GSM, GPRS, EDGE Evolution

Hi,
I've to do, for my study, a research for the difference/evolution
between the three tecnology in the object.
I found that the only truth difference between Edge and gprs is the
modulation, is it right???
Do you know some document that explain this evolution and/or
difference... I tried to look in the standard... but they are so great
either in numeber than in difficult, that I'm afraid to waste time...
and I don't have so much time (1 or 2 weeks max...)
Thanks to all

By
N@poleone

napoleone1981@gmail.com wrote:

> Hi,
> I've to do, for my study, a research for the difference/evolution
> between the three tecnology in the object.
> I found that the only truth difference between Edge and gprs is the
> modulation, is it right???
> Do you know some document that explain this evolution and/or
> difference... I tried to look in the standard... but they are so great
> either in numeber than in difficult, that I'm afraid to waste time...
> and I don't have so much time (1 or 2 weeks max...)
> Thanks to all
>
> By
> N@poleone

GSM is voice only, EDGE is an enhanced GPRS and these two are for data
transfer. It is possible to have GSM available without GPRS/EDGE available
as I have seen happen here in Lacey, Wa with my Data only card since voice
is circuit switched. It would be possible to set up a circuit switched data
connection under such circumstances using a regular dialup isp but it is
horribly slow and will cost as voice minutes. GPRS is General Packet Radio
Service which is packetized data and of course as I said, EDGE is the
enhanced faster version. The parameters as far as commands are pretty much
the same for both, the hardware and the tower both have to be capable to
get the faster speeds of course. Unless the device itself and the software
are capable of discerning between plain GPRS and EDGE, you will only know
by the transfer speeds you see which are quite obvious.

Dave