Position updating method for a mobile terminal equipped with a positioning receiver
First Claim
1. A method implemented by a mobile terminal for determining the current position of a mobile terminal, said method comprising:
- receiving a request for said current position of said mobile terminal;
determining a desired quality of service;
determining whether an estimate of said current position meeting said desired quality of service can be computed based on stored aiding data in said mobile terminal; and
if said desired quality of service cannot be met based on said stored aiding data, obtaining additional aiding data from a remote source.
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Accused Products
Abstract
A mobile terminal equipped with a GPS receiver uses a quality of service parameter to determine whether to request aiding data from a location server connected to the mobile communication network. When a request is received by the mobile terminal for its current position, the mobile terminal determines a desired quality of service. Based on the desired quality of service, the mobile terminal then determines whether aiding data currently stored in its memory is sufficient to meet the specified quality of service. If so, the mobile terminal computes its current location using aiding data currently stored in its memory. If not, the mobile terminal may request aiding data from the network or acquire current aiding data from a GPS satellite.
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Citations
20 Claims
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1. A method implemented by a mobile terminal for determining the current position of a mobile terminal, said method comprising:
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receiving a request for said current position of said mobile terminal;
determining a desired quality of service;
determining whether an estimate of said current position meeting said desired quality of service can be computed based on stored aiding data in said mobile terminal; and
if said desired quality of service cannot be met based on said stored aiding data, obtaining additional aiding data from a remote source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19)
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17. A mobile terminal comprising:
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a positioning receiver;
a processor for computing current position based on navigation signals received by said positioning receiver;
said processor programmed to;
determine a desired quality of service for the computation of current position;
determine whether an estimate of said current position meeting said desired quality of service can be computed based on stored aiding data in said mobile terminal; and
if said desired quality of service cannot be met, obtaining additional aiding data from a remote source external to the mobile terminal.
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20. A system comprising:
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a fixed network;
a location server connected to said fixed network to capture and store aiding data from a multiplicity of sources; and
a mobile terminal communicating with the fixed network, said mobile terminal comprising;
a positioning receiver a processor for computing current position based on signals received by said positioning receiver;
said processor programmed to;
determine a desired quality of service for the computation of said current position;
determine whether an estimate of said current position meeting said desired quality of service can be computed based on stored aiding data in said mobile terminal; and
if said desired quality of service cannot be met, obtaining aiding data from said fixed network.
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Specification