| 一种基于跨层优化的低延迟无线传感器网络DE2协议 |
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| 引用本文： | 王罗,李云,刘占军,赵为粮.一种基于跨层优化的低延迟无线传感器网络DE2协议[J].重庆邮电大学学报(自然科学版),2007,19(5):622-626. |
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| 作者姓名： | 王罗 李云 刘占军 赵为粮 |
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| 作者单位： | 重庆邮电大学,光互联网及无线信息网络研究中心,重庆,400065 |
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| 基金项目： | 重庆市教委资助项目
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重庆市科委资助项目 |
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| 摘 要： | 是无线传感器网络MAC协议中比较具有代表性的一种协议，针对S-MAC协议的周期性侦听和休眠机制造成网络中业务延迟较大的缺点，提出了一种基于跨层优化的低延迟无线传感器网络MAC协议(CAL-MAC)。CAL-MAC协议在S-MAC基础上，采用了具有跨层优化思想的自适应侦听机制$该自适应侦听机制中，节点根据路径信息来决定是否进行自适应侦听。通过数值分析,CAL-MAC在保证能量有效性的同时降低了延迟。
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| 关 键 词： | 跨层优化 低延迟 自适应侦听 无线传感器网络 |
| 文章编号： | 1673-825X（2007）05-0622-05 |
| 收稿时间： | 2007-01-25 |
| 修稿时间： | 2007年1月25日 |
A low-delay MAC protocol based on cross-layer optimization for wireless sensor networks |
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| WANG Luo,LI Yun,LIU Zhan-jun,ZHAO Wei-liang.A low-delay MAC protocol based on cross-layer optimization for wireless sensor networks[J].Journal of Chongqing University of Posts and Telecommunications,2007,19(5):622-626. |
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| Authors: | WANG Luo LI Yun LIU Zhan-jun ZHAO Wei-liang |
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| Institution: | Special Research Centre for Optical Internet and Wireless Information Networks, Chongqing University of Posts and Telecommunications. Chongqing 400065. P. R. China |
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| Abstract: | S-MAC is a representative MAC protocol for wireless sensor network. The protocol adopts the periodic listening and sleeping mechanism but induces large delay in the network. To solve this problem, CAL-MAC that is a low-delay MAC protocol for wireless sensor network is proposed. CAL-MAC adopts coordinated adaptive listening mechanism based on cross layer optimization within the framework of S-MAC. In the mechanism, wireless sensor nodes perform coordinated adaptive listening depending on the routing information. Numerical analysis shows that CAL MAC can reduce the delay and guarantee the energy efficiency. |
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| Keywords: | cross-layer optimization low-delay eoordinated adaptive listening wireless sensor networks |
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