Method for transmitting uplink signals
View Patent ↗A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.
1. A method for a user equipment (UE) to transmit signals to a base station, the method comprising:
multiplexing data and first type control information to output multiplexed signals to be transmitted via a Physical Uplink Shared Channel (PUSCH) when the UE is to transmit the data and the first type control information simultaneously;
mapping the multiplexed signals to a R×C matrix, wherein the ‘R’ is equal to the number of rows of the matrix, and the ‘C’ is equal to the number of columns of the matrix which is determined based on a number of SC-FDMA symbols within one subframe except for specific SC-FDMA symbols used for a reference signal, and wherein the multiplexed signals are row-by-row mapped to the R×C matrix;
mapping second type control information to the R×C matrix to overwrite some of the multiplexed signals mapped to specific columns of the R×C matrix corresponding to SC-FDMA symbols adjacent to the specific SC-FDMA symbols;
wherein, in accordance with the time-first mapping, first control signals not including the second type information are mapped to extend along specific adjacent rows of the matrix whereby the first control signals are arranged orthogonally to the specific columns; and
transmitting an output sequence of the R×C matrix to the base station, wherein the output sequence is a bit sequence read out column-by-column from the R×C matrix.
2. The method of claim 1 , wherein the first control signals are sequentially mapped to extend along the specific adjacent rows.
3. The method of claim 1 , wherein the multiplexed signals are mapped to the R×C matrix to form bit sequences being arranged along with time-domain units and having a length of ‘C’ bits.
4. The method of claim 1 , wherein the second type control information comprises ACK/NACK information.
5. The method of claim 1 , wherein transmitting the output sequence comprises:
performing Discrete Fourier Transform (DFT) to the output sequence of the R×C matrix;
performing Inverse Fast Fourier Transform (IFFT) to the DFT-performed sequence; and transmitting the IFFT performed sequence to the base station SC-FDMA symbol-by-SC-FDMA symbol.
6. A user equipment (UE) for transmitting signals to a base station, the UE comprising:
a multiplexer configured for multiplexing data and first type control information output multiplexed signals to be transmitted via a Physical Uplink Shared Channel (PUSCH) when the UE is to transmit the data and the first type control information simultaneously;
a mapping logic configured for
mapping the multiplexed signals to a R×C matrix, wherein the ‘R’ is equal to the number of rows of the matrix, and the ‘C’ is equal to the number of columns of the matrix which is determined based on a number of SC-FDMA symbols within one subframe except for specific SC-FDMA symbols used for a reference signal, and wherein the multiplexed signals are row-by-row mapped to the R×C matrix, and
mapping second type control information to the R×C matrix to overwrite some of the multiplexed signals mapped to specific columns of the R×C matrix corresponding to SC-FDMA symbols adjacent to the specific SC-FDMA symbols;
in accordance with the time-first mapping, first control signals not including the second type information are mapped to extend along specific adjacent rows of the matrix whereby the first control signals are arranged orthogonally to the specific columns; and
a transmitter configured for transmitting an output sequence of the R×C matrix to the base station,
wherein the output sequence is a bit sequence read out column-by-column from the R×C matrix.
7. The UE of claim 6 , wherein the first control signals are sequentially mapped to extend along the specific adjacent rows.
8. The UE of claim 6 , wherein the multiplexed signals are mapped to the R×C matrix to form bit sequences being arranged along with time-domain units and having a length ‘C’ bits.
9. The UE of claim 6 , wherein the second type control information comprises ACK/NACK information.
10. The UE of claim 6 , wherein the transmitter comprises:
a Discrete Fourier Transform (DFT) logic configured for performing DFT to the output sequence of the R×C matrix; and
an Inverse Fast Fourier Transform (IFFT) logic configured for performing IFFT to the DFT-performed sequence.