1、附录 一、英文原文： 3GTECHNOLOGY Abstract The 21 century is an ages of the information economy, being the 3G TECHNOLOGY of representative technologies this ages, will be at very fast speed develop soon in continuously creatively, and will go deep into the peoples work, life and study. Therefore, control this
2、 technology and then seem to be more to deliver the importance. Now I mainly introduce some knowledge of the 3G TECHNOLOGY. Keywords GPRS, TD-SCDMA， WCDMA , EDGE ,CDMA2000 , WAP , SYMBIAN 3 G, the third Generation, known as the Chinese meaning is refers to the third Generation of digital communicati
3、on. The growth of the global 3G was rapidly in recent years. From 2002 to 2008, the 3 G operators have been gradually from the original is pale and management to the accelerated development .By June 2008, global 3 G users accumulative total up to 709 million, the total 84 countries and regions issue
4、d 3 G licenses, including effective certificate for 249 copies. Our country of 3 G development is relatively later than the advanced countries. In 2009, China was officially forward 3 G time. In the economic crisis of the downturn state, Chinas ministry of information industry issued three third gen
5、eration mobile communication (3 G) license for China mobile, China telecom and China Unicom . China Mobile use our country with independent intellectual property rights of the 3 G standard TD-SCDMA , China Telecom get CDMA2000 license and China Unicom WCDMA license. 2009 as China3 G formal first com
6、mercial . Although the technology behind 3G may seem complicated, the ways in which 3G will affect all of our lives are easy to imagine. Just imagine having a combined camera, video-camera, computer, stereo, and radio included in your mobile phone. Rich-media information and entertainment will be at
7、 your fingertips whenever you want anywhere there is a wireless network. Mobile communication is moving from simple voice to rich media, where we use more of our senses to intensify our experiences. But not all of this will happen at once. 3G is an evolution to a communications ideal that no one com
8、pletely understands yet. What we do know is that mobile multimedia will hit the Japanese markets in 2001, and Europe and North America will follow soon after. 3G brings together high-speed radio access and IP-based services into one, powerful environment. The step towards IP is vital. IP is packet-b
9、ased, which in simple terms, means users can be on line at all times, but without having to pay until we actually send or receive data. The connectionless nature of IP also makes access a lot faster: file downloads can take a few seconds and we can be connected to our corporate network with a single
10、 click. 3G introduces wideband radio communications, with access speeds of up to 2Mbit/s. Compared with todays mobile networks, 3G will significantly boost network capacity - so operators will be able to support more users, as well as offer more sophisticated services. 3G - At home 3G is going to af
11、fect our home and social lives in many ways. The services that 3G enables will help us to manage our personal information, simplify tasks such as grocery shopping, make better use of our time and offer services that are just fun to use. Operators will be able to develop myriad new service opportunit
12、ies to attract and retain new customers. Here are some examples: Youre sitting on a train and use this dead time to log on to your bank account, check your balance and pay a few bills - all through your 3G device. You save time and can be smarter about managing your finances. On a touring vacation,
13、you arrive in a new city. You havent made any reservations in advance, because you can do this when you get there, by using your 3G handset to obtain up-to-date information, including hotel vacancies. Having booked a room, you can use your mobile to view video clips of local tourist attractions and
14、talk to someone from the local tourist information bureau at the same time. 3G - At work 3G will not just support the needs of businesspeople who travel a lot, but will also help new, flexible working practices, such as home-working and remote access to corporate networks outside traditional working
15、 hours. Businesspeople are often high-volume airtime users, so they represent a big opportunity for mobile operators. Here are some examples: At work you receive a message from your smart refrigerator at home. The message tells you that certain items need restocking and an order has already been pre
16、pared for the local grocery store, which you can approve, so that your groceries are ready to collect on the way home. You are on the road, and urgently need to discuss a draft presentation with a number of colleagues back in the office. Pulling into a service station, you use your 3G device to hold
17、 a telephone conference with your colleagues and, at the same time, you can all view the draft presentation and make changes on line. A maintenance engineer is repairing some equipment on a clients premises and hits a problem. Using his 3G device, he contacts his department and downloads a demonstra
18、tion video that guides him through the repair process. TECHNOLOGY 3G brings together two powerful forces: wideband radio communications and IP-based services. Together, these lay the groundwork for advanced Mobile Internet services, including personalized portals, infotainment, mobile commerce and u
19、nified messaging -encompassing high-speed data, superior quality voice and video and location-based services. Making 3G a reality depends on technology developments in different areas. These include amendments to the radio interface to support wideband communications and in the core network. Supporting technologies, such as WAP and Bluetooth, also have an important role to play. This section provides a brief overview of some of the main technologies and developments involved. Ericsson
