Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1980-01-30
1982-10-05
Hecker, Stuart N.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
179 2EC, 455 31, H04Q 700
Patent
active
043529550
ABSTRACT:
A control signal transmission system for mobile radio communications uses a plurality of control channels extending between a plurality of mobile units and at least one control center. The control center transmits system information signals and paging signals during individually associated time frames. The mobile units transmit response signals corresponding to the paging signals by transmitting to the control centers through the control channels. At least one frame of the system provides for a transmission of responsive information signals, following each frame including the paging signals. Each of these response signals includes an identification number of the replying mobile unit.
REFERENCES:
patent: 3836726 (1974-09-01), Wells et al.
patent: 4031330 (1977-06-01), van Leeuwen
patent: 4112257 (1978-09-01), Frost
patent: 4144409 (1979-03-01), Utano et al.
patent: 4145657 (1979-03-01), Hanni
"800 MHz Band Land Mobile Telephone Control System;" Yoshikawa et al., Review of the Electrical Comm. Laboratories, vol. 25, Nos. 11-12, Nov.-Dec. 1977--pp. 1172-1190.
Kai Tomokazu
Saito Akio
Hecker Stuart N.
Nippon Electric Co. Ltd.
LandOfFree
Control signal transmission system for use in a mobile radio com 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 signal transmission system for use in a mobile radio com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control signal transmission system for use in a mobile radio com will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-424129