"babu" <(E-Mail Removed)> hath wroth:
>We are developing a project under our university course. We are
>novice in communication engineering.We developed a web site & we want
>to deploy the updates of that websites
>to our client.
Dhaka, Bangladesh?
School projects are normally not appropriate questions for usenet
newsgroups. You are expected to do your own research, your own
project proposals, and do your own learning. If you're having
problems with some specific aspect of your project, of course we can
try to help. However, it appears that you're asking us to plan your
project topology, which is not appropriate.
> To deploy updates we provide hand held embedded device to
>clients. We assume that all our clients are within 1.5 km range.
Radio range is determined by the local topography. If there is a
mountain or building in the way, radio will not go through it. 1.5km
radius is a substantial amount of coverage area that cannot be easily
serviced by a single central radio.
>Currently we have an ebox2300.
That's a VESA mini PC.
>We think that we use this device to
>receive updates from website through GSM network (mobile phone
>network)&
Ok, that's easy enough. I assume you have a GSM data modem available.
>then updates will be deployed to hand held devices through
>WI-FI network.
What wi-fi network? A "network" implies more than one Wi-Fi device.
>That is, ebox 2300 is connected to GSM network & local
>WI-FI network . We want to know whether doing all these is possible
>using ebox and if not what changes need to be made to ebox?
An ebox2300 is just a computer. Without the associated programming
and protocols, it's just a dumb computer. Web updates are normally
done with HTTP or FTP protocols. These are transparent on an ethernet
network, which some GSM modems, all PC's, all Wi-Fi devices, and some
handhelds, support. In effect, if your handheld device can connect to
the web server through this system, then data can be moved from one
end to the other.
> Which IEEE standard for WI FI can we use to cover range of
>1.5km ?
None. You specified that the 1.5Km range is for the GSM network, not
the wi-fi network. That's no problem for GSM cellular, but well
beyond the approximately 100 meter range of conventional Wi-Fi. If
you plan to replace the GSM system with one of your own design, I
would look into WiMax (IEEE 802.16) as a suitable but expensive
alternative.
>Is it possible to use IEEE802.11 b for this?
No. It's too large an area and too far even with a highly directional
antenna on one end (assuming an omnidirectional antenna at the "web
server").
> What type of WI FI transceiver can be used for Hand Held
>end device here?
That depends on what you have for a hand held device. Many Palm and
Windoze Mobile devices (PDA's) include Wi-Fi options.
>Remember that cost is a great factor in this project.
>Please give necessary information & links.
No. You need to untangle the project definition and define the
limitations of the technologies. GSM cellular data is good for a wide
area coverage, but has a slow transfer rate. GSM is also VERY
expensive to move large amounts of data. Wi-Fi is very fast, but only
at very short ranges. How you connect these two is apparently your
project and your learning experience.
--
Jeff Liebermann
(E-Mail Removed)
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060
http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
Similar Threads
Linear Mode
