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应用科学学报 ›› 2009, Vol. 27 ›› Issue (6): 563-568.

• 通信工程 • 上一篇    下一篇

隐终端下S-MAC协议性能分析

陈昊， 姚国良， 刘昊   

  1. 东南大学国家专用集成电路系统工程技术研究中心，南京210096
  • 收稿日期:2008-11-11 修回日期:2009-09-11 出版日期:2009-11-25 发布日期:2009-11-30
  • 作者简介: 陈昊，博士生，研究方向：无线传感器网络协议，E-mail：haochen@seu.edu.cn
  • 基金资助:

    国家自然科学基金(No.90407009)；国家“863”高技术研究发展计划基金(No.2007AA07Z2A7)资助项目

Analysis of S-MAC Protocol with Hidden Terminals

CHEN Hao, YAO Guo-liang, LIU Hao   

  1. National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China
  • Received:2008-11-11 Revised:2009-09-11 Online:2009-11-25 Published:2009-11-30

PDF

1487

被引次数

2

摘要：

提出一种隐终端下的S-MAC协议分析模型. 该模型可用于节点MAC层服务延迟和网络吞吐率的性能评估. 分
析结果表明，随着节点负载流量逐渐增大，增加隐终端数目将导致节点更早进入饱和状态，同时MAC层服务延迟显著延
长，网络吞吐率显著下降. 通过ns-2仿真工具测量不同隐终端数下MAC层服务延迟和网络吞吐率，仿真结果与分析结果
吻合，验证了分析模型的正确性.

关键词: 无线传感器网络, S-MAC, 隐终端

Abstract:

 This paper proposes an analytical model that allows the influence of hidden terminals on the performance
of S-MAC protocol to be assessed. The model is used to analyze the impact of the number of hidden terminals on
the service delay and throughput of the MAC layer. Analysis results show that the more the hidden terminals, the
rapidly the service delay increases. Besides, increasing the number of hidden terminals lowers the load, leading to
early occurrence of the saturation regime and increase of the saturation delay value. Simulation results based on
ns-2 show good agreements with the analytical results, validating accuracy of the model.

Key words: wireless sensor network, S-MAC, hidden terminal

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