METHOD FOR TRANSMITTING UPLINK SIGNALS

• US 20150180638A1
• Filed: 02/25/2015
• Published: 06/25/2015
• Est. Priority Date: 09/13/2007
• Status: Active Grant

• Current Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Original Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Inventors: LEE, Dae Won, KIM, Bong Hoe, YUN, Young Woo, KIM, Ki Jun, ROH, Dong Wook, KIM, Hak Seong, PARK, Hyun Wook
• Granted Patent: US 10,374,775 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0081 Formats specially adapted to avoid errors in the feedback channel H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1664 the supervisory signal being transmitted together with payload signals; piggybacking
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI

Abstract

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.

Claims

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 from the UE;

mapping the multiplexed signals to a matrix, at least one column of the matrix comprising symbols which comprise a reference signal;

mapping second type control information to the matrix to overwrite some of the multiplexed signals mapped to a specific column of the which is adjacent to the at least one column which comprises the reference signal;

wherein, first control signals not including the second type information are mapped to extend along specific rows of the matrix whereby the first control signals are arranged orthogonally to the at least one column which comprises the reference signal; and

transmitting an output sequence of the matrix to the base station.

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 matrix to form bit sequences being arranged along with time-domain units and having a length equal to a number of columns of the matrix except for any columns which comprise one or more reference signals.

4. The method of claim 1, wherein the second type control information comprises ACK/NACK information.

5. The method of claim 1, wherein the matrix comprises SC-FDMA symbols, and wherein transmitting the output sequence comprises:

performing Discrete Fourier Transform (DFT) to the output sequence of the 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. The method of claim 1, further comprising transmitting the output sequence on a Physical Uplink Shared Channel (PUSCH).

7. The method of claim 1, wherein the first control signals not including the second type information are mapped to extend along specific adjacent rows of the matrix.

8. The method of claim 1, wherein the output sequence is a bit sequence read out column-by-column from the matrix.

9. The method of claim 1, wherein the first type control signal comprises a channel quality indicator (CQI) and a precoding matrix index (PMI).

10. The method of claim 1, wherein the matrix comprises SC-FDMA symbols, and further comprising mapping the second type control information in a location corresponding to a third SC-FDMA symbol and a next subsequent non-reference signal symbol of a slot, the slot comprising seven SC-FDMA symbols and a reference signal.

11. The method of claim 10, wherein the second type control information comprises ACK/NACK information.

12. 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 to output multiplexed signals to be transmitted from the UE;

a mapper configured for

mapping the multiplexed signals to a matrix, at least one column of the matrix comprising symbols which comprise a reference signal, and

mapping second type control information to the matrix to overwrite some of the multiplexed signals mapped to a specific column of the matrix which is adjacent to the at least one column which comprises the reference signal;

mapping first control signals not including the second type information to extend along specific rows of the matrix whereby the first control signals are arranged orthogonally to the at least one column which comprises the reference signal; and

a transmitter configured for transmitting an output sequence of the matrix to the base station.

13. The UE of claim 12, wherein the first control signals are sequentially mapped to extend along the specific adjacent rows.

14. The UE of claim 12, wherein the multiplexed signals are mapped to the matrix to form bit sequences being arranged along with time-domain units and having a length equal to a number of columns of the matrix except for any columns which comprise one or more reference signals.

15. The UE of claim 12, wherein the second type control information comprises ACK/NACK information.

16. The UE of claim 12, wherein the matrix comprises SC-FDMA symbols, and wherein the transmitter comprises:

a Discrete Fourier Transform (DFT) module configured for performing DFT to the output sequence of the matrix; and

an Inverse Fast Fourier Transform (IFFT) module configured for performing IFFT to the DFT-performed sequence.

17. The UE of claim 12, wherein the transmitter is configured to transmit the output sequence on a Physical Uplink Shared Channel (PUSCH).

18. The UE of claim 12, wherein the first control signals not including the second type information are mapped to extend along specific adjacent rows of the matrix.

19. The UE of claim 12, wherein the output sequence is a bit sequence read out column-by-column from the matrix.

20. The UE of claim 12, wherein the first type control signal comprises a channel quality indicator (CQI) and a precoding matrix index (PMI).

21. The UE of claim 12, wherein the matrix comprises SC-FDMA symbols, and wherein the mapper is configured to map the second type control information in a location corresponding to a third SC-FDMA symbol and a next subsequent non-reference signal symbol of a slot, the slot comprising seven SC-FDMA symbols and a reference signal.

22. The UE of claim 21, wherein the second type control information comprises ACK/NACK information.