计算机应用研究2016，Vol.33Issue(4)：1216-1218,1223,4.DOI:10.3969/j.issn.1001-3695.2016.04.056
基于马尔可夫链的802．15．4协议MAC层数据包服务时间研究
Study on data packet average service time in 802.15 .4 MAC layer based on Markov chain
摘要
Abstract
Aiming at the optimization problems of the data packet average service time of 802.15.4 MAC layer,this paper proposed a conversion mechanism of node state based on super frame structure,and analyzed the definition of the data packet average service time.After that,it derived the steady-state probability of the main state and the formula of the data packet aver-age service time by establishing the model of Markov chain on the state of the node.At last,this paper researched the influ-ence of the protocol parameters such as NB,BE,SO to the data packet service time of the steady-state probability.The research results show that,the data packet average service time is reduced by 2.3%,compared with other dormant node models.The model describes the working characteristics of 802.15.4 network nodes very well.The balanced configuration of protocol pa-rameters can improve the packet transmission performance.And the model can provide the reference for raising the real-time performance of the network.关键词
数据包服务时间/节点状态/协议参数/马尔可夫链模型Key words
data packet average service time/node state/protocol parameters/Markov chain model分类
信息技术与安全科学引用本文复制引用
程宏斌,孙霞,王晓喃,王海军,董瑞志..基于马尔可夫链的802．15．4协议MAC层数据包服务时间研究[J].计算机应用研究,2016,33(4):1216-1218,1223,4.基金项目
国家自然科学基金资助项目（61202440）；江苏省自然科学基金资助项目（BK20141230）；湖北省教育厅科学技术研究计划指导性项目（B2014011）；常熟市科技计划资助项目 （）
