Control channel traffic design in a high-capacity land mobile telephone system

Control channel efficiency improvement techniques for an 800-MHz band high-capacity land mobile telephone system are described. Three interesting techniques, 1) the channel capacity increase technique under the random access mode from many mobiles, 2) a control channel division method which takes into account differences of control signal traffic behavior in land originated calls and mobile originated calls, and 3) a control channel frequency assignment method for efficient utilization of the radio frequency band, are studied by using computer simulations. The control channel frequency assignment method proposed decreases the required number of control channel frequencies by more than one half of the number in the existing assignment method.