Determining location of a mobile station in a cellular communication coverage zone using time sequence correlation
First Claim
1. A method of location of a mobile station within a radio coverage zone of a cell of a radio cellular network, the cell comprising a base station having a plurality of distributed remote antennas, each remote antenna defining a respective radio coverage zone within the cell, wherein the method comprises:
- building a first time sequence indicating during which time intervals the mobile station has been allocated uplink transmission resources to transmit through the cellular network,for each remote antenna, building a second time sequence indicating the total power strength of the uplink transmissions simultaneously received by said each remote antenna,correlating the first time sequence and the second time sequence of said each remote antenna, the first and second time sequences being synchronised in time, andobtaining a mobile station location from the result of the correlation.
3 Assignments
0 Petitions
Accused Products
Abstract
The method of location of a mobile station within a radio coverage zone of a cell of a radio cellular network, comprises: building (50) a first time sequence indicating during which time intervals the mobile station has been allocated uplink transmission resources, for each remote antenna, building (54) a second time sequence indicating the total power strength of the uplink transmissions simultaneously received by this remote antenna, and correlating the first time sequence and at least one of the second time sequences, the first and second time sequences being synchronized in time, locating (53) the mobile station from the result of the correlation.
5 Citations
12 Claims
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1. A method of location of a mobile station within a radio coverage zone of a cell of a radio cellular network, the cell comprising a base station having a plurality of distributed remote antennas, each remote antenna defining a respective radio coverage zone within the cell, wherein the method comprises:
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building a first time sequence indicating during which time intervals the mobile station has been allocated uplink transmission resources to transmit through the cellular network, for each remote antenna, building a second time sequence indicating the total power strength of the uplink transmissions simultaneously received by said each remote antenna, correlating the first time sequence and the second time sequence of said each remote antenna, the first and second time sequences being synchronised in time, and obtaining a mobile station location from the result of the correlation. - View Dependent Claims (2, 3, 4)
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5. A system for locating a mobile station within a radio coverage zone of a cell of a radio cellular network, the cell comprising a base station having a plurality of distributed remote antennas, each of the remote antenna defining a respective radio coverage zone within the cell, wherein the system comprises:
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a uplink allocation monitor configured to build a first time sequence indicating during which time intervals the mobile station has been allocated uplink transmission resources to transmit through the cellular network, for each remote antenna, an uplink power monitor configured to build a second time sequence indicating the total power strength of the uplink transmissions simultaneously received by said each remote antenna, and a location measurement unit agent configured to locate the mobile station from the result of a correlation between the first time sequence and the second time sequence of said each remote antenna, the first and second time sequences being synchronised in time. - View Dependent Claims (6, 7, 8)
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9. A radio cellular network comprising:
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a mobile station, a distributed antenna system having a plurality of distributed remote antennas, each remote antenna defining a radio coverage zone of a radio coverage cell, and a base station defining the radio coverage cell, the base station having at least one transceiver linked to the remote antennas through a local network, the transceiver being able to multicast or broadcast data received through the cellular network to the remote antennas, so that the very same data are transmitted over the air by the plurality of remote antennas, wherein; the radio cellular network comprises a uplink allocation monitor configured to build a first time sequence indicating during which time intervals the mobile station has been allocated uplink transmission resources to transmit through the cellular network, each remote antenna comprises an uplink power monitor configured to build a second time sequence indicating the total power strength of the uplink transmissions simultaneously received by said each antenna, and the network comprises a location measurement unit agent configured to locate the mobile station from the result of a correlation between the first time sequence and the second time sequence of said each remote antenna, the first and second time sequences being synchronised in time. - View Dependent Claims (10, 11, 12)
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Specification