punnamas vichitkulwongsa wrote:
> Currently, network operators know which cell you are in. Cell size varies
> depending on the network technology (PHS has much smaller cell size, average
> 50 meters radius, PDC and other cellular technologies usually have larger
> cell size), and the location of the cells (an indoor cell like Subway
> station can tell extremely accurate position info; out in the middle of
> nowhere, cell size could be up to 20-30 km wide).
Sorry, but this is outdated information...with actual
technology you can include some more information than only the
next cell which you are 'pinging' too. You can use run time lengths
of signals also and combine this to come close to 1 meter now.
J.
Received on Mon Aug 21 19:00:04 2000