Teil 4
4. Handset - Global Positioning System
Requires GPS receiver and GPS antenna to be imbedded into the mobile telephone
Requires TDMA traffic channel resources to transmit location data
Employs signal timing techniques from four or more satellites from a constellation of 24 to determine position
Can require a significant time to compute position.
5. Network-Assisted Global Positioning System
Requires GPS receiver and GPS antenna to be imbedded into the mobile telephone
Requires TDMA traffic channel resources to transmit assistance and location data
Requires special servers to be placed throughout the area of coverage to assist mobile receivers with acquiring GPS signals
Mobile GPS receivers communicate with stationary GPS servers to assist in position determination
Da das P800 E-OTD featured, kann man schon annehmen, daß ein GPS-Receiver eingebaut ist.