Method of transmitting scheduling request signal

1. A method of transmitting a scheduling request signal, wherein the scheduling request signal is used to request a radio resource for uplink transmission in a wireless communication system, the method comprising:

configuring a physical uplink control channel (PUCCH) for transmission of a scheduling request signal in a subframe, the subframe comprising two consecutive slots, a slot comprising a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols, the scheduling request signal being carried by a presence or absence of transmission of the PUCCH, wherein at least one SC-FDMA symbol in the subframe is assigned for transmission of a sounding reference signal; and

transmitting the scheduling request signal and the sounding reference signal in the subframe,

wherein configuring the PUCCH comprises:

dividing the plurality of SC-FDMA symbols in the slot into a first set of SC-FDMA symbols and a second set of SC-FDMA symbols;

mapping each of first frequency domain sequences to each SC-FDMA symbol in the first set, the first frequency domain sequences being generated by cyclic shifts of a base sequence;

mapping each of second frequency domain sequences to each SC-FDMA symbol in the second set, the second frequency domain sequence being generated by cyclic shifts of the base sequence;

spreading the first frequency domain sequences in the first set with a first orthogonal covering sequence, the first orthogonal covering sequence having a length equal to the number of SC-FDMA symbols in the first set; and

spreading the second frequency domain sequences in the second set with a second orthogonal covering sequence, the second orthogonal covering sequence having a length equal to the number of SC-FDMA symbols in the second set.

2. The method of claim 1 , wherein the PUCCH uses at least one resource block in each of the two slots in the subframe.

3. The method of claim 2 , wherein one of the two slots for the scheduling request signal uses different resource blocks in frequency domain.

4. The method of claim 2 , wherein each of the two slots in the subframe is spread by orthogonal covering sequences with different lengths.

5. The method of claim 4 , wherein the length of the orthogonal covering sequence for one slot including the at least one SC-FDMA symbol is shorter than that of the orthogonal sequence for the other slot.

6. The method of claim 1 , wherein the at least one SC-FDMA symbol for the sounding reference signal is the last SC-FDMA symbol in the subframe.

7. The method of claim 1 , wherein the first orthogonal covering sequence and the second orthogonal covering sequence are time domain sequences whose elements correspond to SC-FDMA symbols.

8. The method of claim 1 , wherein the two consecutive slots in the subframe use different subcarriers in frequency domain.

9. The method of claim 1 , wherein the number of SC-FDMA symbols in the first set is the same as that of SC-FDMA symbols in the second set, when the sounding reference signal is in the slot.

10. The method of claim 1 , wherein the number of SC-FDMA symbols in the first set is larger than that of SC-FDMA symbols in the second set.

11. The method of claim 10 , wherein the first set is assigned for a reference signal corresponding to the scheduling reference signal.