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Other 3G News
Qualcomm and Teleepoch
Enter Into a 3G CDMA Subscriber Unit License Agreement, October
6, 2007
MTN chooses Cambridge Broadband
Networks for multi-service wireless network in Rwanda, October 6,
2007
Brazilian government to
publish 3G bidding rules soon, October 6, 2007
KTF 3G service suffers
from technical problems, October 6, 2007
Argentina’s Personal
lunches 3G service in Rosario, October 6, 2007
Russia has it's first 3G
network, October 6, 2007
AT&T could drop Alcatel-Lucent
as 3G mobile network supplier, October 6, 2007
Enea Extends License Agreement
with ZTE for 3G Handsets, October 2, 2007
LG to unveil premium handsets
in Brazil, October 2, 2007
KTF 3G subscribers doubled
in less than 3 months, October 2, 2007
3G policy in India will
be non-uniform, October 2, 2007
- previous news
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New 3G mobile technology TD-SCDMA gaining world-wide acceptance
date: April 18, 2001 - source by: 
siemens.com
First public demonstration of TD-SCDMA by Siemens and CATT
TD-SCDMA is enjoying worldwide acceptance within the framework of international
standardization. In a recent decision the "Third Generation Partnership
Project" (3GPP), an umbrella organization of all the major international
standardization bodies for third generation mobile radio (3G), acknowledged
TD-SCDMA (Time Division Synchronous Code Division Multiple Access) as
a global standard for UMTS (Universal Mobile Telecommunications System).
Furthermore, the Siemens Information and Communication Mobile Group (IC
Mobile) and CATT (China Academy of Telecommunications Technology) conducted
the world's first public demonstration of wireless transmission via a
TD-SCDMA air interface in front of Chinese media and mobile network operators.
TD-SCDMA is gaining wide acceptance on the international standardization
front. 3GPP’s recent decision puts the technology, jointly developed
by Siemens IC Mobile and CATT and also known as "TDD Low Chip Rate", on
an equal footing with the recognized "High Chip Rate" transmission methods
FDD (Frequency Division Duplex or Wideband-CDMA) and TDD (Time Division
Duplex) within UMTS. This worldwide recognition will guarantee that from
the technical point of view the UMTS transmission methods FDD, TDD and
TD-SCDMA can intercommunicate seamlessly with each other and with the
current GSM (Global System for Mobile Communications) standard.
The first public demonstration of TD-SCDMA with wireless data transmission
took place in the joint research and development center in Beijing and
was realized between two PCs, connected via a wireless link with a mobile
radio base station and a prototype terminal device. Around the middle
of the year, the test network will enable mobile network operators in
China to run the first trials with TD-SCDMA. Network solutions for commercial
use are set for launch at the beginning of 2002.
Background information
The most important challenge facing 3G systems regards their suitability
both for symmetric, circuit switched services, such as voice and video
transmission, and also increasingly for asymmetric, packet switched services
such as mobile internet access, for example. This is why CATT and Siemens
IC Mobile have been collaborating in China since 1998 on the joint development
of TD-SCDMA, as the radio technology for third generation mobile radio.
TD-SCDMA takes account of the wide variety of different 3G mobile radio
services, and combines two leading technologies: A TDMA (Time Division
Multiple Access) system with an adaptive CDMA (Code Division Multiple
Access) component operating in the synchronous mode. These combined radio
transmission system principles permit optimum usage of the radio range
allocated in each case to 3G – even in the case of non-paired frequency
ranges.
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