ENHANCING LOCATION ACCURACY USING MULTIPLE SATELLITE MEASUREMENTS BASED ON ENVIRONMENT
First Claim
1. A method for determining a location of a wireless device in a communications network, the method comprising the steps of:
- (a) receiving a request for satellite assistance data from a requesting entity;
(b) determining a reference location as a function of the request;
(c) identifying one or more characterizing attributes as a function of the reference location;
(d) determining a set of satellites as a function of the reference location;
(e) determining whether more than one set of signal measurements should be acquired from one or more satellites in the set of satellites as a function of the identified one or more characterizing attributes;
(f) acquiring the one or more sets of signal measurements; and
(g) determining a location of the wireless device from the acquired measurements.
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0 Petitions
Accused Products
Abstract
A system and method for determining a location of a wireless device in a communications network. A request for satellite assistance data may be received from a requesting entity, and a reference location determined as a function of the request. One or more characterizing attributes may be identified as a function of the reference location, and a set of satellites determined as a function of the reference location. It may also be determined whether more than one set of signal measurements should be acquired from one or more satellites in the set of satellites as a function of the identified one or more characterizing attributes. The one or more sets of signal measurements may be acquired, and a location of the wireless device determined from the acquired measurements.
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Citations
21 Claims
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1. A method for determining a location of a wireless device in a communications network, the method comprising the steps of:
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(a) receiving a request for satellite assistance data from a requesting entity; (b) determining a reference location as a function of the request; (c) identifying one or more characterizing attributes as a function of the reference location; (d) determining a set of satellites as a function of the reference location; (e) determining whether more than one set of signal measurements should be acquired from one or more satellites in the set of satellites as a function of the identified one or more characterizing attributes; (f) acquiring the one or more sets of signal measurements; and (g) determining a location of the wireless device from the acquired measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining a location of a wireless device in a communications network comprising the steps of:
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(a) receiving a request for satellite assistance data from a requesting entity; (b) determining a reference location as a function of the request; (c) predicting one or more characterizing attributes as a function of the reference location; (d) determining a set of satellites as a function of the reference location; (e) determining whether more than one set of signal measurements should be acquired from one or more satellites in the set of satellites as a function of the predicted attributes; (f) acquiring the one or more sets of signal measurements; and (g) determining a location of the wireless device from the acquired measurements. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for determining a location of a wireless device in a communications network having a plurality of nodes, the method comprising the steps of:
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(a) identifying one or more characterizing attributes for ones of the plural nodes; (b) determining a threshold number of signal measurements to be received from a set of satellites as a function of the identified characterizing attributes, the set of satellites being in view of the ones of the plural nodes; and (c) receiving a second number of signal measurements from the set of satellites; and (d) if the second number does not meet or exceed the threshold number, storing the received signal measurements in a database until the threshold number of signal measurements have been received. - View Dependent Claims (19, 20, 21)
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Specification