MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
 ·Cox HSI
| The 3g speeds on AT&T suck.
Comparable to Sprint EVDO Rev 0 in OKC. Rev A blows AT&T's EVDO out of the water, at least in Oklahoma.
Off Topic: I was looking at AT&T's 3g coverage map yesterday. What the hell is the problem? How is it that Sprint & Verizon have EVDO rev.a coverage in extremely rural areas and up and down every major highway...but AT&T can't even cover the major highways with 3g? I don't get it.
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MCSE, ACSA, and a lot more |
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RR Conductor
RailRoadDude
Premium
join:2002-04-02
Redwood Valley, CA | AT&T has 3G coverage in my very rural area (Ukiah area in Mendocino County, NW California), and has recently turned up quite a bit of rural 3G here in NorCal. |
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en102
Canadian, eh?
join:2001-01-26
Valencia, CA
·RoadRunner Cable
 ·DSL EXTREME
| reply to MarkyD
Problem in many areas have been the spectrum allocations in many markets, and issues with capacity on voice+data.
3G requires at least 5MHz of spectrum (paired no less).
EVDO requires 1.25MHz of spectrum (paired)
3G runs both voice and data across 3G
EVDO runs data only.
Pushing both voice+data over a 5MHz chunk in many areas doesn't cut it (metro), and in many areas, coming up with an extra large chunk of spectrum requires taking it away from GSM. This is why T-Mobile has to deploy its 3G in 1700/2100 MHz space.
Eg. Los Angeles market has a decent amount of spectrum to begin with. 22.5MHz paired - spread over 850/1900MHz.
Currently AT&T runs:
850MHz GSM (cell A block = 12.5MHz paired)
1900MHz GSM (pcs D block = 5MHz paired)
1900MHz UMTS/WCDMA (pcs B3 block = 5MHz paired)
In theory, all 3G devices will hit that 5MHz of 3G spectrum for voice and data. With spectrum capacity being maxed, calls 'should' handoff to GSM (happens ~50% in my case). If this was set for data only, it would work much better right now.
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Canada = Hollywood North |
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huntml
join:2002-01-23
Mullica Hill, NJ
·Comcast
| reply to MarkyD
As a lot of ATTM subs will tell you -- all you have to do is go to, say, the ATTM-related boards on Howardforums -- is that since the iPhone 3g launch ATTM's 3g network has shown all the signs of being horribly oversubscribed in a lot of places.
So it's a good thing they anticipated a 5x load increase and are seeing only 3x. If there had been a 5x load increase the 3g network would be essentially unusable in a lot of places. |
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ultracooldave
@verizon.net
| reply to MarkyD
They are only using 1 of the 4 GSM bands so coverage sucks.
It is not just I-Phone, my Samsung drops calls all the time and you cannot turn off 3G, in Australia I never had 1 dropped call anywhere on 3G although the I-Phone still has problems there. |
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pepe126123824
@comcast.net | reply to MarkyD
ATT has *EVDO* in OK? LOL Think again.
Why is it so hard for some people to understand how much is involved in rolling out new technology on such a massive scale(?) |
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