| 异构网络中基于上下文转移的VoIP QoS研究 |
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| 引用本文： | 阎英,蒋青,徐梅,刘伯红. 异构网络中基于上下文转移的VoIP QoS研究[J]. 重庆邮电学院学报(自然科学版), 2009, 0(5) |
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| 作者姓名： | 阎英 蒋青 徐梅 刘伯红 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院;重庆邮电大学计算机科学与技术学院; |
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| 基金项目： | 重庆市教委科研项目(KJ080522) |
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| 摘 要： | 随着异构网络的融合,如何在异构网络环境下保证VoIP的QoS已成为VoIP发展必须解决的关键问题。针对这个问题,提出了一种基于上下文转移技术并结合MIPv6,DiffServ和MPLS这3种技术的QoS方案。该方案采用上下文转移技术来减少移动节点切换期间的时延和丢包,并将DiffServ和MPLS结合在骨干网中提供QoS保障。由于MPLS具有与移动环境较好结合的特点,在异构网络环境下能够为VoIP服务提供端到端的QoS保障。仿真结果表明该方案在延迟、抖动、丢包率和切换延迟等QoS性能上都有明显的改善。
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| 关 键 词： | 异构网络 VoIP 上下文转移 服务质量 |
Research on QoS of VoIP in heterogeneous networks based on context transfer |
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| YAN Ying,JIANG Qing,XU Mei,LIU Bo-hong. Research on QoS of VoIP in heterogeneous networks based on context transfer[J]. Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition), 2009, 0(5) |
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| Authors: | YAN Ying JIANG Qing XU Mei LIU Bo-hong |
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| Affiliation: | 1.College of Communication and Information Engineering;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China;2.College of Computer Science and Technology;P.R.China |
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| Abstract: | With the convergence of heterogeneous networks,how to guarantee the QoS of VoIP has become a key issue to develop VoIP in heterogeneous networks.To solve this problem,this paper puts forward an improved scheme with the combination of MIPv6,DiffServ and MPLS.This scheme uses the technology of context transfer to reduce latency and packet loss during handover happened,and adopts the combination of MPLS and DiffServ to provide QoS guarantee in the backbone network.Since the MPLS have a better combination featu... |
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| Keywords: | heterogeneous networks VoIP context transfer QoS |
| 本文献已被 CNKI 等数据库收录！ |
