Digital radio mobile frequency supervision

Details Digital radio mobile frequency supervision Digital radio mobile frequency supervision

1991-05-20

1993-09-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, 455 542, 455 71, 455 331, H04J 316, H04B 100, H04B 700

Patent

active

052456102

ABSTRACT:
The frequency stability of the signals transmitted by a plurality of mobile stations to an associated base station within a radio network is supervised by first generating a reference signal at the base station. The signals received from the mobile stations are compared to the reference signal and a difference signal is generated. The difference signal is compared to first and second error values and if the difference exceeds the first error value, the mobile is summoned for a service adjustment. If the difference exceeds the second error value, the mobile is disabled from further transmissions.

REFERENCES:
patent: 4019138 (1977-04-01), Watanase et al.
patent: 4513415 (1985-04-01), Martinez
patent: 4901368 (1990-02-01), Arnold et al.
patent: 4955082 (1990-09-01), Hattori et al.
patent: 4972507 (1990-11-01), Lusignan
patent: 5103445 (1992-04-01), Ostbund
patent: 5119502 (1992-06-01), Kallin et al.

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