Transmitting spread signal in communication system

• US 8,369,378 B2
• Filed: 06/22/2011
• Issued: 02/05/2013
• Est. Priority Date: 06/13/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jung Hoon, Kim, Ki Jun, Roh, Dong Wook, Lee, Daewon, Ahn, Joon Kui
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US13/166,750
• Publication Number:
  US 20110249705A1
• Time in Patent Office: 594 Days
• Field of Search: 375/130, 375/140, 375/141, 375/144, 375/146, 375/147, 375/148, 375/267, 375/260, 375/295, 375/299, 375/316, 375/347, 370/310, 370/319, 370/320, 370/335, 370/431, 370/441, 370/445, 370/203, 370/208, 370/209, 370/210, 455/99, 455/101, 455/132, 714746-749
• US Class Current: 375/130
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 2201/709718 Determine interference
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0678 using different spreading codes between antennas code allocation H04J13/16
• CPC Class Codes: H04B 7/068 using space frequency diversity space-frequency coding H04L1/0606
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 13/16 Code allocation
• CPC Class Codes: H04L 1/0606 Space-frequency coding
• CPC Class Codes: H04L 1/0643 block codes
• CPC Class Codes: H04L 1/1621 Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 5/0021 in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0026 Division using four or more dimensions
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861

Abstract

A method for transmitting Acknowledgement/Negative acknowledgement (ACK/NACK) information in a communication system includes spreading first ACK/NACK information using an orthogonal sequence with a spreading factor of 2, spreading second ACK/NACK information using an orthogonal sequence with the spreading factor of 2, and coding the first and second spread ACK/NACK information on four available neighboring subcarriers of multiple antennas.

Claims

1. A method for transmitting Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the method comprising:

spreading first ACK/NACK information using an orthogonal sequence with a spreading factor of 2;

spreading second ACK/NACK information using an orthogonal sequence with the spreading factor of 2; and

coding the first and second spread ACK/NACK information on four available neighboring subcarriers of multiple antennas in a form as shown in Table 1 or 2;

2. The method of claim 1, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers exist on different Orthogonal Frequency-Division Multiplexing (OFDM) symbols.

3. The method of claim 1, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers are separated by a plurality of subcarriers in a frequency domain.

4. The method of claim 3, further comprising coding third and fourth spread ACK/NACK information on four available neighboring subcarriers of the multiple antennas,

wherein the first and second spread ACK/NACK information is coded on the first set of four available neighboring subcarriers in the form as shown in Table 1,

wherein the third and fourth spread ACK/NACK information is coded on the second set of four available neighboring subcarriers in the form as shown in Table 3,

wherein the first spread ACK/NACK information and the third spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the fourth spread ACK/NACK information have same ACK/NACK information:

5. The method of claim 4, further comprising coding fifth and sixth spread ACK/NACK information on four available neighboring subcarriers of the multiple antennas,

wherein the fifth and sixth spread ACK/NACK information is coded on a third set of four available neighboring subcarriers in a form as shown in Table 4,

wherein the first spread ACK/NACK information and the fifth spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the sixth spread ACK/NACK information have same ACK/NACK information:

6. The method of claim 1, wherein the antennas A and B are first two contiguously numbered antennas, and the antennas C and D are second two contiguously numbered antennas.

7. The method of claim 1, wherein the antennas A and B are odd-numbered antennas, and the antennas C and D are even-numbered antennas.

8. A method for receiving Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the method comprising:

receiving first and second spread ACK/NACK information on four available neighboring subcarriers, the first and second spread ACK/NACK information being transmitted from a transmitting end via multiple antennas,

wherein the first spread ACK/NACK information originates from spreading of first ACK/NACK information using an orthogonal sequence with a spreading factor of 2,

wherein the second spread ACK/NACK information originates from spreading of second ACK/NACK information using an orthogonal sequence with the spreading factor of 2, and

wherein the first and second spread ACK/NACK information is transmitted from the transmitting end in a state of being coded on the four available neighboring subcarriers of the multiple antennas in a form as shown in Table 1 or 2;

9. The method of claim 8, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers exist on different Orthogonal Frequency-Division Multiplexing (OFDM) symbols.

10. The method of claim 8, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers are separated by a plurality of subcarriers in a frequency domain.

11. The method of claim 10, further comprising receiving third and fourth spread ACK/NACK information on four available neighboring subcarriers, the third and fourth spread ACK/NACK information being transmitted from the transmitting antenna via the multiple antennas,

wherein the first and second spread ACK/NACK information is received on the first set of four available neighboring subcarriers in the form as shown in Table 1,

wherein the third and fourth spread ACK/NACK information is received on the second set of four available neighboring subcarriers in the form as shown in Table 3,

wherein the first spread ACK/NACK information and the third spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the fourth spread ACK/NACK information have same ACK/NACK information:

12. The method of claim 11, further comprising receiving fifth and sixth spread ACK/NACK information on four available neighboring subcarriers, the fifth and sixth spread ACK/NACK information being transmitted from the transmitting end via the multiple antennas,

wherein the fifth and sixth spread ACK/NACK information is received on a third set of four available neighboring subcarriers in a form as shown in Table 4,

wherein the first spread ACK/NACK information and the fifth spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the sixth spread ACK/NACK information have same ACK/NACK information:

13. The method of claim 8, wherein the antennas A and B are first two contiguously numbered antennas, and the antennas C and D are second two contiguously numbered antennas.

