Method and apparatus for determining if a mobile station is present in an area
US6381457B1 · kind B1 · utility
98Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Apr 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and arrangement in a radio communication system for determining the presence of a mobile station in a determined area. A first radio channel is allocated for communication of control information and user data information between the mobile station and a first base station. The mobile station transmits identity information repeatedly on the first radio channel. A detecting unit receives at least one occurrence of the transmitted identity information. The mobile station is registered as present in the vicinity of the detecting unit upon receipt of said at least one occurrence of the identity information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.