Patent ID: 9198140
Filing Date: 2015-11-24
Classification: H04B,H04W

Abstract:
1. A base band transmitter/receiver in a radio base station that transmits transmission data including a first power control command so that reception quality of signals from a mobile terminal is constant and adjusts transmission power on a basis of a second power control command in reception data from the mobile terminal, the radio base station configured for: measuring the quality of a reception signal; settling a state judged from a plurality of states corresponding to a plurality of first conditions which determines the first power control command to be inserted into transmission data, and for determining the first power control command on a basis of the measured quality of the reception signal and the state for settling; detecting and judging the second power control command from the reception data; settling a state judged from a plurality of states corresponding to a plurality of second conditions which determines the transmission power for a call, and for determining a transmission power value for the call concerned on a basis of the judged second power control command and the state for settling; primary modulating a frame generated by inserting a pilot symbol for synchronous detection and a dummy power control command into the transmission data for one slot period; subjecting the primary modulated frame to secondary modulation by using a code of each call for multiplexing; and inputting a timing information of the symbol where the dummy power control command is inserted to and the transmission data in the secondary modulated frame being modulated, for multiplying the transmission data by the determined transmission power value, for inverting the symbol on a basis of the determined first power control command at a timing of the dummy power control command indicated by the timing information, and for outputting the inverted symbol in real time.