Positioning systems and methods for determining the location of a mobile communication device
First Claim
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1. A method performed by a positioning system for determining the location of a mobile communication device (MCD), the method comprising:
- determining a cell in which the MCD is located, the determined cell being served by a serving base station connected to a set of radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the base station via a cable, and one of the radio heads included in the set is serving the MCD;
determining a cable length value representative of the length of the cable connecting the base station to the radio head serving the MCD; and
obtaining one or more measured radio property values;
forming a fingerprint using both the determined cable length value and the obtained measured radio property values; and
using the formed fingerprint to obtain location information for the MCD, wherein the obtained location information is associated with the formed fingerprint and comprises at least;
i) a set of polygon coordinate vectors or ii) a set of coordinates derived from the set of polygon coordinate vectors.
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Abstract
A localization approach based on cable length detection. In one aspect, a method performed by a positioning system for determining the location of a mobile communication device (MCD) is provided. In some embodiments, the method includes the positioning system determining a cable length value representative of the length of the cable connecting a base station to a radio head serving the MCD. The positioning system then determines a location of the MCD based on the determined cable length.
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Citations
21 Claims
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1. A method performed by a positioning system for determining the location of a mobile communication device (MCD), the method comprising:
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determining a cell in which the MCD is located, the determined cell being served by a serving base station connected to a set of radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the base station via a cable, and one of the radio heads included in the set is serving the MCD; determining a cable length value representative of the length of the cable connecting the base station to the radio head serving the MCD; and obtaining one or more measured radio property values; forming a fingerprint using both the determined cable length value and the obtained measured radio property values; and using the formed fingerprint to obtain location information for the MCD, wherein the obtained location information is associated with the formed fingerprint and comprises at least;
i) a set of polygon coordinate vectors or ii) a set of coordinates derived from the set of polygon coordinate vectors. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A positioning system for determining the location of a mobile communication device (MCD), the positioning system being adapted to:
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determine a cell in which the MCD is located, the determined cell being served by a serving base station connected to a set of radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the base station via a cable, and one of the radio heads included in the set is serving the MCD; determine a cable length value representative of the length of the cable connecting the base station to the radio head serving the MCD; obtain one or more measured radio property values; form a fingerprint using both the determined cable length value and the obtained measured radio property values; and use the formed fingerprint to obtain location information for the WCD, wherein the obtained location information is associated with the formed fingerprint and comprises at least;
i) a set of polygon coordinate vectors or ii) a set of coordinates derived from the set of polygon coordinate vectors. - View Dependent Claims (8, 9, 10, 11)
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12. A method for constructing a database for storing location information for use in determining the location of a user, the method comprising:
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determining the location of a mobile communication device (MCD), said location being defined by a set of two or more coordinates; generating a first fingerprint using a cable length value representing the length of a cable connecting a radio head to a base station, wherein at the time the location of the MCD was determined the radio head was serving the MCD; associating the first fingerprint with the determined location; determining a set of locations wherein each location in the set is associated with a fingerprint matching the first fingerprint; forming a polygon based on the determined set of locations, the polygon being defined by a set of three or more polygon coordinate vectors, each said polygon coordinate vector identifying a different vertex of the polygon; and associating the first fingerprint with at least the set of polygon coordinate vectors or a set of coordinates derived from the set of polygon coordinate vectors. - View Dependent Claims (13, 14, 15, 16)
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17. A positioning system for constructing a database for storing location information for use in determining the location of a user, the positioning system being adapted to:
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determine the location of a mobile communication device (MCD), said location being defined by a set of two or more coordinates; generate a first fingerprint using a cable length value representing the length of a cable connecting a radio head to a base station, wherein at the time the location of the MCD was determined the radio head was serving the MCD; associate the first fingerprint with the determined location; determine a set of locations wherein each location in the set is associated with a fingerprint matching the first fingerprint; form a polygon based on the determined set of locations, the polygon being defined by a set of three or more polygon coordinate vectors, each said polygon coordinate vector identifying a different vertex of the polygon; and associate the first fingerprint with at least the set of polygon coordinate vectors or a set of coordinates derived from the set of polygon coordinate vectors. - View Dependent Claims (18, 19, 20, 21)
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Specification