Method for transmitting control signal using efficient multiplexing

• US 7,995,553 B2
• Filed: 10/29/2009
• Issued: 08/09/2011
• Est. Priority Date: 10/02/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jung Hoon, Jeong, Seong Hoon, Kim, Ki Jun, Seo, Dong Youn, Kim, Bong Hoe, Yun, Young Woo, Ahn, Joon Kui, Yoon, Suk Hyon, Kim, Hak Seong, Choi, Sung Duk
• Primary Examiner(s): Harper; Kevin C
• Application Number:
  US12/608,213
• Publication Number:
  US 20100111031A1
• Time in Patent Office: 649 Days
• Field of Search: None
• US Class Current: 370/342
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• 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 5/0026 Division using four or more dimensions
• 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: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method of transmitting a control signal using efficient multiplexing is disclosed. The present invention includes the steps of multiplexing a plurality of 1-bit control signals within a prescribed time-frequency domain by code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein a plurality of the 1-bit control signals include a plurality of the 1-bit control signals for a specific transmitting side. Accordingly, reliability on 1-bit control signal transmission can be enhanced.

Claims

1. A method of transmitting ACK/NACK signals, the method comprising:

repeating each of the ACK/NACK signals by N times, wherein N is a predetermined natural number greater than 1;

multiplexing i-th bits, each of the i-th bits being from the repeated ACK/NACK signals respectively, within an i-th time-frequency domain by a Code Division Multiple Access (CDMA) scheme, wherein i=1, 2, . . . , N, and the i-th time-frequency domains, each of which is for i=1, 2, . . . , N, respectively, are different from each other; and

transmitting the multiplexed ACK/NACK signals,

wherein the ACK/NACK signals are discriminated by orthogonal or pseudo-orthogonal codes used for multiplexing of each of the ACK/NACK signals.

2. The method of claim 1, wherein a number of the ACK/NACK signals corresponds to a number of the orthogonal or pseudo-orthogonal codes used for multiplexing of each of the ACK/NACK signals.

3. The method of claim 1, wherein the multiplexed ACK/NACK signals are mapped to different frequency regions within a single OFDM symbol zone, when a time zone used for transmitting the multiplexed ACK/NACK signals is the single OFDM symbol zone.

4. The method of claim 1, wherein the multiplexed ACK/NACK signals are mapped to different frequency regions within a plurality of OFDM symbol zones different from each of the plurality of OFDM symbol zones, when a time zone used for transmitting the multiplexed ACK/NACK signals is the plurality of OFDM symbol zones.

5. A method of transmitting signals, the method comprising:

generating N bit control signals by repeating each of ACK/NACK signals;

multiplexing i-th bits, each of the i-th bits being from the N bit control signals respectively, within an i-th time-frequency domain by a Code Division Multiple Access (CDMA) scheme, wherein i=1, 2, . . . , N, and the i-th time-frequency domains, each of which is for i=1, 2, . . . , N, respectively, are different from each other; and

transmitting the multiplexed N bit control signals,

wherein the ACK/NACK signals are discriminated by orthogonal or pseudo-orthogonal codes used for multiplexing each bits from the N bit control signals, and

wherein a number of ACK/NACK signals is twice as many as a size of the orthogonal or pseudo-orthogonal codes.