| you are here: Home >> Introduction into 3G |
|
|
||||||||||||||||||||||||||||||||||||||||||
|
TECHNOLOGY
|
FEATURES
|
||||
| 1G | AMPS | Advanced Mobile Phone Service |
-Analog voice service |
||
| 2G | CDMA | Code Division Multiple Access |
- Digital voice service |
||
| TDMA | Time Division Multiple Access | ||||
| GSM | Global System for Mobile Communications | ||||
| PDC | Personal digital cellular | ||||
| 3G | W-CDMA | Wide-band Code Division Multiple Access |
- Superior voice quality |
||
| CDMA-2000 | Based on the Interim Standard-95 CDMA standard | ||||
| TD-SCDMA | Time-division synchronous code-division multiple-access | ||||
The packet based IP (Internet Protocol) technology that will form the core of future services will mean we can be on-line constantly: e-mail messages with file attachments will download to hand-held terminals instantaneously; at the push of a button we’ll be connected to our company network. We’ll have this "anytime access" with charging geared more towards how much information we are sending than to how long we are connected.
There will also be a growing need for mobile users to interact with machines, and for machines to interact with other machines, over radio connections – reporting faults, ordering new stock, or relaying location details whenever required.
Companies outside telecoms today will take advantage of 3G to develop innovative new services.
|
3G: what's new? 3G is designed to deliver:
|
When will 3G be rolled out?
NTT DoCoMo already launched the world's first commercialised third-generation "FOMA" mobile communication service on October 1, 2001. "FOMA" is the name used in Japan for NTT DoCoMo's 3G service.
The question of 3G deployment is not a technical issue, but a regulatory and economic one. Subscriber demand is the key factor: user expectations for mobile services are being raised, and for any successful 3G license bidder time to market will be critical. The way 3G is rolled out in a particular market will depend entirely on the business plans of the mobile operators, and the license requirements imposed by the regulatory authorities.
Today's mobile network operators can gain the vital business and market experience of providing high-speed mobile data services by introducing packet switching networks such as GPRS (General Packer Radio Service). By the time the new WCDMA, EDGE and cdma2000 wideband radio interfaces are standardized and commercially available, the market will already be attuned to the possibilities of 3G. Japan was the first market to announce specific plans to introduce wideband radio networks based on WCDMA technology. As a result, it is expected that 3G will go into service first in Japan. Currently, WCDMA networks are scheduled to be in operation there in 2001. The 3G licensing process has ompleted in many countries in Europe, and the first wideband radio networks are expected to enter commercial operation in 2002. Before then, GPRS will be introduced into GSM networks, to increase user bandwidth. The first GPRS systems was introduced early in 2000 in France but due to handset shortest and technical problems of the advance overall network architecture, it was not a success.
The Speed

source: SK Telecom
3G enables users to transmit voice, data, and even moving images. In order to realize these services, 3G improves the data transmission speed up to 144Kbps in a high-speed moving environment, 384Kbps in a low-speed moving environment, and 2Mbps in a stationary environment. 3G provides services like Internet connection, transmission of large-scale data and moving contents photographed by digital cameras and videos, and software downloading.
At present, maximum data transmission speed is 64Kbps offered by NTT DoCoMo's 3G services, and toward early 2001, 384Kbps will be possible. At the early stage of 3G services, an 144Kbps-transmission speed is expected. By around 2005 when 3G is in general use, a maximum speed of 2Mbps will be possible.
| |
|
www.3GNewsroom.com, 2001 - 2007, disclaimer,
contact us
|