User terminal and radio communication method

A communication method for a terminal, comprising:

• determining an integer value of integer values, corresponding to an uplink control information value of uplink control information values, the integer values respectively corresponding to the uplink control information values including at least one of a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) and a Scheduling Request (SR), determining a cyclic shift based on the integer value, and generating a sequence based on the cyclic shift;
• and
• transmitting the sequence in an uplink control channel,
• wherein an interval between two cyclic shifts respectively based on two consecutive integer values is π/6,
• a first integer value of the integer values corresponds to a first uplink control information value which includes a 2-bit HARQ-ACK value 00 and a negative SR,
• a second integer value of the integer values corresponds to a second uplink control information value which includes a 2-bit HARQ-ACK value 01 and the negative SR,
• a third integer value of the integer values corresponds to a third uplink control information value which includes the 2-bit HARQ-ACK value 00 and a positive SR,
• a difference between the first integer value and the second integer value is 3, and
• a difference between the first integer value and the third integer value is 1.

A system comprising:

• a terminal that comprises:
• a processor that determines an integer value of integer values, corresponding to an uplink control information value of uplink control information values, the integer values respectively corresponding to the uplink control information values including at least one of a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) and a Scheduling Request (SR), determines a cyclic shift based on the integer value, and generates a sequence based on the cyclic shift;
• and
• a transmitter that transmits the sequence in an uplink control channel;
• and
• a base station that receives the sequence,
• wherein an interval between two cyclic shifts respectively based on two consecutive integer values is π/6,
• a first integer value of the integer values corresponds to a first uplink control information value which includes a 2-bit HARQ-ACK value 00 and a negative SR,
• a second integer value of the integer values corresponds to a second uplink control information value which includes a 2-bit HARQ-ACK value 01 and the negative SR,
• a third integer value of the integer values corresponds to a third uplink control information value which includes the 2-bit HARQ-ACK value 00 and a positive SR,
• a difference between the first integer value and the second integer value is 3, and
• a difference between the first integer value and the third integer value is 1.