Radio line allocation judging method in mobile communication...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Reexamination Certificate

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Details

C455S452200, C455S451000, C455S464000, C455S513000, C370S252000, C370S280000, C370S329000

Reexamination Certificate

active

06912394

ABSTRACT:
A radio channel assignment judgement method and a radio channel control device in a mobile communication system, capable of preventing a rapid tolerance degradation with respect to the identical frequency interference associated with a degradation of a receiving level of a communication channel that is caused, for example, by a moving of the mobile station, are disclosed. Upon receiving a communication request from a mobile station along with a measurement result of a receiving level of a level measurement channel, an unused assignment candidate frequency/radio channel is selected while a carrier-to-interference ratio (CIR) that is corresponding to this receiving level is determined from a table, a measurement result of an interference receiving level of the assignment candidate frequency/radio channel is acquired from the mobile station, whether this interference receiving level satisfies the carrier-to-interference ratio (CIR) selected from the table or not is judged, and a selected frequency/radio channel is assigned if it is satisfied.

REFERENCES:
patent: 5448761 (1995-09-01), Ushirokawa
patent: 5838671 (1998-11-01), Ishikawa et al.
patent: 5903843 (1999-05-01), Suzuki et al.
patent: 5953661 (1999-09-01), Schwinghammer et al.
patent: 6041238 (2000-03-01), Tanoue

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