| 基于噪声信道的ARQ系统时延性能及最小滑动窗口控制研究 |
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| 引用本文： | 黎锁平,刘存明.基于噪声信道的ARQ系统时延性能及最小滑动窗口控制研究[J].信息与控制,2008,37(6):1-1. |
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| 作者姓名： | 黎锁平 刘存明 |
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| 作者单位： | 兰州理工大学运筹与控制研究所,甘肃,兰州,730050 |
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| 摘 要： | 基于噪声干扰信道（包括正向链路和反馈链路），并考虑到达信息包的随机拆分、滑动窗口长度、分组长度以及数据链路上的传播时延等影响因素，建立了传输分组批到达情况下链路层上退回N步ARQ系统（GBN-ARQ）和选择重发式ARQ系统（SR-ARQ）的MX/G/1排队时延模型．求得了两系统时延以及归一化的最大吞吐量的表达式．进而获得了在既定系统传输条件下确定最小滑动窗口长度、实施窗口控制的模型和方法．仿真表明，通过自适应地改变滑动窗口长度可以降低GBN-ARQ系统的时延，提高其传输效率，因而在一定条件下可以用GBN-ARQ代替SR-ARQ而避免后者较高的系统实现复杂度．
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| 关 键 词： | MX/G/1 GBN-ARQ SR-ARQ 分组平均服务时延 归一化最大吞吐量 |
On the Delay Performance and Minimum Sliding Window Control of ARQ System in Noise Channel |
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| LI Suo-ping,LIU Cun-ming.On the Delay Performance and Minimum Sliding Window Control of ARQ System in Noise Channel[J].Information and Control,2008,37(6):1-1. |
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| Authors: | LI Suo-ping LIU Cun-ming |
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| Affiliation: | LI Suo-ping LIU Cun-ming (Institute of Operations Research , Control Sciences,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | Based on the noise channels(both forward and feedback channels) and considering many influencing factors such as random decomposition of packet,sliding window length,packet length and its propagation delay in data link,the models M~(X])/G/1 on the delay performance of both GBN-ARQ(go-back-N ARQ) and SR-ARQ(selective-repeat ARQ) systems are established under the group arrival of packetes.The formulae to analyze propagation delay and unitary maximum throughput are also deduced for GBN-ARQ and SR-ARQ.For give... |
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| Keywords: | M[X]/G/I GBN-ARQ SR-ARQ |
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