下一代移动网络——UC(通用计算)的带头人?(下)  

Next Generation Mobile Networks -Pacemaker for Ubiquitous Computing? (Part II)

作　　者：胡贝尔.约瑟夫 

机构地区：[1]德国西门子集团公司

出　　处：《中国无线电管理》2003年第11期4-11,共8页China Radio Management

摘　　要：网络结构怎样变成"全IP"? UMTS网络是基于GSM网络基础构建的.它包含一个电路交换域,用于实时话音和视频;一个分组交换域,用于数据和媒体流.At the threshold of the new millenium, the telecommunication's focus changed considerably:from traditional wireline telephony oriented services and infrastructures to data based services, fromhomogeneous to heterogeneous networks, from non-intelligent devices to smart handhelds, PDAs andMobile Computers. The Internet with its world-wide web as well as wide area wireless networks such asGSM and mobile wireless communications in the local areas contributed to the dramatic changes in thisfield. The forecasts of both sectors' markets were underestimated every year. It is now time to think abouttheir future, their technologies and their markets' convergence - about the mobile Internet and aboutubiquitous computing (UC). Universal Mobile Telecommunication System (UMTS) - the third generationmobile service concept in the International Telecommunication Union (ITU) framework of IMT-2000 [2]will be a technology step to next generation mobile networks facilitating UC by applying Internet protocolsfor mobile services control and for end-to-end applications. Its evolution will be described in this paper.

关 键 词：下一代移动网络 UC 通用计算 网络结构 UMTS网络 分组交换域 电路交换域 质量策略 无线接入 

分 类 号：TN929.5[电子电信—通信与信息系统]