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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Mobile Broadband Trial System Deployment in Tokyo
July 10, 2003
IPMobile Corporation- Tokyo, Itsuo Sugimura, CEO, announced the company
has received trial license on (April, 2003) to deploy “Mobile Broadband”
Trial System using TD-CDMAtechnology. IPMobile has built three cell-sites
inside Tokyo metropolitan area with subscribers using both PCMCIA cards
and modems with USB and Ethernet interfaces. Professor Masao Nakagawa
and Special Associate Professor Riaz Esmailzadeh of Keio University, who
together advocated for the first time in the world the advantages of TD-CDMA
in 1991, will be part of the team to support the trial. While the 3G Systems
that have been introduced in Japan to date are primarily focused on voice
traffic, TD-CDMA is optimized for data traffic and Internet usage. The
trial system will employ TD-CDMA technology from IPWireless (San Bruno,
Calif.) that has been tried and commercially provided by many operators
worldwide.
The major objective of deploying the trial system is to conduct a series
of radio transmission experiments using UMTS TDD technology, a branch
of the IMT-2000 standards. Since the system employs Time Division Multiplex,
it can better match the traffic pattern that is typical for Internet access
- supporting the high ratio of downlink traffic similar to ADSL. Testing
of the system while moving at highway-speeds has already been completed.
The system will use the 2010-2025 MHz frequency band that has been designated
as TDD frequency band of IMT-2000 by ITU . UMTS TDD consists of High Chip
Rate (3.84Mcps) known as TD-CDMA and Low Chip Rate (1.28Mcps) that is
also called TD-SCDMA. The trial system will adopt TD-CDMA (High Chip Rate)
since it supports much higher bandwidths.
Professor Masao Nakagawa remarked, “TD-CDMA is the technology initially
developed in Japan. It has a lot of technical features and capabilities
that enables a `Ubiquitous Network’. ITS will watch with keen interest.
The existing cellular operators adhere to the 3G Systems using FD-CDMA,
which reminds me of NTT insisting on ISDN several years ago. In the fixed-line
environment, the Broadband Era employing ADSL has certainly arrived before
the time of FTTH. I will not be surprised if the similar situation occurs
for mobile domain.”
Itsuo Sugimura, President of IPMobile, stated, “This system can be deployed
to offer Broadband access services easily and economically not only in
major cities but rural areas where ADSL and FTTH are hardly available.
Thus I think we should start talking with municipalities and local Internet
Service Providers.” Sugimura added, “We look forward to contacts from
anyone who is interested in this technology and business opportunities
both at home and abroad. Existing and potential partners worldwide want
Japanese and Korean companies who are well known for their ability to
design small, light and high-quality equipment to join.”
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3G Motorola A920
