1. An integrated circuit to control a process, the process comprising:
transmitting, to a terminal, a first identity specific to a cell;
transmitting, to the terminal, a second identity, which is different from the first identity and which is set independently of the first identity; and
receiving a response signal, which is (i) first-spread using a first sequence defined by one of a plurality of cyclic shifts, said one of the plurality of cyclic shifts varying between symbols according to a cyclic shift hopping pattern set based on the second identity, and (ii) second-spread using one of a plurality of second sequences that are orthogonal to each other, and which is transmitted from the terminal.', 'transmitting, to a terminal, a first identity specific to a cell;', 'transmitting, to the terminal, a second identity, which is different from the first identity and which is set independently of the first identity; and', 'receiving a response signal, which is (i) first-spread using a first sequence defined by one of a plurality of cyclic shifts, said one of the plurality of cyclic shifts varying between symbols according to a cyclic shift hopping pattern set based on the second identity, and (ii) second-spread using one of a plurality of second sequences that are orthogonal to each other, and which is transmitted from the terminal.

2. The integrated circuit according to claim 1, comprising:
circuitry which, in operation, controls the process;
at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and
at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data.', 'circuitry which, in operation, controls the process;', 'at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and', 'at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data.

3. The integrated circuit according to claim 1, wherein the cyclic shift hopping pattern is common between a plurality of cells communicating with the terminal.

4. The integrated circuit according to claim 1, wherein, using a difference between slot numbers in a plurality of cells communicating with the terminal, the cyclic shift hopping pattern is adjusted.

5. The integrated circuit according to claim 1, wherein, the cyclic shift hopping pattern is adjusted using a difference between a slot number in a cell, to which the terminal belongs, and a slot number in a specific cell among a plurality of cells communicating with the terminal.

6. The integrated circuit according to claim 1, wherein the second identity is common between a plurality of cells communicating with the terminal.

7. The integrated circuit according to claim 1, wherein the cyclic shift hopping pattern is set based on one of the first identity and the second identity according to a signaling from a cell communicating with the terminal.

8. The integrated circuit according to claim 1, wherein a number of bits in the first identity is same as that in the second identity.

9. The integrated circuit according to claim 1, wherein the second identity is not related to a parameter of a downlink

10. The integrated circuit according to claim 1, wherein the second identity is related to a resource used for transmission of the response signal

11. An integrated circuit comprising:
circuitry, which, in operation:
controls transmission, to a terminal, of a first identity specific to a cell;
controls transmission, to the terminal, of a second identity, which is different from the first identity and which is set independently of the first identity; and
controls reception of a response signal, which is (i) first-spread using a first sequence defined by one of a plurality of cyclic shifts, said one of the plurality of cyclic shifts varying between symbols according to a cyclic shift hopping pattern set based on the second identity, and (ii) second-spread using one of a plurality of second sequences that are orthogonal to each other, and which is transmitted from the terminal.', 'circuitry, which, in operation:', 'controls transmission, to a terminal, of a first identity specific to a cell;', 'controls transmission, to the terminal, of a second identity, which is different from the first identity and which is set independently of the first identity; and', 'controls reception of a response signal, which is (i) first-spread using a first sequence defined by one of a plurality of cyclic shifts, said one of the plurality of cyclic shifts varying between symbols according to a cyclic shift hopping pattern set based on the second identity, and (ii) second-spread using one of a plurality of second sequences that are orthogonal to each other, and which is transmitted from the terminal

12. The integrated circuit according to claim 11, comprising:
at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and
at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data to be transmitted.', 'at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and', 'at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data to be transmitted

13. The integrated circuit according to claim 11, wherein the cyclic shift hopping pattern is common between a plurality of cells communicating with the terminal

14. The integrated circuit according to claim 11, wherein, using a difference between slot numbers in a plurality of cells communicating with the terminal, the cyclic shift hopping pattern is adjusted

15. The integrated circuit according to claim 11, wherein, the cyclic shift hopping pattern is adjusted using a difference between a slot number in a cell, to which the terminal belongs, and a slot number in a specific cell among a plurality of cells communicating with the terminal

16. The integrated circuit according to claim 11, wherein the second identity is common between a plurality of cells communicating with the terminal

17. The integrated circuit according to claim 11, wherein the cyclic shift hopping pattern is set based on one of the first identity and the second identity according to a signaling from a cell communicating with the terminal

18. The integrated circuit according to claim 11, wherein a number of bits in the first identity is same as that in the second identity

19. The integrated circuit according to claim 11, wherein the second identity is not related to a parameter of a downlink.

20. The integrated circuit according to claim 11, wherein the second identity is related to a resource used for transmission of the response signal.']