SELECTING A POSITION FIX TO DETERMINE THE LOCATION OF A WIRELESS COMMUNICATION DEVICE
First Claim
Patent Images
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; and
selecting between the first position solution and the second position solution based on a predetermined selection criteria, wherein the first position solution and the second position solution are based upon separate measurements.
1 Assignment
0 Petitions
Accused Products
Abstract
Different types of position fixes may be used to determine the location of a mobile station in a wireless communication system. The position fixes include terrestrial, or network, based techniques, and non-network based techniques, such as satellite, based techniques. An apparatus and method are presented by which different position fixes may be selected, based on the performance of a particular position fix in a particular mobile remote unit.
-
Citations
51 Claims
-
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; and selecting between the first position solution and the second position solution based on a predetermined selection criteria, wherein the first position solution and the second position solution are based upon separate measurements. - 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)
-
- 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.
-
29. A position determination device in a wireless communication system, comprising:
-
a position engine configured to receive data produced from network signals and non-network signals and to process the data to determine at least two position solutions, wherein a first position solution and a second position solution are based upon separate measurements; and a controller configured to select a desired position solution based on respective figures of merit of the position solutions. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
-
-
43. A non-transitory machine readable medium embodying instructions for determining a geographic position of a remote unit in a wireless communication system, which when executed by a processor causes the processor to
determine a first position solution of the remote unit using a first set of position data; -
determine a second position solution of the remote unit using a second set of position data; and select between the first position solution and the second position solution based on a predetermined selection criteria, wherein the first position solution and the second position solution are based upon separate measurements. - View Dependent Claims (44, 45, 46)
-
-
47. A position determination device in a wireless communication system, comprising:
-
means for receiving data produced from network signals and non-network signals and to process the data to determine at least two position solutions, wherein a first position solution and a second position solution are based upon separate measurements; and means for selecting a desired position solution based on respective figures of merit of the position solutions. - View Dependent Claims (48, 49)
-
-
50. 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, wherein the first position solution and the second position solution are based upon separate measurements; determining a pre-fix position solution of the remote unit for each of the first set of position data and the second set of position data; 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 of the first set of position data and the second set of position data, and the selected pre-fix position solution; and selecting a desired final position solution as the position of the remote unit based on respective figures of merit of the desired pre-fix position solution and the final-fix position solution.
-
-
51. An apparatus for determining a geographic position of a remote unit in a wireless communication system, comprising:
-
means for determining a first position solution of the remote unit using a first set of position data; means for determining a second position solution of the remote unit using a second set of position data, wherein the first position solution and the second position solution are based upon separate measurements; means for determining a pre-fix position solution of the remote unit for each of the first set of position data and the second set of position data; means for selecting a desired one of the pre-fix position solutions based on figures of merit of the respective position solutions; means for determining a final-fix position solution of the remote unit using at least one of the first set of position data and the second set of position data, and the selected pre-fix position solution; and means for selecting a desired final position solution as the position of the remote unit based on respective figures of merit of the desired pre-fix position solution and the final-fix position solution.
-
Specification