3G有两个有利的而优势：宽带语音通信和易IP为基础的服务。综合在一起,这些为先进的移动英特网服务奠定了基础,包括个性化的入口,你的手机将会自动接收最新的电视信息,提供高品质的声音和图像。使3G变为事实需要依靠不同地区相关技术的发展。它在改善介绍无线通信分界面,支持多频率通信扮演了重要的角色。
attractions and talk to some one from the local tourist information at the same time
3G At work
3G will not just support the needs of business people 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 hours. Business people are often high-volume air time 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 tl7at certain items need restocking and an order has already been prepared 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 a telemeeting 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 client's premises and hits a
problem. Using his 3G device, he contacts I) is department and downloads a demonstration video tl7at 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 unified mess aging -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 die 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 support s all of these technologies and has played an active role in their development.