| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication device which can prevent interference between SRS and PUCCH when a PUCCH transmission bandwidth fluctuates, and suppress the deterioration of CQI estimation accuracy caused by a band in which no SRS is transmitted.SOLUTION: The radio communication device is configured to prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates, and suppress the deterioration of CQI estimation accuracy caused by the band in which no SRS is transmitted. In the device, an SRS code generation unit (201) generates an SRS (Sounding Reference Signal) for measuring the quality of an uplink line data channel. An SRS arrangement unit (202) frequency-multiplexes the SRS on an SR transmission band and arranges the frequency-multiplexed SRS. An SRS arrangement control unit (208) controls the frequency multiplex of the SRS so as to be uniform in terms of a frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of a reference signal transmission bandwidth based on SRS arrangement information transmitted from a base station, and furthermore, controls a transmission interval of the frequency-multiplexed SRS. |
