Method for transmitting uplink signals

• US 10,374,775 B2
• Filed: 02/25/2015
• Issued: 08/06/2019
• 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
• Primary Examiner(s): Yeung, Mang Hang
• Application Number:
  US14/631,315
• Publication Number:
  US 20150180638A1
• Time in Patent Office: 1,623 Days
• Field of Search: 370208, 370210, 370252, 370294, 370295, 370319, 370328-330, 370335, 370336, 370338, 370344, 455450, 455509
• 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 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.