Method and apparatus for supporting positioning of roaming mobile stations
US8131290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2007 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Dec 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques to support positioning of roaming mobile stations are described. A roaming mobile station communicates with a visited network and has a data connection to a home network. The mobile station sends a request for positioning assistance to a home position determining entity (H-PDE) in the home network. The H-PDE determines that base station almanac (BSA) data applicable for the mobile station is not locally available and sends a request for location information for the mobile station to a designated network entity. This entity may be a BSA server storing BSA data for different networks or a visited PDE (V-PDE) in the visited network. The H-PDE receives location information (e.g., BSA data, assistance data, and/or a position estimate for the mobile station) from the designated network entity and provides positioning assistance to the mobile station based on the received location information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.