System and method for preventing unauthorized use of a micro cel

Details System and method for preventing unauthorized use of a micro cel System and method for preventing unauthorized use of a micro cel

1995-12-21

1999-08-24

Bost, Dwayne

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

455 331, 455 561, 455 334, H04Q 722

Patent

active

059433965

ABSTRACT:
In a micro cellular system (MCS) which co-exists with a cellular system (CMTS) in a frequency band, fraudulent use of the MCS when it is moved from the CMTS to the location of another CMTS is prevented by providing a control unit 2 in the MCS which controls the overall operation of the MCS and a system ID receiving and judging unit which is capable of receiving all the downward control channels used in the CMTS. When the system ID receiving and judging unit receives a system ID transmitted from the CMTS which matches a system ID stored in the MTS, the control unit is allowed to start the operations of the MCS. Otherwise, the MCS is disabled. Therefore, if the MCS moves to another CMTS zone where the system ID is different, it is impossible to operate the MCS.

REFERENCES:
patent: 4748655 (1988-05-01), Thrower et al.
patent: 5142691 (1992-08-01), Freeburg et al.
patent: 5159625 (1992-10-01), Zicker
patent: 5239680 (1993-08-01), Grube et al.

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