Generating correlation codes for location information
US8543688B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2010 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Dec 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.