SYSTEM AND METHOD FOR ESTIMATING THE LOCATION OF A MOBILE STATION IN COMMUNICATIONS NETWORKS
First Claim
1. A method for estimating the location of a mobile station that receives signals from a plurality of base stations, comprising:
- (a) determining an estimated location of a first mobile station;
(b) utilizing a first set of network measurements such as observed time difference (“
OTD”
) values at said first mobile station between a first signal received from a first base station and a second signal received from a second base station;
(c) determining a network timing value as a function of said estimated location and said OTD; and
(d) determining an estimated location of a second mobile station as a function of said network timing value.
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Accused Products
Abstract
A system and method for estimating the location of a mobile station that receives signals from a plurality of base stations. An estimated location of a mobile station may be determined through any number of or combination of location technologies. Network measurements such as observed time difference values and/or a round trip time values at the mobile station or base stations in the network may be utilized. Network timing relationships may be determined as a function of the estimated location and network measurements. An estimated location of a second mobile station may be determined as a function of the network timing relationships.
70 Citations
100 Claims
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1. A method for estimating the location of a mobile station that receives signals from a plurality of base stations, comprising:
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(a) determining an estimated location of a first mobile station; (b) utilizing a first set of network measurements such as observed time difference (“
OTD”
) values at said first mobile station between a first signal received from a first base station and a second signal received from a second base station;(c) determining a network timing value as a function of said estimated location and said OTD; and (d) determining an estimated location of a second mobile station as a function of said network timing value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for estimating the location of a mobile station that receives signals from a plurality of base stations, comprising:
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(a) determining an estimated location of a first mobile station; (b) utilizing a first set of network measurements such as observed time difference (“
OTD”
) values at said first mobile station between a first signal received from a first base station and a second signal received from a second base station;(c) utilizing a second set of network measurements such as round trip time (“
RTT”
) values at said first mobile station or base stations in the network;(d) determining a network timing value as a function of said estimated location and said first and second set of network measurements; and (e) determining an estimated location of a second mobile station as a function of said network timing value. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A system for estimating the location of a mobile station that receives signals from a plurality of base stations, comprising:
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(a) circuitry for determining an estimated location of a first mobile station; (b) circuitry for utilizing a first set of network measurements such as observed time difference (“
OTD”
) values at said first mobile station between a first signal received from a first base station and a second signal received from a second base station;(c) circuitry for determining a network timing value as a function of said estimated location and said OTD; and
(d) circuitry for determining an estimated location of a second mobile station as a function of said network timing value. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100)
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Specification