UMTS核心网中基于区分服务的QoS控制模型

3G新业务的发展，要求UMTS提供端到端QoS控制。文章构建了在UMTS核心网中为不同业务类提供QoS保证的区分服务模型，提出了从UMTS业务类到DiffServ域服务等级的映射方案，设计了一种新的队列调度算法，采用优先级和分离机制，在流量调整器配合下可满足不同业务类的QoS要求。最后，通过模拟实验证明了模型的有效性。

A QoS Control Model Based on DiffServ in UMTS Core Net

With the development of new services in 3G, UMTS is required of end-to-end QoS support. The paper builds a DiffServ model to offer QoS guarantee for the services in UMTS core network. We map UMTS service classes to DiffServ domain, design a new queue scheduling method, which can offer differential services for the applications with the cooperation of traffic conditioning by priority and separation mechanisms. The model can satisfy requires of delay and jitter, and guarantee the interactive and background stream full utilization in the bandwidth fairly. At last, the efficiency of the model is validated by simulation.