电信科学 ›› 2014, Vol. 30 ›› Issue (8): 73-78.doi: 10.3969/j.issn.1000-0801.2014.08.011

• 研究与开发 • 上一篇    下一篇

VoIP系统在下一代网络中的QoS保障

彭红姣,刘尚东,陈夏梅   

  1. 南京邮电大学计算机学院 南京210003
  • 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    江苏省自然科学基金资助项目;南京邮电大学实验室建设与设备管理研究课题基金资助项目

QoS Guarantee for Next Generation Network in the VoIP System

Hongjiao Peng,Shangdong Liu,Xiamei Chen   

  1. School of Computer Science & Technology, Nanjing University of Posts and Telecommunication, Nanjing 210003, China
  • Online:2014-08-15 Published:2014-08-15

摘要:

针对VoIP系统的质量问题,将3GPP IMS中基于业务的网络策略控制机制融入VoIP 的QoS 保障中,以SIP作为信令协议,提出具有QoS能力的SIP VoIP系统网络功能结构、QoS分层控制模型。详细分析了其QoS呼叫控制过程,给出了扩展的SIP代理服务器和UE的功能要求以及路由器对QoS信息的支持。新增策略决策功能模块能力,详细分析了上述功能实体之间接口的作用和交互的QoS信息。通过在VoIP系统SIP-QoS代理服务器的各QoS功能模块和原型系统中的应用,验证了模型的可行性和有效性。

关键词: IP语音通信, 下一代网络, 服务质量, 会话启始协议

Abstract:

For the QoS of VoIP system, integrating the service based mechanism of network policy control within 3GPP IMS into QoS of VoIP, the SIP was adopted as signaling protocol. The function architecture with QoS capabilities and model of layered QoS control was proposed. Based on the investigation of QoS calling control process, a SIP delegate, feature requirement of UE and router with QoS information were introduced. The module armed with policy decision ability was created. The QoS interacting messages between interfaces of all modules were studied. Through utilizing the suggested mechanism in QoS modules and prototype of VoIP SIP-QoS delegating server, feasibility and availability were validated.

Key words: VoIP, NGN, QoS, SIP

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