计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (35): 97-100.DOI: 10.3778/j.issn.1002-8331.2010.35.028

• 网络、通信、安全 • 上一篇    下一篇

无线传感网中能量有效的免碰撞MAC协议

苗 毅1,冯浩然2   

  1. 1.中国机械工业经济管理研究院,北京 100055
    2.清华大学 自动化系,北京 100084
  • 收稿日期:2009-05-15 修回日期:2010-06-25 出版日期:2010-12-11 发布日期:2010-12-11
  • 通讯作者: 苗 毅

Energy-efficient reduced collision MAC for wireless sensor networks

MIAO Yi1,FENG Hao-ran2   

  1. 1.Research Institute of Machinery Industry Economic & Management,Beijing 100055,China
    2.Department of Automation,Tsinghua University,Beijing 100084,China
  • Received:2009-05-15 Revised:2010-06-25 Online:2010-12-11 Published:2010-12-11
  • Contact: MIAO Yi

摘要: 无线传感网络普遍使用CSMA/CA机制和二进制指数退避算法避免碰撞。提出了一种能量有效的免碰撞MAC协议ERC。该协议将数据传输划分为协商和节点排队传输两个阶段,通过碰撞避免、节点休眠和批量传输机制提升吞吐量并节省整体能耗。理论分析和仿真表明,该协议在各种负载情况下都能明显提升网络的吞吐量与能量效率。

关键词: 无线传感网, MAC协议, 免碰撞, 能量效率

Abstract: Wireless sensor network employs CSMA/CA and BEB(Binary Exponential Backoff) mechanism to avoid collision generally.This paper presents an energy-efficient reduced collision(ERC) MAC.ERC separates the data transmission cycle into two phases,negotiation phase and transmission phase.ERC improves the throughput and energy efficiency by collision avoidance,terminal sleeping and bulk transmission mechanisms.Simulation results demonstrate that ERC can enhance the network throughput and energy efficiency under various offered load rates.

Key words: wireless sensor network, MAC protocol, reduced collision, energy-efficiency

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