计算机应用 ›› 2011, Vol. 31 ›› Issue (11): 2902-2904.DOI: 10.3724/SP.J.1087.2011.02902

• 网络与通信 • 上一篇    下一篇

水声传感器网络中基于改进时分多址技术的MAC协议

熊鹏   

  1. 上海电机学院 电子信息学院,上海 200240
  • 收稿日期:2011-05-24 修回日期:2011-07-08 发布日期:2011-11-16 出版日期:2011-11-01
  • 通讯作者: 熊鹏
  • 作者简介:熊鹏 (1978-),男, 江西南昌人, 讲师, 博士, CCF会员,主要研究方向:无线网络协议、网络安全。
  • 基金资助:
    上海市电机学院重点建设学科项目

W-MAC: a MAC protocol with modified time division multiple access for

XIONG Peng   

  1. School of Electronics and Information, Shanghai Dianji University, Shanghai 200240, China
  • Received:2011-05-24 Revised:2011-07-08 Online:2011-11-16 Published:2011-11-01
  • Contact: XIONG Peng

摘要: 海洋信道信号传输条件恶劣,水声传感器网络(UASN)的媒体访问控制协议(MAC)要能可靠且有效的工作面临极大的挑战。针对水下分组转发高传输延时和延时的起伏特性,提出了一个利用改进时分多址技术的媒体访问控制协议(W-MAC)。W-MAC通过简化的信号传输同步过程,利用“延缓时间”作为节点的实际数据传送时间,采用具有睡眠策略的监测时间来避免数据碰撞等一系列措施,使W-MAC协议在适应复杂的水下信号传送环境的同时,把能量开销限制在一个合理的水平。仿真实验表明,在水声信道条件下该协议可有效地改善网络性能。

关键词: 水声传感器网络, 时分多址, 媒体访问控制协议

Abstract: Signal transmission conditions are very poor for ocean channel. It is a great challenge for Media Access Control (MAC) protocol to work reliably and effectively in Underwater Acoustic Sensor Networks (UASN). Due to the long and changeful propagation delay, a new MAC with modified TDMA named W-MAC was proposed, which could adapt underwater environment through simplified synchronization process, the defer time to allocate transmitting of all nodes as well as the detection time with sleep scheme to prevent from data collision to decrease the overhead of energy. The simulation results show W-MAC is quite efficient when data traffic is high in underwater acoustic sensor network.

Key words: Underwater Acoustic Sensor Network (UASN), Time Division Multiple Access (TDMA), Media Access Control (MAC) protocol

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