Method enabling a mobile station of a cellular mobile radio system with more than one type of cell to determine the type of cell it is accessing, and mobile station and base transceiver station for implementing this method
US5535424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Sep 9, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a method of determining, in a cellular mobile radio system with more than one type of cell, which type of cell a mobile station is accessing, the management network of the system sends to the mobile station a signalling message (recognition message) in the form of a sinusoid whose frequency (recognition frequency) differs from a reference frequency known to or determinable by the mobile station. The difference, optionally a null difference, between the reference frequency and the recognition frequency is characteristic of the cell type. The mobile station determines the recognition frequency. The mobile station then determines the difference between the reference frequency and the recognition frequency. The mobile station then determines the cell type from this difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.