Patent ID: 8290530

Claim:
A radio communication method in reverse link by multicarrier using at least a first carrier and a second carrier adjacent to the first carrier with a predetermined frequency interval, the method comprising the steps of: generating power control information being an instruction to increase or decrease transmission power of the first carrier on the basis of reception quality of reverse link data using the first carrier, and transmitting the generated power control information to a radio communication terminal connected via the first carrier; generating power control information being an instruction to increase or decrease transmission power of the second carrier on the basis of reception quality of reverse link data using the second carrier, and transmitting the generated power control information to a radio communication terminal connected via the second carrier; acquiring a transmission power value of the first carrier from the radio communication terminal connected via the first carrier; acquiring a transmission power value of the second carrier from the radio communication terminal connected via the second carrier; calculating a transmission power difference between the first carrier and the second carrier on the basis of the transmission power value of the first carrier and the transmission power value of the second carrier; and determining whether or not the transmission power difference exceeds a threshold set up on the basis of a maximum transmission power difference allowable between the first carrier and the second carrier, wherein in the steps of transmitting the power control information, transmission of the power control information being an instruction to increase the transmission power of the carrier having higher transmission power out of the first carrier and the second carrier is stopped when the transmission power difference exceeds the threshold set up on the basis of the maximum transmission power difference.