Methods and apparatus for providing data for enabling location of a mobile communications device
First Claim
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1. A method of providing data for enabling location of a mobile communications device to be determined, by monitoring messages traversing a signalling link for co-ordinating operation of the device with a communications network, comprising the steps of:
- monitoring at least one signalling link carrying messages between two elements of the communications network;
selecting messages of a first type carrying reports of measurements relating to propagation of signals between the device and the network;
extracting reports of measurements from the messages of the first type, independently of operation of said two elements of the network;
selecting messages of a second type carrying data other than reports of such measurements;
extracting information from the messages of the second type; and
combining measurement reports extracted from the messages of the first type with the information extracted from the messages of the second type to provide data for enabling the location of the mobile communications device to be determined.
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Abstract
A system for determining location of a mobile communications device obtains data for that purpose by monitoring signalling links in a communications network supporting the device. Data from signalling messages concerning propagation of signals between the device and the network are enhanced by the addition of data from other kinds of messages to facilitate use of the propagation data in determining the device'"'"'s location.
250 Citations
9 Claims
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1. A method of providing data for enabling location of a mobile communications device to be determined, by monitoring messages traversing a signalling link for co-ordinating operation of the device with a communications network, comprising the steps of:
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monitoring at least one signalling link carrying messages between two elements of the communications network;
selecting messages of a first type carrying reports of measurements relating to propagation of signals between the device and the network;
extracting reports of measurements from the messages of the first type, independently of operation of said two elements of the network;
selecting messages of a second type carrying data other than reports of such measurements;
extracting information from the messages of the second type; and
combining measurement reports extracted from the messages of the first type with the information extracted from the messages of the second type to provide data for enabling the location of the mobile communications device to be determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for providing data for enabling location of a mobile communications device to be determined, by monitoring messages traversing a signalling link for co-ordinating operation of the device with a communications network, comprising:
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monitoring means for monitoring at least one signalling link carrying messages between two elements of the communications network;
first selection means for selecting messages of a first type carrying reports of measurements relating to propagation of signals between the device and the network;
first extraction means for extracting reports of measurements from the messages of the first type, independently of operation of said two elements of the network;
second selection means selecting messages of a second type carrying data other than reports of such measurements;
second extraction means extracting information from the messages of the second type; and
combining means for combining measurement reports extracted from the messages of the first type with the information extracted from the messages of the second type to provide data for enabling the location of the mobile communications device to be determined.
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Specification