Peter Stockdale wrote: > Just as the system knows which mast is connected to the mobile, does > not the mobile know which mast it is speaking via ?
There is no need for the mobile to know which mast it is talking to or where it is for the correct operation of the mobile network, so no mechanism for this was built in when the GSM system was designed. It knows the identification of the cell it is in and of the surrounding cells, but nothing more. You could (in theory) have a database built into the mobile with details of the location of every single mast, but the moment a mast is re-sited or a new mast is erected the database in the mobile becomes obsolete. Even without that problem, the reuse of cell identifiers would make using the database tricky. Terry Streeter NB Arun - Stockton
