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1、3G移动通信技术简介Introduction to 3G mobile communications technology,什么是3G?What is 3G?,“3G”（英语 3rd-generation）是第三代移动通信技术的简称是指支持高速数据传输的蜂窝移动通讯技术。3G服务能够同时传送声音(通话)及数据信息.3G(English 3rd-generation)is the third generation mobile communication technology to support high-speed data referred to is the transfer of ce
2、llular mobile communications technology.3G services can simultaneously transmit voice(call)and data information.,3G与2G的主要区别 The main difference between 3G and 2G,3G与2G的主要区别是在传输声音和数据的速度上的提升，它能够在全球范围内更好地实现无线漫游，并处理图像、音乐、视频流等多种媒体形式，提供包括网页浏览、电话会议、电子商务等多种信息服务，同时也要考虑与已有第二代系统的良好兼容性。The main difference betwe
3、en 3G and 2G voice and data in the transmission speed of the upgrade,it can be better in the global wireless roaming,and process images,music,video streaming and other media in the form of services including web browsing,conference calls,e-commerce and other information services,taking into account
4、also the second-generation system with the existing good compatibility.,3G时代能干什么呢？3G era can you do?,3G将会给生活带来全新享受 3G就是出租车里的视频会议；3G就是你坐火车也不会错过的肥皂剧；3G就是从现场发回总部供分析用的图像；3G就是与朋友共享你在摩洛哥的美妙假期。3G will bring new enjoyment to life 3G video conference is a taxi;3G is that you will not miss the train soap oper
5、a;3G is sent back to headquarters from the field of image for analysis;3G is with friends and share your wonderful holiday in Morocco.,世界3G发展状况Development of the worlds 3G,2000年5月，国际电信联盟正式公布第三代移动通信标准，我国提交的TD-SCDMA正式成为国际标准，与欧洲WCDMA、美国CDMA2000成为3G时代最主流的三大技术之一。中国联通与中国网通合并，中国网通的基础电信业务并入中国联通，中国铁通并入中国移动，国
6、内电信运营商由6家变为3家。May 2000,the International Telecommunication Union officially announced the third generation mobile communication standard TD-SCDMA in China officially submitted become the international standard,and the European WCDMA,CDMA2000 as 3G era the United States the most mainstream of the thr
7、ee technologies.China Unicom and China Netcom,China Netcoms basic telecom business into China Unicom,China Railcom,China Mobile,into the domestic telecom operators by a 6 to 3 home.,中国3G的发展情况The development of 3G in China,根据电信业重组方案，3G牌照的发放方式是：中国移动获得TDSCDMA牌照，（国产品牌）中国电信获得CDMA2000牌照（不支持视频通话），中国联通获得WCD
8、MA牌照（网速最快，使用人数最多）According to telecom industry restructuring,3G license issuance way:China Mobile TD-SCDMA license to obtain,(domestic brands)to obtain China Telecom CDMA2000 license(does not support video calls),China Unicom WCDMA license(the fastest speed,with the number of up,Q:What kind of 3G ea
9、sy to use it?A:China Unicom(中国联通),主要业务经营范围包括：GSM移动通信业务、WCDMA移动通信业务、固定电话，宽带通信Main business scope includes:GSM mobile communication services,WCDMA mobile communication services,fixed telephony,broadband communications,中国联通数据类资费China Unicom data class rates,中国联通语音类资费Voice-class rates China Unicom,I und
10、erstand 3G(我自己理解的3G),1 可以视频通话2 全国无漫游，接听免费，不区分长途和市话3 上网速度很快，联通无线网卡的上行速率是7.4M（1M=1024K）4 可以将语音和数据同步进行。1 can video call2 country without roaming,free incoming calls,does not differentiate between long distance and local calls3 online fast,Unicom wireless card in the uplink is 7.4M(1M=1024K)4 can be voice and data simultaneously.,结束语end,谢谢大家的观看，再见！Thank you for watching,bye!,
