Generating correlation codes for location information
First Claim
1. A method of operating a location data system for a wireless communication system, the method comprising:
- generating and maintaining a first random number without transferring the first random number from the location data system;
monitoring a message flow to identify first location messages that include a device identifier and location information for a wireless communication device;
for each individual one of the first location messages, performing a mathematical transformation on the device identifier, wherein input into the mathematical transformation includes the first random number, to generate a first correlation code;
transferring first location records including the first correlation code and the location information but not the device identifier from the location data system, wherein individual ones of the location records are transferred in response to identifying individual ones of the first location messages;
deleting the device identifier from the location data system for time periods between identifying consecutive ones of the first location messages; and
deleting the first random number from the location data system.
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Accused Products
Abstract
A location data system in a wireless communication system generates and maintains a random number without transferring the random number from the location data system. The location data system monitors a message flow to identify location messages that include a wireless communication device identifier and location information for the wireless communication device. The location data system then processes the random number and the device identifier to generate a correlation code. The location data system transfers location records, including the correlation code and the location information but not the device identifier, from the location data system, wherein individual location records are transferred in response to identifying individual location messages. Finally, the random number is deleted from the location data system.
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Citations
16 Claims
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1. A method of operating a location data system for a wireless communication system, the method comprising:
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generating and maintaining a first random number without transferring the first random number from the location data system; monitoring a message flow to identify first location messages that include a device identifier and location information for a wireless communication device; for each individual one of the first location messages, performing a mathematical transformation on the device identifier, wherein input into the mathematical transformation includes the first random number, to generate a first correlation code; transferring first location records including the first correlation code and the location information but not the device identifier from the location data system, wherein individual ones of the location records are transferred in response to identifying individual ones of the first location messages; deleting the device identifier from the location data system for time periods between identifying consecutive ones of the first location messages; and deleting the first random number from the location data system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless communication system comprising:
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a random number generator configured to generate a first random number; and a location data system configured to; maintain the first random number without transferring the first random number from the location data system; monitor a message flow to identify first location messages that include a device identifier and location information for a wireless communication device; for each individual one of the first location messages, perform a mathematical transformation on the device identifier, wherein input into the mathematical transformation includes the first random number, to generate a first correlation code; transfer first location records including the first correlation code and the location information but not the device identifier from the location data system, wherein individual ones of the location records are transferred in response to identifying individual ones of the first location messages; delete the device identifier from the location data system for time periods between identifying consecutive ones of the first location messages; and delete the first random number from the location data system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification