Transmitting spread signal in communication system

• US 8,582,626 B2
• Filed: 02/01/2013
• Issued: 11/12/2013
• 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:
  US13/757,700
• Publication Number:
  US 20130148698A1
• Time in Patent Office: 284 Days
• Field of Search: 375/130, 375/131, 375/140, 375/141, 375/144, 375/146, 375/147, 375/148, 375/267, 375/299, 375/260, 375/316, 375/347, 370/208, 370/210, 370/335, 370/320, 370/342, 370/441, 370/445, 455/99, 455/101, 455/132
• US Class Current: 375/148
• 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 receiving Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system includes receiving a first signal including first spread ACK/NACK information and second spread ACK/NACK information from a first antenna set of a transmitting end in an orthogonal frequency division multiplexing (OFDM) symbol; receiving a second signal including third spread ACK/NACK information and fourth spread ACK/NACK information from a second antenna set of the transmitting end in an OFDM symbol; and de-spreading at least the first and third spread ACK/NACK information or the second and fourth spread ACK/NACK information for identifying the ACK/NACK information.

Claims

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

receiving a first signal including first spread ACK/NACK information and second spread ACK/NACK information from a first antenna set of a transmitting end in an orthogonal frequency division multiplexing (OFDM) symbol;

receiving a second signal including third spread ACK/NACK information and fourth spread ACK/NACK information from a second antenna set of the transmitting end in an OFDM symbol; and

de-spreading at least the first and third spread ACK/NACK information or the second and fourth spread ACK/NACK information for identifying the ACK/NACK information,

wherein the first spread ACK/NACK information, the second spread ACK/NACK information, the third spread ACK/NACK information, and the fourth spread ACK/NACK information exist in a form as shown in Table 1;

2. The method of claim 1, wherein the four available neighboring subcarriers for the first and second spread ACK/NACK information and the four available neighboring subcarriers for the third and fourth spread ACK/NACK information exist on different OFDM symbols.

3. The method of claim 1, further comprising:

receiving a third signal including fifth spread ACK/NACK information and sixth spread ACK/NACK information from the first antenna set of the transmitting end in an OFDM symbol; and

de-spreading at least the fifth spread ACK/NACK information or the sixth spread ACK/NACK spread information for identifying the ACK/NACK information,

wherein the fifth and sixth spread ACK/NACK information exist in a form as shown in Table 1 in which a₁ to a₂ and b₁ to b₂ are replaced with e₁ to e₂ and f₁ to f₂, respectively,

wherein e₁ to e₂ are elements of the fifth spread ACK/NACK information,

wherein f₁ to f₂ are elements of the sixth spread ACK/NACK information, and

wherein the four available neighboring subcarriers for the first and second spread ACK/NACK information are not contiguous with the four available neighboring subcarriers for the fifth and sixth spread ACK/NACK information in a frequency domain.

4. 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.

5. 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.

6. A user equipment configured to receive Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the user equipment comprising:

a radio frequency unit; and

a processor,

wherein the processor is adapted to;

receive a first signal including first spread ACK/NACK information and second spread ACK/NACK information from a first antenna set of a transmitting end in an orthogonal frequency division multiplexing (OFDM) symbol;

receive a second signal including third spread ACK/NACK information and fourth spread ACK/NACK information from a second antenna set of the transmitting end in an OFDM symbol; and

de-spread at least the first and third spread ACK/NACK information or the second and fourth spread ACK/NACK information for identifying the ACK/NACK information,

wherein the first spread ACK/NACK information, the second spread ACK/NACK information, the third spread ACK/NACK information, and the fourth spread ACK/NACK information exist in a form as shown in Table 1;

7. The user equipment of claim 6, wherein the four available neighboring subcarriers for the first and second spread ACK/NACK information and the four available neighboring subcarriers for the third and fourth spread ACK/NACK information exist on different OFDM symbols.

8. The user equipment of claim 6, wherein the processor is further configured to:

receive a third signal including fifth spread ACK/NACK information and sixth spread ACK/NACK information from the first antenna set of the transmitting end in an OFDM symbol; and

de-spread at least the fifth spread ACK/NACK information or the sixth spread ACK/NACK spread information for identifying the ACK/NACK information,

wherein the fifth and sixth spread ACK/NACK information exist in a form as shown in Table 1 in which a₁ to a₂ and b₁ to b₂ are replaced with e₁ to e₂ and f₁ to f₂, respectively,

wherein e₁ to e₂ are elements of the fifth spread ACK/NACK information,

wherein f₁ to f₂ are elements of the sixth spread ACK/NACK information,

wherein the four available neighboring subcarriers for the first and second spread ACK/NACK information are not contiguous with the four available neighboring subcarriers for the fifth and sixth spread ACK/NACK information in a frequency domain.

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

10. The user equipment of claim 6, wherein the antennas A and B are odd-numbered antennas, and the antennas C and D are even-numbered antennas.