Transmitter position integrity checking
First Claim
Patent Images
1. A server-based method of determining uncertainty, comprising:
- receiving a reported position associated with a wireless transmitter;
estimating, by the server, a position of a mobile station at a first point in time;
calculating a range between the reported position associated with the wireless transmitter and the estimated position of the mobile station;
determining, by the server, a position uncertainty value for the reported position associated with the wireless transmitter, the position uncertainty value representative of a level of correlation between one or more measurements, related to one or more signals transmitted from the wireless transmitter, and the calculated range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; and
sending said position uncertainty value to a base station almanac database server.
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Abstract
The subject matter disclosed herein relates to determining whether a reported position of a wireless transmitter is sufficiently accurate in accordance with an accuracy metric based at least in part on a calculated range between an estimated position of a mobile station and the reported position and also based at least in part on one or more measurements taken from one or more signals transmitted by the wireless transmitter.
52 Citations
27 Claims
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1. A server-based method of determining uncertainty, comprising:
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receiving a reported position associated with a wireless transmitter; estimating, by the server, a position of a mobile station at a first point in time; calculating a range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; determining, by the server, a position uncertainty value for the reported position associated with the wireless transmitter, the position uncertainty value representative of a level of correlation between one or more measurements, related to one or more signals transmitted from the wireless transmitter, and the calculated range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; and sending said position uncertainty value to a base station almanac database server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A server, comprising:
a receiver to; receive a reported position associated with a wireless transmitter; and
a processing unit to;estimate at least in part a position of a mobile station at the first point in time; calculate, at least in part, a range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; calculate a position uncertainty value for the reported position associated with the wireless transmitter, the position uncertainty value representative of a level of correlation between one or more measurements, related to one or more signals transmitted from the wireless transmitter, and the calculated range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; and send said position uncertainty value to a base station almanac database server. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A server, comprising:
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means for receiving a reported position associated with a wireless transmitter; means for estimating a position of a mobile station at the first point in time; means for calculating a range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; means for determining a position uncertainty value for the reported position associated with the wireless transmitter, the position uncertainty value representative of a level of correlation between one or more measurements, related to one or more signals transmitted from the wireless transmitter, and the calculated range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; and means for sending said position uncertainty value to a base station almanac database server. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A non-transitory article of manufacture, comprising:
- a storage medium having stored thereon instructions that, if executed by a processing unit of a server, enable the processing unit to;
receive a reported position associated with a wireless transmitter; estimate a position of a mobile station at a first point in time; calculate a range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; determine, by the server, a position uncertainty value for the reported position associated with the wireless transmitter, the position uncertainty value representative of a level of correlation between one or more measurements, related to one or more signals transmitted from the wireless transmitter, and the calculated range between the reported position associated with the wireless transmitter and the estimated position of the mobile station; and send said position uncertainty value to a base station almanac database server.
- a storage medium having stored thereon instructions that, if executed by a processing unit of a server, enable the processing unit to;
Specification