14. The method of claim 8, wherein the antennas A and B are odd-numbered antennas, and the antennas C and D are even-numbered antennas.

15. An apparatus configured to transmit Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the apparatus comprising:

a radio frequency unit; and

a processor,

wherein the processor is configured to spread first ACK/NACK information using an orthogonal sequence with a spreading factor of 2, to spread second ACK/NACK information using an orthogonal sequence with the spreading factor of 2 and to code first and second spread ACK/NACK information on four available neighboring subcarriers of multiple antennas in a form as shown in Table 1 or 2;

16. The apparatus of claim 15, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers exist on different Orthogonal Frequency-Division Multiplexing (OFDM) symbols.

17. The apparatus of claim 15, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers are separated by a plurality of subcarriers in a frequency domain.

18. The apparatus of claim 17, wherein the processor is further configured to code third and fourth spread ACK/NACK information on four available neighboring subcarriers of the multiple antennas,

wherein the first and second spread ACK/NACK information is transmitted on the first set of four available neighboring subcarriers in the form as shown in Table 1,

wherein the third and fourth spread ACK/NACK information is transmitted on the second set of four available neighboring subcarriers in the form as shown in Table 3,

wherein the first spread ACK/NACK information and the third spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the fourth spread ACK/NACK information have same ACK/NACK information:

19. The apparatus of claim 18, wherein the processor is further configured to code fifth and sixth spread ACK/NACK information on four available neighboring subcarriers of the multiple antennas,

wherein the fifth and sixth spread ACK/NACK information is transmitted on a third set of four available neighboring subcarriers in a form as shown in Table 4,

wherein the first spread ACK/NACK information and the fifth spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the sixth spread ACK/NACK information have same ACK/NACK information:

20. The apparatus of claim 15, wherein the antennas A and B are first two contiguously numbered antennas, and the antennas C and D are second two contiguously numbered antennas.

21. The apparatus of claim 15, wherein the antennas A and B are odd-numbered antennas, and the antennas C and D are even-numbered antennas.

22. An apparatus configured to receive Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the apparatus comprising:

a radio frequency unit; and

a processor,

wherein the processor is configured to receive first and second spread ACK/NACK information on four available neighboring subcarriers, the first and second spread ACK/NACK information being transmitted from a transmitting end via multiple antennas,

wherein the first spread ACK/NACK information originates from spreading of first ACK/NACK information using an orthogonal sequence with a spreading factor of 2,

wherein the second spread ACK/NACK information originates from spreading of second ACK/NACK information using an orthogonal sequence with the spreading factor of 2,

wherein the first and second spread ACK/NACK information is transmitted from the transmitting end in a state of being coded on the four available neighboring subcarriers of the multiple antennas in a form as shown in Table 1 or 2;

23. The apparatus of claim 22, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers exist on different Orthogonal Frequency-Division Multiplexing (OFDM) symbols.

24. The apparatus of claim 22, wherein the first set of four available neighboring subcarriers and the second set of four available neighboring subcarriers are separated by a plurality of subcarriers in a frequency domain.

25. The apparatus of claim 24, wherein the processor is further configured to receive third and fourth spread ACK/NACK information on four available neighboring subcarriers, the third and fourth spread ACK/NACK information being transmitted from the transmitting end via the multiple antennas,

wherein the first and second spread ACK/NACK information is received on the first set of four available neighboring subcarriers in the form as shown in Table 1,

wherein the third and fourth spread ACK/NACK information is received on the second set of four available neighboring subcarriers in the form as shown in Table 3,

wherein the first spread ACK/NACK information and the third spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the fourth spread ACK/NACK information have same ACK/NACK information:

26. The apparatus of claim 25, wherein the processor is further configured to receive fifth and sixth spread ACK/NACK information on four available neighboring subcarriers, the fifth and sixth spread ACK/NACK information being transmitted from the transmitting end via the multiple antennas,

wherein the fifth and sixth spread ACK/NACK information is received on a third set of four available neighboring subcarriers in a form as shown in Table 4,

wherein the first spread ACK/NACK information and the fifth spread ACK/NACK information have same ACK/NACK information, and

wherein the second spread ACK/NACK information and the sixth spread ACK/NACK information have same ACK/NACK information:

27. The apparatus of claim 22, wherein the antennas A and B are first two contiguously numbered antennas, and the antennas C and D are second two contiguously numbered antennas.

28. The apparatus of claim 22, wherein the antennas A and B are odd-numbered antennas, and the antennas C and D are even-numbered antennas.