| 基于IEEE802.15.4协议的延时线问题探讨 |
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| 引用本文： | 詹杰,杨红,石伟. 基于IEEE802.15.4协议的延时线问题探讨[J]. 国际商务研究, 2007, 47(5): 67-70 |
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| 作者姓名： | 詹杰 杨红 石伟 |
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| 作者单位： | 湖南科技大学电子信息与科学系 湖南湘潭411201(詹杰，石伟)，湖南信息职业技术学院物理系 长沙410200(杨红) |
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| 摘 要： | IEEE802.15.4协议引入了延时线的概念,给协议带来了一定的影响.通过探讨工作在饱和状态、星形拓扑、信标使能的传感器网络下带时隙的马尔可夫链模型,推导出了该状态下的延时计算公式.仿真表明,延时线对延时的影响可以忽略,主要起节能作用.针对延时线的引入导致接入概率降低的问题,提出了让接入时隙的分布和节点数据长度相关的解决方案.
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| 关 键 词： | WPAN ZigBee 延时线 超帧 离散马尔可夫链 |
| 修稿时间： | 2007-06-18 |
Discussion on the Delay Line Probems Based on IEEE802.15.4 Standard |
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| ZHAN Jie,YANG Hong,SHI Wei. Discussion on the Delay Line Probems Based on IEEE802.15.4 Standard[J]. International Business Research, 2007, 47(5): 67-70 |
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| Authors: | ZHAN Jie YANG Hong SHI Wei |
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| Affiliation: | 1. Department of Electronic Information and Science, Hunan University of Science and Technology, Xiangtan 4112001, China ;2. Physics Department, Hunan College of Information, Changsha 410200, China |
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| Abstract: | The protocol is studied and the expression of access delay with delay line operating under the IEEE standard 802.15.4 by Markov chain model is derived in the beacon enabled,saturation mode,star topology with slotted.The effect of delay line is analysed.The simulation results indicate that the effect of delay line on delay can be ignored,but it can save the energy.Also,if the slots accessing channel are correlated to the size of data packet,the delay line''s effect can be decreased. |
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| Keywords: | WPAN ZigBee delay line superframe siscrete time Markov chain |
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