Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1989-10-10
1990-12-11
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455 34, 455 54, 455 67, 34082504, H04Q 700, H04B 1700
Patent
active
049776126
ABSTRACT:
A method and apparatus are disclosed for improved channel selection in a multi-frequency radio data communications system whereby a minimum level of signal/service quality may be maintained at all times without unduly impacting channel loading considerations. Specialized idle messages are utilized in the outbound channel of the radio system which are required in any event but include added information for the monitoring remote terminals to determine channel quality and take appropriate action by selecting a new channel to operate on if channel quality falls below a preset threshold level.
REFERENCES:
patent: 4716407 (1987-12-01), Borras et al.
patent: 4759051 (1988-07-01), Han
patent: 4815073 (1989-03-01), Gravel et al.
patent: 4905301 (1990-02-01), Krolopp et al.
patent: 4921464 (1990-05-01), Ito et al.
Eisenzopf Reinhard J.
Kuntz Curtis
Motorola Inc.
Southard Donald B.
LandOfFree
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