Efficient CDMA earliest phase offset search for geo-location
First Claim
Patent Images
1. A method of tracking earliest pilot phase offsets for geo-location determination comprising:
- determining search window limitations for one or more sectors due to cell coverage area and due to mobile station dynamics; and
searching for earliest pilot phase offsets of the sectors using the determined search windows.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless communication system improves the speed at which geo-location searches can be done by strategically setting window sizes and offsets and by intelligently tracking earliest path timing.
17 Citations
51 Claims
-
1. A method of tracking earliest pilot phase offsets for geo-location determination comprising:
-
determining search window limitations for one or more sectors due to cell coverage area and due to mobile station dynamics; and
searching for earliest pilot phase offsets of the sectors using the determined search windows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
- 11. A mobile station for use in a wireless communication system comprising a processor which determines search window limitations for one or more sectors due to cell coverage area and due to the mobile station dynamics, wherein the mobile station searches for an earliest pilot phase offsets of the sectors using the determined search windows.
-
21. A wireless communication system which tracks earliest pilot phase offsets for geo-location determination comprising:
-
one or more base stations, each of the one or more base stations serving a cell divided into one or more sectors; and
a mobile station which determines search window limitations for the one or more sectors due to the cell coverage area and due to mobile station dynamics, wherein the mobile station searches for the earliest pilot phase offsets of the one or more sectors using the determined search windows. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 40)
-
-
31. A method of improving geo-location measurements in a wireless communication system comprising:
-
computing a set of parameters;
transmitting the set of parameters to a mobile station; and
modifying a geo-location search based on the set of parameters. - View Dependent Claims (32, 33, 34, 35, 36, 38, 39, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51)
-
-
37. A method for modifying geo-location searches in a wireless communication system comprising:
-
determining a set of parameters; and
modifying a search window size and offset based on the set of parameters.
-
-
45. A wireless communication system comprising:
-
a plurality of base stations which calculate a set of parameters for geo-location searches; and
a mobile station which performs geo-location searches with one or more of the plurality of base stations, wherein the mobile station receives the parameter set from the plurality of base stations and modifies the geo-location searches based on the parameter set.
-
Specification