A pretty densely distributed radio mesh with good (geographic routing) algorithms would tend to use the shortest path. Very small cells based on current WiFi or ultrawideband/digital pulse radio might have to route around obstacles (large high buildings, flow along the nodes with aerials dangling into the streets). MobileMesh doesn't seen to be the single solution, at least one contender exists. Both are being used in practice, alas not yet in your $100 garden-variety WiFi routers (these do bridging already,

Meshnets (everyone's a router) is cool, admittedly. But are you going to spend *your* battery life routing someone else's message? Fixed P2P energy costs are trivial. Not so for mobile P2P. And if your meshnodes are mains-powered, you have wires going there, so wireless is less useful. Solar nodes might be useful. At 03:19 PM 4/9/04 +0200, Eugen Leitl wrote: though).