RADIO PAGING SYSTEM AND RECEIVER THEREFOR

摘要

The receiver of the radio paging system comprises means for receiving a first carrier wave modulated with a first plurality of preamble codes and one of first address and control codes and a second carrier wave modulated with a second plurality of preamble codes, the first plurality of preamble codes and a second address code. The first plurality of preamble codes is shorter than the second plurality of preamble codes. After demodulation of the signals there are generated first and second control signals having first and second repetition periods, respectively. The first repetition period is shorter than the first plurality of preamble codes and shorter than the second repetition period, the second repetition period is shorter than the second plurality of preamble codes. These signals are used to control the power supply.
This radio paging system reduces the power consumption of the paging receiver and changes the repetition period of the battery saving pulses for paging receivers depending on the call traffic.