Method enabling a mobile station of a cellular mobile radio syst

Details Method enabling a mobile station of a cellular mobile radio syst Method enabling a mobile station of a cellular mobile radio syst

1994-09-09

1996-07-09

Pham, Chi H.

Telecommunications

Transmitter and receiver at separate stations

455 541, 455 561, 379 59, H04B 726, H04Q 722

Patent

active

055354246

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.

REFERENCES:
patent: 5119397 (1992-06-01), Dahlin et al.
patent: 5230081 (1993-07-01), Yamada et al.
patent: 5235632 (1993-08-01), Raith
patent: 5410538 (1995-04-01), Roche et al.
patent: 5423063 (1995-06-01), Goldberg

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