【作者】 姚凌； 纪红； 乐光新；

【Author】 Yao Ling Ji Hong Yue GuangxinBeijing University of Post and Telecommunication. Beijing 100876, China

【机构】 北京邮电大学电信工程学院；

【摘要】 在向下一代无线网络的演进过程中,新的问题和挑战不断的出现在我们眼前,其中包括网络结构的优化,信令协议的增强,无缝移动的端对端OoS保证以及灵活的业务提供.无线网络中这些技术的融合、创新以及面向用户的智能业务引发了4G无线网络概念的产生.本文主要论述4G网络中IP无线接入的关键问题,并提出一种面向4G的UMTS系统全IP接入方案为解决4G中端对端的QoS问题提供参考.更多还原

【Abstract】 Evolution toward next-generation wireless networks bring many problems and research challenges , which include advances in network architecture, enhancements in signaling protocols, guaranteeing of end-to-end QoS worldwide seamless mobility, and flexible service provision . The interoperability of these technologies, along with broadband wireless network innovations and user-oriented intelligent services will lead toward the so-called 4G wireless networks. In this article we discuss the key issues of IP radio access system that targets 4G networks. Furthermore, we propose a new IP radio access approach in UMTS, in order to best manage the QoS level inside the next- generation mobile networks.更多还原