| IP核心网中VoIP业务服务质量的初步研究 |
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| 引用本文： | 孙亮,程时端,林宇,崔毅东.IP核心网中VoIP业务服务质量的初步研究[J].高技术通讯,2005,15(9):13-18. |
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| 作者姓名： | 孙亮 程时端 林宇 崔毅东 |
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| 作者单位： | 北京邮电大学网络与交换国家重点实验室,北京,100876 |
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| 基金项目： | 863计划（2002AA103063;2003AA121220）和973计划（2003CB314806）资助项目. |
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| 摘 要： | 通过对比传统电话网的语音业务特点对IP核心网中的VoIP业务流进行了模拟，并通过仿真对IP核心网中VoIP业务流特性进行了观察分析。结果发现，大量VoIP业务汇聚产生的业务流具有突发性小、较平稳的流量特性，因而不必为其分配过多的带宽资源；研究了Internet自相似业务流特性对VoIP业务性能的影响，提出了在VoIP业务中采用高优先调度机制等技术来保障VoIP服务质量的网络设计原则。
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| 关 键 词： | VoIP IP网络 业务流量 服务质量 VoIP业务 IP服务质量 IP核心网 自相似业务流 Internet 语音业务 流量特性 带宽资源 业务性能 |
| 收稿时间： | 2004-12-21 |
| 修稿时间： | 2004-12-21 |
Preliminary research on QoS mechanism for VoIP in core IP networks |
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| Sun Liang,Cheng Shiduan,Lin Yu,Cui Yidong.Preliminary research on QoS mechanism for VoIP in core IP networks[J].High Technology Letters,2005,15(9):13-18. |
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| Authors: | Sun Liang Cheng Shiduan Lin Yu Cui Yidong |
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| Affiliation: | State Key Laboratory of Networking and Switching, Beijing University of Posts and Telecommunications, Beijing 100876 |
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| Abstract: | The VolP traffic in core IP networks is simulated by means of comparing it with the voice traffic in traditional telephone networks. Then, the natures of VolP aggregate traffic and the impact of self-similar interact traffic are observed and analyzed by the simulation, and the results show that the aggregate VolP traffic has some characteristics of little burst and stationary., so no more bandwidth need to be allocated to it. Finally, some priority scheduling methods about guaranteeing the VolP QoS in core IP networks have been concluded. |
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| Keywords: | VoIP IP network traffic quality of service (QoS) |
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