nasif4003@gmail.com wrote:
> Hi ,
>     We are developing a project under our university course. We
> developed a web site & we want to deploy the updates of that websites
> to our client.
>     To deploy updates we  provide hand held embedded device to
> clients. We assume that all our   clients are within 1.5 km range.
> Currently we have an ebox2300. We think that we use this  device to
> receive updates from website through GSM network (mobile phone
> network)& then updates will be deployed to hand held  devices through
> WI-FI network. 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?
>
>            Which IEEE standard for WI FI can we use to cover range of
> 1.5km ?Is it possible to use IEEE802.11 b for this?
>             What type of WI FI transceiver can be used for  Hand Held
> end device here?
> Remember that cost is a great factor in this project.

It is possible with standard WiFi equipment, as long as you are able
to use directional antennas and line-of sight links. This mechanism is
used in so-called outdoor routers.
If you need 360 degrees coverage, you could use 3 or 4 access points
or routers at the central station, each covering 1/3 or 1/4 of the
area. The clients should be using directional antennas.
Not really a hand-held solution, but if your clients are within a
certain area, you could have a WiFi repeater with the directional
antenna on one end and a normal antenna on the other end.

Regards,
    Johan

Hi ,
    We are developing a project under our university course. We
developed a web site & we want to deploy the updates of that websites
to our client.
    To deploy updates we  provide hand held embedded device to
clients. We assume that all our   clients are within 1.5 km range.
Currently we have an ebox2300. We think that we use this  device to
receive updates from website through GSM network (mobile phone
network)& then updates will be deployed to hand held  devices through
WI-FI network. 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?

           Which IEEE standard for WI FI can we use to cover range of
1.5km ?Is it possible to use IEEE802.11 b for this?
            What type of WI FI transceiver can be used for  Hand Held
end device here?
Remember that cost is a great factor in this project.
Please give necessary information & links.

Thanks in advance
Babu