Telecommunications – Transmitter and receiver at separate stations
Patent
1993-02-24
1995-04-04
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
455 332, 455 342, 455 541, 455 62, 455 531, 379 60, 370 953, H04Q 900
Patent
active
054045738
ABSTRACT:
A control channel monitoring system is for a mobile communication system in which base stations independently control radio zones which are arranged in a cellular array. A mobile station accesses the base station using at least one control channel. Each of the base stations constantly transmits using the control channel in common according to a time division multiple access. A voice signal is transmitted between an arbitrary base station and the mobile station according to the time division multiple access via a speech channel. The control channel monitoring system includes a monitoring part for carrying out a monitoring operation in which a transmission quality of the radio zones is monitored by monitoring the control channel. A selection standard is obtained for the radio zone as the mobile station moves. A silence judging part determines whether the voice signal indicates a silent state based on a level of the voice signal. A monitor control part monitors the result of the silence judging part for the voice signal which is exchanged via the speech channel within a certain time which combines each time slot of the control channel corresponding to the adjacent radio zone and a time it takes for the frequency synthesizer to switch the speech and control channels before and after each time slot. The monitor control part switches the oscillation frequency of the frequency synthesizer to a specified frequency in the time slot based on the monitored result to start the monitor process of the monitoring part.
REFERENCES:
patent: 5117502 (1992-05-01), Onoda et al.
patent: 5157661 (1992-10-01), Ianai et al.
Ohmori Masaru
Yabe Toshihiro
Eisenzopf Reinhard J.
Fujitsu Limited
To Doris H.
LandOfFree
Control channel monitoring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control channel monitoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control channel monitoring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2386221