| 轮询多址通信系统门限服务策略研究 |
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| 引用本文： | 李 琰,赵东风,丁洪伟,高 飞.轮询多址通信系统门限服务策略研究[J].通信学报,2005,26(3):104-108. |
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| 作者姓名： | 李 琰 赵东风 丁洪伟 高 飞 |
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| 作者单位： | 1. 云南大学,通信工程系,云南,昆明,650091
2. 云南民族大学,物理与电子电气信息工程学院,云南,昆明,650031 |
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| 基金项目： | 国家自然科学基金资助项目(60362001) |
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| 摘 要： | 从两方面对离散时间情况下轮询多址通信门限排队服务系统进行了研究。改进了系统服务策略，运用嵌入式马尔可夫链理论和多维概率母函数的方法，得到了改进后系统查询时间点处的平均排队队长和信息分组平均时延理论解析式，仿真结果表明分析方法有效且系统性能较之原系统得到提高；采用一种简化的近似算法，得到了轮询周期内平均队长的理论解析式，理论计算与仿真结果有较好的一致性。
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| 关 键 词： | 轮询多址 服务策略 嵌入式马尔可夫链 多维概率母函数 二级门限 近似算法 |
| 文章编号： | 1000-436X(2005)03-0099-07 |
Study on queue scheme of gated polling multi-access communication system |
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| LI Yan,ZHAO Dong-feng,DING Hong-wei,GAO Fei.Study on queue scheme of gated polling multi-access communication system[J].Journal on Communications,2005,26(3):104-108. |
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| Authors: | LI Yan ZHAO Dong-feng DING Hong-wei GAO Fei |
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| Affiliation: | LI Yan1,ZHAO Dong-feng1,DING Hong-wei1,GAO Fei2 |
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| Abstract: | The gated polling multi-access communication system was analyzed in discrete time. By improving the queue scheme, the analytical expression of average queue length on the polling point and average message delay were obtained. The imbedded Markov chain theory and the generating function method were used. The simulation shows the analytical is reasonable and the performance is enhanced compared with ordinary polling gated system; With an simple and approximate arithmetic, the analytical expression of averagequeuelengthduringthepollingcycletimeispresentedandisinaccordancewiththeresultofcomputersimulation. |
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| Keywords: | polling multi-access serve scheme imbedded Markov chain theory the generating function method twice gated service approximate arithmetic |
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