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AT&T Completes 850MHz Roll-Out in NYC

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linked Yahoo/PCMag article is poorly researched

WiWavelength

Aug 21, 2009, 9:37 AM
http://tech.yahoo.com/news/zd/20090820/tc_zd/243370 »

"In New York, San Francisco and many other places, AT&T owns a large 40 Mhz chunk of valuable 850-MHz spectrum."

Wrong. In a given market, a Cellular 850 MHz licensee controls the Cellular A-side 25 MHz license, Cellular B-side 25 MHz license, or both (for a total of 50 MHz). No Cellular 850 MHz licensee controls "a large 40 Mhz chunk" in any market.

In both NYC & SF, AT&T controls the (former AT&TWS) Cellular A-side 25 MHz block of Cellular 850 MHz spectrum.

For other examples, in Atlanta, AT&T controls the (former BellSouth) Cellular B-side 25 MHz block of Cellular 850 MHz spectrum and, in DFW, the (former AT&TWS) Cellular A-side 25 MHz and (former SBC) Cellular B-side 25 ...
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Jayshmay

Aug 21, 2009, 9:45 AM
That's a bunch of hard to understand advanced wireless talk there. First what the heck is the difference between "Cellular 850" & "GSM 850"?

Also, this stuff about 25mhz chunks of 850, to me that sounds like there is 825mhz MISSING from the signal my phone is recieving.
So which is it that ATT is upgrading to 25mhz? Or 850? This is some hard to understand stuff.

Also, I think the reason that Yahoo article doesn't make much sense is because it was an ATT spokesperson, those sorts of people say exactly and only what they're told to say, nothing more. They're traineded to talk to the press.
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WiWavelength

Aug 21, 2009, 9:57 AM
Jayshmay said:
That's a bunch of hard to understand advanced wireless talk there. First what the heck is the difference between "Cellular 850" & "GSM 850"?


Cellular 850 MHz is a spectrum band. GSM 850 is simply GSM deployed in the Cellular 850 MHz spectrum band.

Jayshmay said:
Also, this stuff about 25mhz chunks of 850, to me that sounds like there is 825mhz MISSING from the signal my phone is recieving.
So which is it that ATT is upgrading to 25mhz? Or 850? This is some hard to understand stuff.


No, it is not that difficult. You just have to understand the difference between frequency & bandwidth, as both are measured in MHz.

AJ
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Rich Brome

Aug 21, 2009, 10:45 AM
Jayshmay said:
First what the heck is the difference between "Cellular 850" & "GSM 850"?

Celluar is 850. The "cellular" band is more commonly called the 850 MHz band, or sometimes the 800 MHz band. They're all names for the same thing. It's just a band, with no specific reference to technology.

"GSM 850" is GSM technology operating in the 850 (cellular) band, as opposed to CDMA 850 or WCDMA 850, for example.

Also, this stuff about 25mhz chunks of 850, to me that sounds like there is 825mhz MISSING from the signal my phone is recieving.
So which is it that ATT is upgrading to 25mhz? Or 850? This is some hard to understand stuff.

850 MHz is not an exact number, it's a simplifi...
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Jayshmay

Aug 21, 2009, 10:55 AM
So is Block A any better than Block B? Or are the equal?

Thanks Rich, you've been helpful. Btw, Eric Cartman got 2.2mbps on the Iphone 3G (not the S) that was in Atlanta that now has 850 3G. Not bad at all.

I wonder which cities are next? I hope Las Vegas will be before the end of the yr!
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Rich Brome

Aug 21, 2009, 10:57 AM
Jayshmay said:
So is Block A any better than Block B? Or are the equal?

Equal.
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saschasegan

Aug 21, 2009, 10:20 AM
Thanks, we're fixing that error right now.

Sascha
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