Patent ID: 8417277
Filing Date: 2013-04-09
Classification: H04B,H04W

Abstract:
1. A radio base station that inserts a power control command into transmission data so that reception quality of signals from a mobile terminal is constant and adjusts transmission power on a basis of the power control command in reception data from the mobile terminal, comprising: a quality measuring part for measuring the quality of a reception signal; a power control command insertion status control part for controlling a condition for determining a power control command to be inserted into transmission data; a power control command determining part for determining the power control command to be inserted on a basis of the measured quality of the reception signal and the condition for determining the power control command; a detecting/judging part for synchronously detecting and judging the power control command from the reception data; a power setting status controller for controlling a condition for determining transmission power for a call; a power determining part for determining a transmission power value for the call concerned on a basis of the judged power control command and the condition for determining the transmission power; a frame generating part for inserting a pilot symbol for synchronous detection and a dummy power control command into encoded transmission data to generate a frame, and for outputting an insertion transmit power control command timing information to identify a dummy power control command inserted symbol; a modulating part for subjecting the frame-generated transmission data to primary modulation; a spreading part for performing spreading modulation by using a spreading code of each call; and a power setting part for inputting the insertion transmit power control command timing information from the frame generating part, for inverting a sign of the transmission power value determined in the power determining part on the basis of the power control command judgment result when a power control command insertion timing comes, and for multiplying the sign inverted transmission power value by a spread signal which is subjected to spreading modulation every call.