上海交通大学学报(自然版) ›› 2012, Vol. 46 ›› Issue (09): 1382-1386.

• 自动化技术、计算机技术 • 上一篇    下一篇

一种无线传感器网络中基于信道可靠性的多信道MAC协议  

肖榕,蒋铃鸽,何晨   

  1. (上海交通大学 电子信息与电气工程学院, 上海 200240)  
  • 收稿日期:2011-11-10 出版日期:2012-09-28 发布日期:2012-09-28

A Channel Reliability Based Multi-channel MAC Protocol in Wireless Sensor Networks

 XIAO  Rong, JIANG  Ling-Ge, HE  Chen   

  1. (School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-11-10 Online:2012-09-28 Published:2012-09-28

摘要: 为了满足资源受限的无线传感器网络对于高带宽的需求,提出了一种基于信道可靠性的多信道媒体访问控制(MAC)协议RBMAC.引入了一种新的控制包结构和数据信道协商机制,提出了可发送信道列表和可接收信道列表的概念.为了从候选信道中选择最可靠的数据信道,将信道的可靠性问题抽象为博弈论中的多臂匪徒问题,并采用上限信心算法进行求解.仿真结果表明,与已有的动态信道分配方案相比,RBMAC协议的时延、吞吐量和丢包率等性能指标均有所提高,且其抗干扰能力更强.
   

关键词: 无线传感器网络, 多信道媒体访问控制协议, 控制信道, 信道可靠性

Abstract:  In order to meet the demand of high bandwidth in resource-constrained sensor networks, a channel-reliability based multi-channel MAC protocol namely RB-MAC was proposed. This protocol introduces a new kind of control packet format and handshaking process. Moreover, a ready-to-send channel list concept and a ready-to-receive channel list concept were proposed. In order to find the most reliable channel for data transmission, the data channel selection problem is transformed into the multiarmed bandit problem which is solved by the upper confidence bound algorithm. The simulation results show that, compared with dynamic channel allocation MAC (DCA-MAC), RBMAC decreases the delay and packet loss ratio, thereby increase the throughput. Besides, RB-MAC is more immune to interferences.  

Key words: wireless sensor networks, multichannel media access control (MAC), control channel, channel reliability

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