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DoCoMo Testing 4G's Speed Limit

Article Comments  10  

Feb 24, 2006, 4:34 PM   by (staff)

DoCoMo yesterday announced it achieved a 2.5Gbps download while traveling at 20 kmh over a 4G network test network. Although DoCoMo has not launched HSDPA or any other upgraded of 3G yet, the Japanese operator is already working on the development of 4G. As it has in the past, DoCoMo is basing the new network on modified versions of proposed standards. This test network improves the speed of proposals by the International Telecom Union (ITU) and early development by the European Union. DoCoMo's system uses 6 simultaneous transmissions with 6 antennas and an advanced encoding algorithm to achieve this high data rate, but it comes at a cost. The transmission is spread over 100 MHz of spectrum.

more info at NTT DoCoMo »



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This forum is closed.


Feb 25, 2006, 12:39 PM


Rolling Eyes thanks alot attws. why couldn't you make that a clause too. Evil or Very Mad Rolling Eyes
Well, how about this..

CINGULAR has already deployed HSDPA and probably will be the first HSDPA operator in the world..

So just to re-iterate..
1> FIRST in HSDPA Commercialization, BEFORE DoCoMo
2> HSDPA with data rates on initial phones/ data...

Feb 25, 2006, 1:31 AM

Cant wait till it comes to the US

I can't wait till US phones have the capabilities of the Japaneses! »
Dont hold your breath.

Feb 25, 2006, 8:15 PM

Just like most concept cars, never see daylight..

100 MHz spectrum... even the best optimizations/ spectrum conservation techniques will probably not bring it down to any acceptable range..

which operator in the world has access to that much spectrum in the first place?

in the US, you have the government agencies fighting the telecom/wireless operators fighting the tv/radio analog broadcastors all for measly amounts of airwave..

similar stuff in UK where there is constant struggle between the operators..

Hence, this 4th generation experiment from DoCoMo is just that. Probably not going to be the basis of the real 4th generation technology..

Feb 24, 2006, 6:37 PM


Thats preettty speedy! but thats ALOT of spectrum required to get it that fast........... Landline solutions are going to be left in the dust if wireless keeps getting so quick. Tha fastest they go is well... fiber sorta has an undiscovered speedcap so nevermind.......
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