| 抑制NACK的定时器设置方法 |
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| 引用本文： | 蔡洪斌,周明天,杨国纬.抑制NACK的定时器设置方法[J].计算机科学,2000,27(9):71-74. |
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| 作者姓名： | 蔡洪斌 周明天 杨国纬 |
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| 作者单位： | 电子科技大学信息中心,成都,610054 |
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| 基金项目： | 本文得到四川省重点基金项目支持． |
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| 摘 要： | FEC can be combined with ARQ to achieve large scalable reliable mutlicast. The NACK im-plosion is a major problem in receiver-initiated reliable multicast when a large, number of receivers sendsNACK to the sender. The method that receivers send NACK to the sender based on timer can avoid theNACK implosion. We propose a method to set timers. The method of time divided unequally and basedon exponential distribution to set timers has the better perfornance. By analysis for up to 10^10 receivers,we show the NACK implosion is avoided and feedback delay due to timers is low.
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| 关 键 词： | FEC ARQ 设置方法 定时器 抑制 |
Timer Based Method of NACK Suppression |
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| Abstract: | FEC can be combined with ARQ to achieve large scalable reliable mutlicast. The NACK implosion is a major problem in receiver-initiated reliable multicast when a large number of receivers sends NACK to the sender. The method that receivers send NACK to the sender based on timer can avoid the NACK implosion. We propose a method to set timers. The method of time divided unequally and based on exponential distribution to set timers has the better perfomance. By analysis for up to l010 receivers, we show the NACK implosion is avoided and feedback delay due to timers is low. |
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| Keywords: | Suppress NACK Timer Exponentially distribution Time divided unequally |
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