You lost me there... actually if something is in range all you need is a broadcast and receive point. AKA a router and a card and the connection itself should be established..
why would you need to ping anything constantly?
I have a card in mine so whenever i approach the driveway it picks up the devices in the house and i can do updates right there. No need to take the pc out or wait for the sub 28.8 gprs to kick in...