User terminal and radio communication method

A terminal comprising:

• a processor that determines a cyclic shift based on a cyclic shift index associated with an orthogonal cover code index configured by a higher layer;
• and
• a transmitter that transmits:
• on an uplink control channel, uplink control information to which an orthogonal cover code associated with the orthogonal cover code index is applied;
• and
• within a resource block assigned for the uplink control channel, a demodulation reference signal using a reference signal sequence having the cyclic shift.

A radio control method for a terminal, the method comprising:

• determining a cyclic shift based on a cyclic shift index associated with an orthogonal cover code index configured by a higher layer;
• transmitting, on an uplink control channel, uplink control information to which an orthogonal cover code associated with the orthogonal cover code index is applied;
• and
• transmitting, within a resource block assigned for the uplink control channel, a demodulation reference signal using a reference signal sequence having the cyclic shift.

A base station comprising:

• a processor that configures an orthogonal cover code index associated with a cyclic shift index to a terminal;
• and
• a receiver that receives:
• on an uplink control channel, uplink control information to which an orthogonal cover code associated with an orthogonal cover code index configured by a higher layer is applied;
• and
• within a resource block assigned for the uplink control channel, a demodulation reference signal using a reference signal sequence having a cyclic shift based on the cyclic shift index.