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 transmitting signals including ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals in a mobile communication system, the method comprising:
mapping reference signals on predetermined time domain units corresponding to first specific symbols of a two-dimensional resource region comprising a plurality of symbols, wherein the two-dimensional resource region comprises plural time domain units in a first dimension and plural frequency domain units in a second dimension;
serially multiplexing the control signals other than the ACK/NACK signals and the data signals;
mapping the serially multiplexed signals to the two-dimensional resource region;
mapping said ACK/NACK signals to second specific symbols adjacent to said first specific symbols by overwriting a part of said multiplexed signals mapped to the second specific symbols; and
transmitting the reference signals, ACK/NACK signals, control signals other than ACK/NACK signals, and data signals mapped to the resource region.
2. The method of claim 1 , wherein said multiplexing is performed such that said control signals other than the ACK/NACK signals are placed first in said multiplexed signal, then said data signals are placed following said control signals in said multiplexed signal.
3. The method of claim 1 , wherein said multiplexed signals are mapped to the resource region in a first direction in a frequency domain on each of the plurality of symbols, and wherein said ACK/NACK signals are mapped to said second specific symbols in a second direction in the frequency domain, the second direction is opposite to the first direction.
4. The method of claim 1 , wherein the part of said multiplexed signals overwritten by said ACK/NACK signals includes one or more of said control signals other than the ACK/NACK signals and said data signals.
5. The method of claim 1 , wherein said reference signals, the ACK/NACK signals, the control signals other than ACK/NACK signals, and the data signals are transmitted through a physical uplink sharing channel (PUSCH).
6. The method of claim 1 , wherein the multiplexed signals are mapped to a matrix and the ACK/NACK signals are mapped to the second specific symbols in specific columns of the matrix; and wherein control signals not including the ACK/NACK signals are mapped to extend along specific adjacent rows of the matrix which are arranged orthgonally to the specific columns.
7. The method of claim 1 , further comprising transmitting the reference signals, the ACK/NACK signals, the controls signals other than the ACK/NACK signals, and the data signals on an uplink channel from a UE to a base station.
8. The method of claim 7 , wherein the uplink channel is a Physical Uplink Shared Channel (PUSCH).
9. The method of claim 1 , wherein a time domain unit corresponds to SC-FDMA symbol and a frequency domain unit corresponds to a virtual subcarrier.
10. The method of claim 1 , wherein the control signals other than ACK/NACK signals comprise a channel quality indicator (CQI) and a precoding matrix index (PMI).
11. The method of claim 1 , further comprising mapping said ACK/NACK signals to the second specific symbols adjacent to said first specific symbols by overwriting a part of the data signals of said multiplexed signals mapped to the second specific symbols.
12. A communications apparatus which transmits signals including ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals in a mobile communication system, the apparatus comprising:
a multiplexer configured to serially multiplex the control signals other than the ACK/NACK signals and the data signals;
a mapper configured to:
map reference signals on predetermined time domain units corresponding to first specific symbols of a two-dimensional resource region comprising a plurality of symbols, wherein the two-dimensional resource region comprises plural time domain units in a first dimension and plural frequency domain units in a second dimension;
map the multiplexed signals to the resource region;
map the ACK/NACK signals to second specific symbols adjacent to the first specific symbols by overwriting a part of said multiplexed signals mapped to the second specific symbols;
a transmitter configured to transmit the reference signals, ACK/NACK signals, control signals other than ACK/NACK signals, and data signals mapped to the resource region to the receiver.
13. The apparatus of claim 12 , wherein the multiplexer is configured to place the control signals other than the ACK/NACK signals first in said multiplexed signal, then said data signals are placed following said control signals other than the ACK/NACK signals in the multiplexed signal.
14. The apparatus of claim 12 , wherein the mapper is configured to map the multiplexed signals to the resource region in a first direction in a frequency domain on each of the plurality of symbols, and to map the ACK/NACK signals to the second specific symbols in a second direction in the frequency domain, the second direction being opposite to the first direction.
15. The apparatus of claim 12 , wherein the part of said multiplexed signals overwritten by said ACK/NACK signals includes one or more of said control signals other than the ACK/NACK signals and said data signals.
16. The apparatus of claim 12 , wherein said reference signals, the ACK/NACK signals, the control signals other than ACK/NACK signals, and the data signals are transmitted through a physical uplink sharing channel (PUSCH).
17. The apparatus of claim 12 , wherein the mapper is configured to map the multiplexed signals to a matrix and to map the ACK/NACK signals to the second specific symbols in specific columns of the matrix; and to map the control signals not including the ACK/NACK signals to extend along specific adjacent rows of the matrix which are arranged orthgonally to the specific columns.
18. The apparatus of claim 12 , wherein the transmitter is configured to transmit the reference signals, the ACK/NACK signals, the controls signals other than the ACK/NACK signals, and the data signals on an uplink channel from a UE to a base station.
19. The apparatus of claim 18 , wherein the uplink channel is a Physical Uplink Shared Channel (PUSCH).
20. The apparatus of claim 12 , wherein a time domain unit corresponds to SC-FDMA symbol and a frequency domain unit corresponds to a virtual subcarrier.
21. The apparatus of claim 12 , wherein the control signals other than ACK/NACK signals comprise a channel quality indicator (CQI) and a precoding matrix index (PMI).
22. The apparatus of claim 12 , wherein the mapper is further configured to mapping said ACK/NACK signals to the second specific symbols adjacent to said first specific symbols by overwriting a part of the data signals of said multiplexed signals mapped to the second specific symbols.