3G第三代移动通信技术.pptVIP

3G第三代移动通信技术;Exercises;;;;;The Third Generation (3G) is based on _____ technology. A. GPRS B. CDPD C. CDMA These are all derivatives of the World Wide Web aimed ______ connecting different communities of interest. A. on B. at C. by The fixed telephone service is global and the interconnection ______ from coaxial cable to optical fiber and satellite. A. varies B. operates C. begins;4.Judge true or false according to the text. Digital mobile phone systems add high speed data transfer to mobile devices. ( ) With Third Generation (3G), emails, multimedia attachments and other data will simply be downloaded to their mobile devices. ( ) Circuit switched data formats are much more common than their packet switched counterparts.( ) One of the most important application for packet data is Web browsing. ( ) The quality that the call is being made determines the data transmission rates of 3G. ( );;;Key words and Technical terms;;;;;;Expressions;most of all 最重要的是 ——To prepare for the future job, most of all, you must study hard. all the time 始终 ——You can have the Internet at your fingertips all the time through 3G. get ready for… 为…做好准备 ——We should get ready for a new world of speed, knowledge and convenience. ;Core Sentences Translation ;Multimedia services add high speed data transfer to mobile devices, allowing new video, audio, and other applications through mobile phones. ——多媒体服务使移动设备具有高速数据传输能力，从而允许通过移动电话进行视频、音频及其它新的应用。 We’ll expect high-speed access to the Internet, entertainment, information and electronic commerce services wherever we are. ——我们有望随处进行高速上网、娱乐、获得信息及电子商务服务。;Information will simply be downloaded to their mobile devices as soon as it is sent or requested. ——一旦被发送或接收，即可通过移动设备很方便地下载信息。 The shift to 3G services is causing a revolution in the underlying telecommunications system as phone compani