基于运营网络实现电信级IPQoS的解决思路与方案的研究  

Research on Solution of Providing Telecomm Grade IP QoS with Carrier Network

作　　者：薛强[1] 张光昭[1] 

机构地区：[1]中山大学电子工程系

出　　处：《电信科学》2008年第5期8-13,共6页Telecommunications Science

摘　　要：基于网络流量特性研究QoS技术已经陷入了困境,必须寻找更加实际的模型以适合运营商网络的发展需要。根据运营商网络的特征,借鉴TDM、PSTN、同步网、三层交换、MPLS、RSVP等技术的思想,提出一种解决方案:通过定时优先调度算法,将IP网络带宽分为两部分,一部分为"准同步"带宽,用于传输有QoS要求的信息流,另一部分为普通带宽,用于传输一般的信息流,基于这个思路实现了实时业务流的中继带宽、严格CAC及随路资源确认。最后根据实时业务流的特征提出改进实时业务流交换算法的思路。Research on IP QoS based on the traffic character runs into embarrassment, so it＇s necessary to find a practical model to meet carrier＇s needs. According to the features of carrier network, and absorbing the essence of the technologies such as TDM, PSTN, synchronous network, switching on layer 3,MPLS, RSVP, we get a new solution：through the timing priority scheduling arithmetic, we divide the bandwidth into two part, one is plesiochronous to transfer the data with QoS required, another is common to transfer traffic in general. Based the arithmetic above, we realize the trunk planning for real-time traffic, strict CAC and resource confirmation with path coupled. Finally, we provide solution to improve efficiency of switching real-time traffic.

关 键 词：准同步 中继 呼叫接纳控制 资源确认 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术] TP393.08[自动化与计算机技术—计算机科学与技术]