Selecting a Navigation Solution Used in Determining the Position of a Device in a Wireless Communication System
First Claim
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1. A method of determining a geographic position of a remote unit in a wireless communication system, comprising:
- determining a first position solution of the remote unit using a first set of position data;
determining a second position solution of the remote unit using a second set of position data;
selecting between the first position solution and the second position solution based on a predetermined selection criteria.
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Abstract
Different types of position solutions may be used to determine the position of a mobile station (104) in a wireless communication system (101). The position solutions include terrestrial, or network (102, 103), based techniques and non-network, such as satellite (160), based techniques. An apparatus and method whereby different position solutions are selected based on a figure of merit of the different solutions in determining a position of a mobile remote unit (104).
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Citations
101 Claims
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1. A method of determining a geographic position of a remote unit in a wireless communication system, comprising:
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determining a first position solution of the remote unit using a first set of position data;
determining a second position solution of the remote unit using a second set of position data;
selecting between the first position solution and the second position solution based on a predetermined selection criteria. - 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, 28)
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- 26. The method of 25 wherein comparing is biased in favor of one of the position solutions unless an error metric of the other position is less than a threshold value wherein the other position solution is selected.
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29. A method of determining a geographic position of a remote unit in a wireless communication system, comprising:
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determining a pre-fix position solution of the remote unit for each of at least two types of position measurement solutions;
selecting a desired one of the pre-fix position solutions based on figures of merit of the respective position solutions;
determining a final-fix position solution of the remote unit using at least one type of position measurement solution and the selected pre-fix position solution; and
selecting a desired final position solution as the geographic position of the remote unit based on respective figures of merit of the desired pre-fix position solution and the final-fix position solution. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A method of determining a geographic position of a remote unit in a wireless communication system, comprising:
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determining a first position solution based on mixed cell network measurements;
determining a second position solution based on pilot phase measurements;
selecting a pre-fix position solution from between the first position solution and the second position solution; and
generating acquisition assistance data based on the selected pre-fix position solution;
- View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 94)
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73. A position determination device in a wireless communication system, comprising:
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a position engine to receive data produced from network signals and non-network signals and to process the data to determine at least two position solutions; and
a controller to select a desired position solution based on respective figures of merit of the position solutions. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 95)
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96. A position determination device in a wireless communication system, comprising:
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a position engine to process data from a remote unit and to determine a pre-fix position solution and a final-fix position solution; and
a controller to select a desired final solution as the geographic position of the remote unit based on respective estimated errors of the position solutions. - View Dependent Claims (97, 98, 99)
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100. A remote unit for use in a wireless communication system, comprising:
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a controller to collect a first set of measurement data on signals receiver by the remote unit;
a position engine to accept the first set of data and to determine a first position solution of the remote unit, wherein using knowledge of the first position solution the controller collects a second set of measurement data on signals received by the remote unit and the position engine accepts the second set of data and determines a second position solution of the remote unit, and the controller selects between the first and second position solutions based on a predetermined selection criteria.
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101. A remote unit for use in a wireless communication system, comprising:
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a controller to collect a first set of measurement data on signals receiver by the remote unit;
a position engine to accept the first set of data and to determine a first position solution of the remote unit, wherein the controller collects a second set of measurement data on signals received by the remote unit and the position engine accepts the second set of data and determines a second position solution of the remote unit, and the controller selects between the first and second position solutions based on a predetermined selection criteria.
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Specification