Mode determination for mobile GPS terminals
First Claim
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1. 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;
a location aiding server; and
a communication system, 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.
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Abstract
The present invention discloses a system for determining the position of a GPS terminal. The system comprises a GPS terminal, a location aiding server, and a communications system. Messages are passed between the GPS terminal and the server, as well as within the GPS terminal, to determine the mode of operation of the GPS portion of the system. Decisions are made based on availability of aiding data and Quality of Service requirements.
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Citations
14 Claims
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1. A Global Positioning System (GPS)-based positioning system, comprising:
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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;
a location aiding server; and
a communication system, 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification