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移动Ad hoc网络中中继伙伴的动态选择

Dynamic Relay Selection in Mobile Ad Hoc Network
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摘要 通过将估计出的损耗时间与中继选择所用时间的比较,确定预警阈值。为了避免系统错误地频繁切换,提出一种通过比较信噪比及其变化率的解决办法。再通过信噪比与阈值的比较,来触发动态选择机制,在不间断当前信息传输的过程中进行中继伙伴选择,保证通信的连通性和可靠性。由于预警阈值的设定,使得信噪比小于中断门限的概率减小,因此通过对中断概率的仿真证明该方案在减小系统中断方面有所改善。 The warning threshold value is determined by comparing the estimated loss time with the time which＇s spent on seteetrog the optimal relay. In order to avoid wrong frequent handover in the system, one kind of solution through the comparison of SNR and its rate of change is proposed. Then through comparison of the SNR and the threshold value, the dynamic selection mechanism is triggered for selecting the relaying partner in the uninterrupted information transmission process to guarantee the communication connectivity and reliability. As a result of the warning threshold setting, the probability of SNR smaller than the interrupt threshold is reduced. Finally the simulation of the outage probability indicates this scheme has some improvement in reducing the system interruption.
作者 吴长奇 毛其林
机构地区 燕山大学信息科学与工程学院
出处 《无线电通信技术》 2009年第4期24-26,共3页 Radio Communications Technology
关键词 SNR 中继伙伴 中断概率 阈值 SNR relaying partner outage probability threshold value
分类号 TN925 [电子电信—通信与信息系统]
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参考文献7

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无线电通信技术
2009年 第4期

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