GSM module + microcontroller, video through GPRS

Hello,

I'd like to build a system, which main purpose is transmitting video from
video camera to mobile phone/PDA in real time. I'm wondering if it is
possible to get satisfactory quality and frame rate (160x120 and 15-24 fps
would be enough) with GPRS technology? I have read manual of Telit GM826
GSM Module, but I don't exactly know how connection is made. There is
something called "Easy GPRS", which implements TCP/IP stack in module and
allows connecting and sending raw data to host in the Internet. But in
that case, connection would look like this:
video camera -> microcontroller -> GSM module -> GPRS/Internet cloud ->
Server -> Mobile/PDA
I'd prefer point-to-point connection between microcontroller and mobile,
but have no idea if it's possible at all. If the server is essential, what
about software? Do I have to write my own streaming software?

Thanks for any help!
Martin - al0nz0@wp.pl

 

On Nov 11, 3:32 pm, "Rakietka" <k...@hell.net.pl> wrote:

> possible to get satisfactory quality and frame rate (160x120 and 15-24 fps
> would be enough) with GPRS technology? I have read manual of Telit GM826

The short answer to this is: No. In ideal theoretical conditions, it
might work, but in practical terms nobody will ever be in those
conditions. Even EDGE won't support it in a realistic environment. You
can do still images, infrequently, and that's about it.

> video camera -> microcontroller -> GSM module -> GPRS/Internet cloud ->
> Server -> Mobile/PDA

You may need to work with the carrier on this. In many cases, at least
in North America, most TCP/IP ports are blocked and destination
addresses filtered because the carrier wants to force users to go
through their custom portals to all content. (E.g. you might be able
to get to eBay, which has an agreement with your carrier, but not
Craigslist, which doesn't).

>The short answer to this is: No. In ideal theoretical conditions, it
>might work, but in practical terms nobody will ever be in those
>conditions. Even EDGE won't support it in a realistic environment. You
>can do still images, infrequently, and that's about it.

Thanks for your reply. How about HSDPA? There is new module from Telit,
UC864. The maximum upload speed is about 370 kbps as far as I remember.

On Nov 11, 5:42 pm, "Rakietka" <k...@hell.net.pl> wrote:

> Thanks for your reply. How about HSDPA? There is new module from Telit,
> UC864. The maximum upload speed is about 370 kbps as far as I remember.

Definitely achievable over this network. Check coverage in your target
market though.