Terminal apparatus, base station and communication method

A communication method implemented by a base station, the method comprising:

• transmitting an offset value for a transmission power of a sounding reference signal (SRS) to a terminal apparatus, the terminal apparatus controlling the transmission power using the offset value;
• and
• receiving the SRS according to the controlled transmission power, wherein
• the offset value used to control the transmission power is set within one of a first offset setting range having a first lower limit value and a first upper limit value and a second offset setting range having a second lower limit value and a second upper limit value, wherein a difference between the first lower limit value and the second lower limit value is equal to a difference between the first upper limit value and the second upper limit value,
• a step width of the offset values within the first offset setting range equals a step width of the offset values within the second offset setting range, and
• the SRS is a periodic SRS (P-SRS) or an aperiodic SRS (A-SRS).

An integrated circuit that controls a process performed at a base station, the process comprising:

• transmitting an offset value for a transmission power of a sounding reference signal (SRS) to a terminal apparatus, the terminal apparatus controlling the transmission power using the offset value;
• and
• receiving the SRS according to the controlled transmission power, wherein
• the offset value used to control the transmission power is set within one of a first offset setting range having a first lower limit value and a first upper limit value and a second offset setting range having a second lower limit value and a second upper limit value, wherein a difference between the first lower limit value and the second lower limit value is equal to a difference between the first upper limit value and the second upper limit value,
• a step width of the offset values within the first offset setting range equals a step width of the offset values within the second offset setting range, and
• the SRS is a periodic SRS (P-SRS) or an aperiodic SRS (A-SRS).