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计算机工程 ›› 2012, Vol. 38 ›› Issue (08): 61-63. doi: 10.3969/j.issn.1000-3428.2012.08.020

• 网络与通信 • 上一篇    下一篇

基于无线传感器网络的混合MAC协议

丁 鼎 a,b,刘方爱 a,b,李倩倩 a,b,杨光旭 a,b   

  1. (山东师范大学 a. 信息科学与工程学院;b. 山东省分布式计算机软件新技术重点实验室,济南 250014)
  • 收稿日期:2011-08-08 出版日期:2012-04-20 发布日期:2012-04-20
  • 作者简介:丁 鼎(1986-),男,硕士研究生,主研方向:无线传感器网络,分布式计算;刘方爱,教授、博士;李倩倩、杨光旭,硕士
  • 基金资助:
    国家自然科学基金资助项目(90612003);山东省科技发展计划基金资助项目(2011GGH20123);济南市高校院所自主创新基金资助项目(2010040072)

Hybrid MAC Protocol Based on Wireless Sensor Network

DING Ding a,b, LIU Fang-ai a,b, LI Qian-qian a,b, YANG Guang-xu a,b   

  1. (a. School of Information Science & Engineering; b. Shandong Provincial Key Laboratory forNovel Distributed Computer Software Technology, Shandong Normal University, Jinan 250014, China)
  • Received:2011-08-08 Online:2012-04-20 Published:2012-04-20

摘要: 结合载波侦听多路访问(CSMA)与时分多址(TDMA)的工作方式,提出一种基于无线传感器网络的混合介质访问控制(MAC)协议。引入快速冲突解决算法,对CSMA模式下的SMAC协议进行改进,使其争用窗口可以随着网络流量变化而动态改变,从而完成CSMA模式与TDMA模式的平滑切换。OMNeT++平台上的仿真结果表明,该协议能提高信道利用率,延长网络生命周期。

关键词: 无线传感器网络, 介质访问控制协议, SMAC协议, 时分多址, 网络负载

Abstract: This paper proposes a hybrid Medium Access Control(MAC) protocol based on Wireless Sensor Network(WSN) by combining with the work pattern of Time Division Multiple Access(TDMA) and Carrier Sense Multiple Access(CSMA). It Introduces Fast Collision Resolution(FCR) into MAC protocol. Sensor-MAC(SMAC) protocol is improved in the mode of CSMA. Under such condition, the contention window changes according to the changes of network traffic. The hybrid MAC protocol can switch the working way self-adaptively and smoothly between the mode of CSMA and TDMA. Simulation results on OMNet++ show that the improved protocol can enhance the utilization efficiency of channel and prolong lifecycle of network.

Key words: Wireless Sensor Network(WSN), Medium Access Control(MAC) protocol, Sensor-MAC(SMAC) protocol, Time Division Multiple Access(TDMA), network load

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