计算机科学 ›› 2012, Vol. 39 ›› Issue (6): 84-88.
• 计算机网络与信息安全 • 上一篇 下一篇
舒俊浩,白光伟,沈航
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摘要: 针对现有无线传感器网络MAC协议不能提供区分服务和传输时延较大的问题,在经典多跳传输协议DWMAC的基础上,提出了一种具有区分服务功能的低时延MAC协议一DLD-MAC 关键词: 无线传感器网络,MAC,区分服务,马尔科夫链,低时延 Abstract: Considering that most of the existing MAC protocols in wireless sensor networks do not support any priority scheme,this paper proposed a novel,Diffserv-based low-delay MAC mechanism(DLl)MAC),on the basis of the existing DW-MAC protocol. I}he main idea is that, by introducing differentiated services, the high priority data chooses smaller back-off window, so that it can achieve much more chance to be delivered, and its packet transmission latency and energy consumption can be reduced significantly compared with low priority data. On the other hand,a Markov chain model was designed in this work, to analyze and evaluate the mechanism performance. Our analytical analyses show that the proposed DLl)MAC can effectively make the high priority data achieve higher QoS over the low priority data, and achieve much lower transmission latency than traditional MAC protocol as well, which is adequate to serve delay-sensi- tivc data flow. Key words: WSNs,MAC,Diffserv service,Markov chain,Low-delay 引用本文 舒俊浩,白光伟,沈航. DLD-MAC:一种区分服务的低时延传感器网络MAC协议[J]. 计算机科学, 2012, 39(6): 84-88. https://doi.org/ 使用本文 0 / / 推荐 导出引用管理器 EndNote|Reference Manager|ProCite|BibTeX|RefWorks 链接本文: https://www.jsjkx.com/CN/ https://www.jsjkx.com/CN/Y2012/V39/I6/84
关键词: 无线传感器网络,MAC,区分服务,马尔科夫链,低时延
Abstract: Considering that most of the existing MAC protocols in wireless sensor networks do not support any priority scheme,this paper proposed a novel,Diffserv-based low-delay MAC mechanism(DLl)MAC),on the basis of the existing DW-MAC protocol. I}he main idea is that, by introducing differentiated services, the high priority data chooses smaller back-off window, so that it can achieve much more chance to be delivered, and its packet transmission latency and energy consumption can be reduced significantly compared with low priority data. On the other hand,a Markov chain model was designed in this work, to analyze and evaluate the mechanism performance. Our analytical analyses show that the proposed DLl)MAC can effectively make the high priority data achieve higher QoS over the low priority data, and achieve much lower transmission latency than traditional MAC protocol as well, which is adequate to serve delay-sensi- tivc data flow.
Key words: WSNs,MAC,Diffserv service,Markov chain,Low-delay
舒俊浩,白光伟,沈航. DLD-MAC:一种区分服务的低时延传感器网络MAC协议[J]. 计算机科学, 2012, 39(6): 84-88. https://doi.org/
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