) scheme for multi-hop wireless sensor networks (WSNs) has received considerable attention recently, and most of these analyses focus on how to avoid hidden terminal impacts rather than the exact multi-hop characters. In this paper, we propose a stochastic analysis approach which contains 11 modified semi-Markov chains and one macro-Markov chain to evaluate delay of CSMA/CA scheme in multi-hop WSNs, presenting the accurate statistical results. Delay analyses of one hop together with two hops are proposed based on the assumption that nodes are randomly placed according to a Poisson distribution, and then we can easily extend the analyses to three hops or even higher hops. Comprehensive simulation results based on NS-2 are consistent with the predictions of these models.
IEEE 802.15.4 CSMA/CA Performance Evaluation Markov Chain NS-2 Simulation Multi-hop networks
Jianping Zhu Zhengsu Tao Chunfeng Lv Fei Gao
Department of Electronic,Information and Electrical Engineering,Shanghai Jiaotong University,Shangha School of Electrical and Information Technology,Yunnan University of Nationalities,Kunming 650031,P.
国际会议
太原
英文
302-305
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）