文章基本信息

标题：An Adaptive MAC Protocol Based on Spatial and Temporal Correlation in Wireless Sensor Networks
本地全文：下载
作者：Zhao, Jijun ; Wei, Zhongcheng ; Li, Zhihua 等
期刊名称：Journal of Communications
印刷版ISSN：1796-2021
出版年度：2011
卷号：6
期号：3
页码：262-269
DOI：10.4304/jcm.6.3.262-269
语种：English
出版社：ACADEMY PUBLISHER
摘要：The correlation between neighbor nodes is a key factor in wireless sensor networks. It has a crucial impact on network load. But few researches refer to it. This paper discusses the correlation effect on network load firstly, and then presents DOSC and DOTC as parameters to quantify the spatial and time correlation of the neighbor nodes respectively. Based on these, the paper proposes STCAS-MAC. STCAS-MAC is evolved from AS-MAC by improving its adaptive scheduling and considering the validity period of information. Simulation results show that compared with the AS-MAC, the proposed protocol improves greatly in several performances. Especially when the network load is heavy or variable, the STCAS-MAC protocol can improve the delivery ratio effectively or adaptation obviously.
关键词：wireless sensor networks, medium access control, adaptive scheduling, spatial and temporal correlation