Mobile telephone system for producing busyness information for s

Details Mobile telephone system for producing busyness information for s Mobile telephone system for producing busyness information for s

1990-04-27

1993-03-09

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

455 561, 455 581, 455 677, H04Q 700

Patent

active

051932091

ABSTRACT:
On-board equipment for a mobile telephone system has a function of reporting the degree of busyness of message channels available in a service area. While the equipment is in a stand-by condition with no communication being held thereon, the degree of busyness is determined on the basis of electric field levels of individual message channels or control information sent from a control station. When the electric field levels are used to determine the degree of busyness, the electric fields of a plurality of message channels assigned to the service area are detected. If any of the message channels has an electric field level higher than a predetermined level, that message channel is determined to be busy. The rate of use of the message channels is calculated by using the number of assigned message channels and the number of occupied message channels. The calculated rate of use is displayed as information which is indicative of the busyness of the message channels. When the busyness is determined on the basis of control information, a lockout signal sent from the control station and indicative of the fact that no idle message channels are available is detected. The number of lockout signals having appeared within a predetermined period of time is determined and displayed as busyness information.

REFERENCES:
patent: 4144412 (1979-03-01), Ito et al.
patent: 4376310 (1983-03-01), Stackhouse et al.
patent: 4658435 (1987-04-01), Childress et al.
patent: 4803679 (1989-02-01), Shimizu
patent: 4875231 (1989-10-01), Hara et al.

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