US 2010/0167660 A1 · WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD

Abstract

A reception unit measures a reception power level of a reference signal which is received from a base station apparatus BS. A reception signal processing unit acquires information indicative of a transmission power level of the reference signal. A control unit finds a path loss on the basis of the reception power level and this information. The control unit determines, on the basis of the path loss, a transmission power level of that one of two transmission frequency bands, which is closer to a frequency band with respect to which the pass loss has been measured. The control unit determines a transmission power level of the other transmission frequency band, which is farther from the frequency band with respect to which the pass loss has been measured, by correcting the transmission power level on the basis of a correction value based on a difference in frequency.

Claims14

Dependent claims

A wireless communication apparatus which transmits a radio signal of a first frequency and a radio signal of a second frequency, comprising:

information reception unit which receives information indicative of a transmission power of a counterpart apparatus;
measuring unit which measures a reception level of a reception signal which is closer to the first frequency than to the second frequency;
path loss detection unit which finds a path loss on the basis of the information that is received by the information reception unit and the reception level that is measured by the measuring unit;
first determination unit which determines a transmission power of a radio signal of the first frequency on the basis of the path loss that is found by the path loss detection unit;
correction value detection unit which finds a difference between a path loss of the first frequency and a path loss of the second frequency;
second determination unit which determines a transmission power of a radio signal of the second frequency on the basis of the path loss that is found by the path loss detection unit and the difference in path loss which is found by the correction value detection unit;
first transmission unit which transmits the radio signal of the first frequency with the transmission power that is determined by the first determination unit;
and
second transmission unit which transmits the radio signal of the second frequency with the transmission power that is determined by the second determination unit.

6 more elements

A wireless communication apparatus which transmits a radio signal of a first frequency and a radio signal of a second frequency, comprising:

information reception unit which receives information indicative of a transmission power of a counterpart apparatus;
measuring unit which measures a reception level of a reception signal which is closer to the first frequency than to the second frequency;
path loss detection unit which finds a path loss on the basis of the information that is received by the information reception unit and the reception level that is measured by the measuring unit;
first information reception unit which receives, from the counterpart apparatus, first control information for controlling a transmission power of a radio signal of the first frequency;
second information reception unit which receives, from the counterpart apparatus, second control information for controlling a transmission power of a radio signal of the second frequency, a variable amount of the second control information being greater than a variable amount of the first control information;
first determination unit which determines the transmission power of the radio signal of the first frequency on the basis of the path loss that is found by the path loss detection unit and the first control information that is received by the first information reception unit;
second determination unit which determines the transmission power of the radio signal of the second frequency on the basis of the path loss that is found by the path loss detection unit and the second control information that is received by the second information reception unit;
first transmission unit which transmits the radio signal of the first frequency with the transmission power that is determined by the first determination unit;
and
second transmission unit which transmits the radio signal of the second frequency with the transmission power that is determined by the second determination unit.

7 more elements

A wireless communication method for transmitting a radio signal of a first frequency and a radio signal of a second frequency, comprising:

an information reception step of receiving information indicative of a transmission power of a counterpart apparatus;
a measuring step of measuring a reception level of a reception signal which is closer to the first frequency than to the second frequency;
a path loss detection step of finding a path loss on the basis of the information that is received in the information reception step and the reception level that is measured in the measuring step;
a first determination step of determining a transmission power of a radio signal of the first frequency on the basis of the path loss that is found in the path loss detection step;
a correction value detection step of finding a difference between a path loss of the first frequency and a path loss of the second frequency;
a second determination step of determining a transmission power of a radio signal of the second frequency on the basis of the path loss that is found in the path loss detection step and the difference in path loss which is found in the correction value detection step;
a first transmission step of transmitting the radio signal of the first frequency with the transmission power that is determined in the first determination step;
and
a second transmission step of transmitting the radio signal of the second frequency with the transmission power that is determined in the second determination step.