Patent ID: 7304606

Claim:
A Global Positioning System (GPS)-based positioning system, comprising: a GPS terminal, including: a GPS section for receiving and processing a GPS signal; a call processing section, coupled to the GPS section via an interface, a first message being passed from the call processing section to the GPS section via the interface, and a second message is passed via the interface from the GPS section to the call processing section in response thereto, wherein the first message is a Quality of Service (QoS) message and the second message is a QoS response message; and a communication system capable of communication with a location aiding server, coupled to the GPS section and the call processing section, for selectively transmitting first data to the GPS terminal from the location aiding server and receiving data from the GPS terminal to be sent to the location aiding server, based on the first message and the second message if the QoS response message indicates that first data is required by the GPS section in order to provide a predetermined QoS, otherwise no location aiding data is employed.