System and method for a high throughput GSM location solution
First Claim
1. A method for estimating a location of wireless devices transmitting signals on channels in a communications system having a plurality of nodes and a plurality of Location Measurement Units (“
- LMU”
) comprising the steps of;
(a) receiving a first plurality of signals from a first channel by one or more of the plural LMUs;
(b) receiving a second plurality of signals from a second channel by one or more of the plural LMUs;
(c) converting the received first and second plural signals into first and second digital signals;
(d) dividing the first and second digital signals into first and second sets of frequency bins, the first and second sets of bins corresponding to the respective channel;
(e) correlating each of the divided signals with one or more reference signals;
(f) storing correlated signals in a database for estimating a location of one or more wireless devices(g) receiving tipping information by one or more of the LMUs;
(h) retrieving stored correlated signals from the database matching data in the tipping information;
(i) non-coherently adding the retrieved signals;
(j) determining time of arrival (“
TOA”
) information as a function of peak or peak quality of the added signals; and
(k) estimating a location of a wireless device as a function of the determined TOA information.
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Accused Products
Abstract
A system and method for estimating a location of wireless devices transmitting signals on channels in a communications system having a plurality of nodes and a plurality of Location Measurement Units (“LMU”). A first plurality of signals from a first channel may be received by one or more of the plural LMUs and a second plurality of signals from a second channel may be received by one or more of the plural LMUs. The received first and second plural signals may be converted into first and second digital signals and then divided into first and second sets of frequency bins, the first and second sets of bins corresponding to the respective channel. Each of the divided signals may be correlated with one or more reference signals, and the correlated signals stored in a database for estimating a location of one or more wireless devices.
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Citations
13 Claims
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1. A method for estimating a location of wireless devices transmitting signals on channels in a communications system having a plurality of nodes and a plurality of Location Measurement Units (“
- LMU”
) comprising the steps of;(a) receiving a first plurality of signals from a first channel by one or more of the plural LMUs; (b) receiving a second plurality of signals from a second channel by one or more of the plural LMUs; (c) converting the received first and second plural signals into first and second digital signals; (d) dividing the first and second digital signals into first and second sets of frequency bins, the first and second sets of bins corresponding to the respective channel; (e) correlating each of the divided signals with one or more reference signals; (f) storing correlated signals in a database for estimating a location of one or more wireless devices (g) receiving tipping information by one or more of the LMUs; (h) retrieving stored correlated signals from the database matching data in the tipping information; (i) non-coherently adding the retrieved signals; (j) determining time of arrival (“
TOA”
) information as a function of peak or peak quality of the added signals; and(k) estimating a location of a wireless device as a function of the determined TOA information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- LMU”
Specification