Patent ID: 6018642
Filing Date: 2000-01-25
Classification: H04W,Y02D

Abstract:
A radio communication system comprising:an intermittent power-on type mobile station for shifting to a power-on state synchronously with a received timing of a beacon signal, with a fixed period of time after the beacon signal has been received defined as a data receive-ready period; anda base station for emanating successive beacon signals to said intermittent power-on type mobile station and transmitting data to said intermittent power-on type mobile station by radio while said intermittent power-on type mobile station is ready to receive data from said station as a result of control by the individual beacon signal from said base station;said base station being operable to transmit data to the intermittent power-on type mobile station in preference to a normal mobile station assuming a normally power-on state without any need to shorten an interval of occurrence of said beacon signal if data to be transmitted to said intermittent power-on type mobile station exists during said data receive-ready period of said intermittent power-on type mobile station.