FIELD: radio engineering, communication.
SUBSTANCE: invention relates to a mobile communication system and is intended to adequately report sounding reference signal (SRS) transmission time and SRS parameters to a mobile terminal when an aperiodic SRS is used and efficient utilisation of radio resources used when transmitting an SRS. A radio base station that reports SRS transmission control information to a mobile terminal and controls transmission of an SRS in the mobile terminal, includes an SRS setting unit that selects bit information to report to the mobile terminal apparatus, from a table having bit information indicating not to trigger SRS transmission and bit information indicating to trigger SRS transmission using a default SRS parameter, and a reporting unit that reports the bit information for the mobile terminal using a downlink control channel.
EFFECT: improved communication.
9 cl, 25 dwg
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