| GPRS数据业务性能分析 |
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| 引用本文： | 朱畅华,裴昌幸,李建东,闵范保. GPRS数据业务性能分析[J]. 电子学报, 2004, 32(5): 836-840 |
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| 作者姓名： | 朱畅华 裴昌幸 李建东 闵范保 |
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| 作者单位： | 西安电子科技大学综合业务网国家重点实验室,陕西西安 710071 |
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| 基金项目： | 国家自然科学基金 (No .60 1 32 0 30 )，高等学校优秀青年教师教学科研奖励计划 |
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| 摘 要： | 基于D-BMAP/D/1排队模型分析GPRS数据业务在简化的一步接入模式以及不同服务速率下的性能,包括RLC/MAC缓冲区队列的平均长度、小分组(Mini-Packet)的平均时延和丢弃率等.分析结果表明:当定时器T3182时间变长时,时延缩短,丢弃率降低;处于空闲状态的移动台产生新会话的概率越大,时延越长;缓冲区容量增加,丢弃率明显降低.但是随着每个会话中分组呼叫数目的变化,时延变化不显著.
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| 关 键 词： | 通用分组无线业务 D-BMAP/D/1 性能分析 时延 丢弃率 |
| 文章编号： | 0372-2112(2004)05-0836-05 |
| 收稿时间： | 2003-05-12 |
Performance Analysis of GPRS Data Services |
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| ZHU Chang-hua,PEI Chang-xing,LI Jian-dong,MIN Fan-bao. Performance Analysis of GPRS Data Services[J]. Acta Electronica Sinica, 2004, 32(5): 836-840 |
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| Authors: | ZHU Chang-hua PEI Chang-xing LI Jian-dong MIN Fan-bao |
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| Affiliation: | State Key Lab.of Integrated Services Networks,Xidian Univ,Xi'an,Shaanxi 710071,China |
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| Abstract: | A D-BMAP/D/1 queuing model is applied to analyzing the performance of GPRS data services,such as mean RLC/MAC queue length,mean delay and loss rate of mini-packets,in which a simplified one-phase access procedure and different service rate are taken into account.The analysis results show that:Delay and loss rate are reduced with longer timer T 3182;Delay is increased under the greater probability with which mobile station in the idle state generates new session;Loss rate is decreased with larger buffer size.But delay is changed unclearly with the number of packet calls in a session. |
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| Keywords: | general packet radio service D-BMAP/D/1 performance analysis delay loss rate |
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