中文摘要：

UMTS将为未来的信息系统提供业务平台．整个通信界都支持这一发展趋势。技术将不再被看作是问题．而是被看作是业务创新、业务多样化和业务区分的驱动力．UMTS将代表当前大多数移动网络基础设施自然演进的趋势。本文首先给出了控制平面和用户平面QoS管理功能．然后分析了UMTS与GSMCS、UMTS与GSMGPRS互通时的服务质量。

英文摘要：

UMTS will progress into the service platform for future information systems; the whole communication industry is behind it. Technology will no longer be perceived as an issue but as the driver for innovation and service variety and differentiation. UMTS will stand as the natural evolution of a majority of today＇s mobile network infrastructures. This paper presents the QoS management functions control plane, user plane QoS management functions, then analyzes the quality of service within interworking scenarios such as UMTS-GSM CS and UMTS-GSM GPRS.