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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4G ready by end of 2004?
June 20, 2003
US standards body the IEEE is expecting to have the standard for 4G in
place by the end of next year, despite the delays and uncertainties associated
with the commercial roll-out of 3G.
The IEEE standard for 4G - 802.20 - will be fixed by the end of next
year and will support data rates up to 4Mbit/s with frequencies up to
3.5GHz, according to Rudy Lauwereins, vice-president of IMEC (International
Microelectronics Centre) at Leuven, Belgium.
The 4G standard will allow cell-phones to operate from vehicles travelling
at up to 250km/hr, and could be based on OFDM, CDMA and multi-antenna
techniques.
Lauwereins said, that the industry need a 'system of systems' connecting
wireless and wireline telephony with WiFi and satellite communications.
"We need a flexible air interface," he said, in order to facilitate seamless
hand-overs between different access technologies and to avoid the need
to carry around several terminals each complying with different standards.
"You have only 100ms for the arrival time of packets but you can't do
a handover in 100ms using the 'break before make' method," said Lauwereins,
"a 'make before break' soft handover allows it to happen in 100ms".
He expects it will take five years for the market to introduce a flexible
air interface and that the interfaces will eventually be wearable. "We
can do it now, but we can't do it with low enough power and it wouldn't
be flexible enough and there'd be problems with the quality of service,"
said Lauwereins.
For handovers between WiFi and wireless phone calls, Lauwereins expects
a product to be on the market by the end of this year. "It will have two
different digital parts and two different RF parts and a MAC allowing
you to switch from one to the other," said Lauwereins. It will come in
the form of a PCMCIA card.
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3G Motorola A920
