| 摘要 |
The present invention discloses a GPS system (100) that can operate in different modes depending on the network facilities and bandwidth available, the GPS information (114) that can be acquired, or user or system requirements. The modes comprise standalone mode, where a mobile communications device (104) computes the position of the device, an autonomous mode, where the mobile communications device (104) transmits the computed position to a server (108), application (110), or PSAP (112) in a communications network, a network aided mode, where the network aides the mobile communications device (104) in determining the position of the device, a network based mode, and other modes.
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