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How is the spectrum split up?

wb

Nov 6, 2003, 11:01 PM
We have a lot of carriers out there with a lot of licenses. So how do they keep it all sorted out? What's the ins and outs of this swath stuff?

In an interesting article in rcrnews.com Nextel tried to claim, among other things, that Cingular was not in compliance in Maryland over the Public Safety issues. I thought GSM and iDEM were two different balls of wax. So what is the real story of spectrum?
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Chris Russell

Nov 8, 2003, 12:13 PM
Nextel acts like the grade school kid tattling to the principal.

Chris
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Rich Brome

Nov 11, 2003, 12:12 AM
I'm not familiar with what's going on with Nextel and Cingular in Maryland, but here are the basics on how the spectrum is divided:

There are two main "bands" in the U.S. - cellular and PCS. Cellular is also known as 800 or 850. Its frequencies are near 850 MHz. PCS is near 1900 MHz.

Cellular is divided into two parts, and for any given area there is one license for each part.

PCS is divided into six parts, although they are not equal parts - some are larger than others. But it's the same basic idea - for any given area there are six PCS licenses.

Nextel uses SMR spectrum, which is in the 800/900 MHz vicinity, but separate specific ranges from Cellular.
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bobolito

Nov 12, 2003, 12:40 PM
Nextel is in no position to start claiming about interference since they are the worst nightmare that ever happened to the public safety system. They were happy as long as other carriers didn't touch their PTT garbage and now all the sudden they want to become some kind of wireless industry police. They should leave that to the FCC and worry about their inevitable fall when everyone is on 3G and they get stuck with IDEN and no spectrum to upgrade.

The wireless licenses are divided into blocks and they have geographical boundaries. For each market in the US, there are six license blocks in the 1900Mhz (PCS) band and two blocks in the 800Mhz (Cellular) band.

The cellular band is at 824-849Mhz and 869-894Mhz. One frequency group is used ...
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