论文部分内容阅读
通信网的演进和发展,要求在下一代网络中提供具有QoS保证的电信级业务。在对基于SIP的VoIP系统的QoS控制技术进行研究的基础上,深入研究SIP协议支持QoS控制功能的扩展机制。分析利用SIP/SDP进行QoS预置条件设置和协商的模型,给出基于状态表的生成规则和实现机制.
The evolution and development of communications networks require the delivery of carrier-class services with guaranteed QoS in next-generation networks. Based on the research of QoS control technology of SIP-based VoIP system, the paper further studies the extension mechanism of SIP protocol supporting QoS control function. The model of using SIP / SDP to set and negotiate QoS preconditions is analyzed. The generation rules and implementation mechanism based on state table are given.