Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An Energy-Efficient Mobility-Supporting MAC Protocol in Wireless Sensor Networks

  • Peng, Fei (University of British Columbia(Institute of Information on Traditional Chinese Medicine, China Academy of Chinese Medical Sciences)) ;
  • Cui, Meng (Institute of Information on Traditional Chinese Medicine, China Academy of Chinese Medical Sciences)
  • Received : 2014.02.26
  • Accepted : 2014.09.19
  • Published : 2015.04.30
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Abstract

Although mobile applications are an essential characteristic of wireless sensor networks, most existing media access control (MAC) protocols focus primarily on static networks. In these protocols, fixed periodic neighbor discovery and schedule updating are used to connect and synchronize neighbors to provide successful data transmission; however, they cannot adapt to mobile speed variation and degrade the network performance dramatically. In this paper, we propose a mobile-supporting mechanism for MAC protocols, in which the decision to update the neighbors of a mobile node is made adaptively according to the mobile speed. Analysis and simulation results demonstrate that the mechanism efficiently avoids the disconnection of amobile node from its neighbors and achieves a better performance as compared with fixed periodic neighbor discovery.

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References

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