Eugen Leitl wrote: > On Mon, 2 Dec 2002, Peter Fairbrother wrote: > >> What I don't understand is how a node knows the location of a person >> who moves about in the first place. > > The node spans a cell. Similiar to your cellular phone, you can link an ID > to a cell. Within the cell you can use relativistic ping and/or signal > strength (that's how mobile phone localization is done today). Since cells > overlap you've got a lot of constraints to get a position fix.
Sure, I understand that. Maybe I wasn't clear. What I want to know is how an end-user can know where another end-user, who moves from cell to cell, is? A cellphone network uses a constantly-updated central database. What is a cell here? Is it just the nodes that one node can reach directly, or a geographical area? I thought a mesh wasn't structured at that level. -- Peter Fairbrother
