Method for transmitting and receiving uplink signal in wireless communication system
First resource blocks of a radio resource each include a first number of subcarriers and a second number of subframes having the first size. In this case, second resource blocks are formed, each second resource block including fewer subcarriers than the first number and fewer subframes than the second number based on the first resource blocks. A signal is transmitted in the first resource block or second resource block, and particularly, signals of first and second channels are transmitted by sharing the first resource block.
1. A method for transmitting a signal through an uplink radio resource consisting of resource blocks each comprising a plurality of subcarriers, the method comprising: if a first data signal of a first channel is transmitted in a resource block, encoding a second data signal of a second channel by using a first sequence; additionally encoding the second data signal of the second channel encoded using the first sequence by using a second sequence; and transmitting the additionally encoded second data signal in the resource block, wherein a resource block of the radio resource comprises a first number of subcarriers and a second number of subframe having a first size, and the second channel, which is a narrowband transmission channel, is formed based on a resource block comprising fewer subcarriers than the first number and more subframes than the second number, wherein, if the first number is 12 and the second number is 1, the number of subcarriers of a resource block for the narrowband transmission channel is one of 2, 3, and 6, and the number of subframes of the resource block for the narrowband transmission channel is one of 6, 4, and 2 that correspond to the numbers of subcarriers 2, 3, and 6, respectively.
2. The method of claim 1 , wherein the first sequence is a phase-rotated sequence of a first length used for transmission of the first data signal, and the second sequence is an orthogonal sequence for transmission in the same resource block as the resource block used for the first channel.
3. The method of claim 1 , wherein the first sequence is an orthogonal sequence for transmission in the same resource block as the resource block used for the first channel, and the second sequence is a phase-rotated sequence of a first length used for transmission of the first data signal.
4. The method of claim 2 , wherein the first length of the phase-rotated sequence used for transmission of the first data signal corresponds to the number of subcarriers included in the resource block, and
the second data signal is encoded by multiplying the second data signal by a sequence corresponding to an index of a subcarrier used by the second channel, among phase-rotated sequences of the first length.
5. The method of claim 2 , wherein the orthogonal sequence is a Hadamard code or a discrete Fourier transform (DFT) sequence.
6. The method of claim 1 , wherein, if the second channel uses two subcarriers, 6 second channels are transmitted in the resource block corresponding to the first channel, if the second channel uses 3 subcarriers, 4 second channels are transmitted in the resource block corresponding to the first channel, if the second channel uses 4 subcarriers, 3 second channels are transmitted in the resource block corresponding to the first channel, and if the second channel uses 6 subcarriers, 2 second channels are transmitted in the resource block corresponding to the first channel.
7. A method for receiving a signal through an uplink radio resource consisting of resource blocks each comprising a plurality of subcarriers, the method comprising: if first resource blocks of the radio resource each comprise a first number of subcarriers and a second number of subframe having a first size, forming second resource blocks each comprising fewer subcarriers than the first number and more subframes than the second number based on the first resource blocks; and transmitting a signal in a first resource block or a second resource block, wherein, if the first number of the first resource block is 12 and the second number of the first resource block is 1, the number of subcarriers of the second resource block is one of 2, 3, and 6, and the number of subframes of the second resource block is one of 6, 4, and 2 that correspond to the numbers of subcarriers 2, 3, and 6, respectively.
8. The method of claim 7 , wherein a transmission frame comprises the first resource block and the second resource block.
9. The method of claim 7 , wherein
a signal of a first channel is transmitted in the first resource block, and
a signal of a second channel for narrowband transmission is transmitted in the second resource block.
10. The method of claim 7 , wherein a signal of a first channel and a signal of a second channel are transmitted in the first resource block.
11. The method of claim 10 , wherein,
if a first data signal of the first channel is transmitted through the first resource block, a second data signal of the second channel is encoded by using a first sequence;
the second data signal of the second channel encoded using the first sequence is additionally encoded by using a second sequence; and
the additionally encoded second data signal is transmitted in the first resource block.
12. The method of claim 11 , wherein the first sequence is a phase-rotated sequence of a first length used for transmission of the first data signal, and the second sequence is an orthogonal sequence for transmission in the first resource block.
13. The method of claim 11 , wherein the first sequence is an orthogonal sequence for transmission in the first resource block, and the second sequence is a phase-rotated sequence of a first length used for transmission of the first data signal.
14. The method of claim 12 , wherein
the first length of the phase-rotated sequence used for transmission of the first data signal corresponds to the number of subcarriers included in the resource block, and
the second data signal is encoded by multiplying the second data signal by a sequence corresponding to an index of a subcarrier used by the second channel, among phase-rotated sequences of the first length.
15. The method of claim 7 , wherein when transmitting a signal of a first channel and a signal of a second channel for narrowband transmission, if the second channel uses 2 subcarriers, 6 second channels are transmitted in the first resource block, if the second channel uses 3 subcarriers, 4 second channels are transmitted in the first resource block, if the second channel uses 4 subcarriers, 3 second channels are transmitted in the first resource block, and if the second channel uses 6 subcarriers, 2 second channels are transmitted in the first resource block.
16. A method for receiving a signal through an uplink radio resource consisting of resource blocks each comprising a plurality of subcarriers, the method comprising:
decoding a data signal received in a resource block by using a first sequence;
detecting a first channel from the signal encoded using the first sequence to acquire a first data signal;
decoding the signal decoded using the first sequence by using a second sequence; and
detecting a second channel from the signal decoded using the second sequence to acquire a second data signal.
17. The method of claim 16 , wherein the first sequence is a phase-rotated sequence of a first length used for transmission of the first data signal, and the second sequence is an orthogonal sequence for transmission of the second data signal in the resource block.