METHOD FOR TRANSMITTING CONTROL SIGNAL USING EFFICIENT MULTIPLEXING

• US 20110149901A1
• Filed: 01/26/2011
• Published: 06/23/2011
• Est. Priority Date: 10/02/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Hak Seong, Lee, Jung Hoon, Jeong, Seong Hoon, Kim, Ki Jun, Seo, Dong Youn, Kim, Bong Hoe, Yun, Young Woo, Ahn, Joon Kui, Yoon, Suk Hyon, Choi, Sung Duk
• Granted Patent: US 9,106,379 B2
• Time in Patent Office: Days
• US Class Current: 370/330
• 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

1-11. -11. (canceled)

12. A method for a base station to transmit ACK/NACK signals to a user equipment (UE) through downlink radio resources, the method comprising:

receiving uplink data from the UE through uplink radio resources; and

transmitting the ACK/NACK signals to the UE through the downlink radio resources, wherein the downlink radio resources are used for transmissions of both the ACK/NACK signals and downlink data, wherein the downlink radio resources used for the transmission of the ACK/NACK signals comprises a plurality of time-frequency domain units, wherein each of the plurality of time-frequency domain units comprises a plurality of subcarriers contiguously located in a frequency domain,

wherein the plurality of time-frequency domain units are distributed in the frequency domain within an available downlink frequency band, wherein multiple ACK/NACK signals are multiplexed within each of the plurality of time-frequency domain units, and

wherein the multiple ACK/NACK signals multiplexed within the same time-frequency domain units are distinguished from each other by different orthogonal codes multiplied to the multiple ACK/NACK signals.

13. The method of claim 12, wherein the plurality of time-frequency domain units are distributed such that each of the plurality of the time-frequency domain units is distanced as far as possible from each other in the frequency domain within the available downlink frequency band.

14. The method of claim 12, wherein the plurality of time-frequency domain units are used for transmission of the same ACK/NACK signals repeated through the plurality of time-frequency domain units.

15. The method of claim 12, wherein the downlink radio resources used for the transmission of the downlink data are not overlapped with the downlink radio resources used for the transmission of the ACK/NACK signals.

16. The method of claim 12, wherein the plurality of time-frequency domain units are located within a single OFDM symbol, and

wherein the plurality of time-frequency domain units are distributed in the frequency domain at the single OFDM symbol.

17. The method of claim 12, wherein the plurality of time-frequency domain units are located within multiple OFDM symbols, and

wherein the plurality of time-frequency domain units are distributed in the frequency domain over the multiple OFDM symbols.

18. The method of claim 12, wherein a number of the multiple ACK/NACK signals multiplexed within the same time-frequency domain units corresponds to a number of different orthogonal codes multiplied to the multiple ACK/NACK signals.

19. A method for a user equipment (UE) to receive ACK/NACK signals from a base station through downlink radio resources, the method comprising:

transmitting uplink data to the base station through uplink radio resources; and

receiving the ACK/NACK signals from the base station through the downlink radio resources, wherein the downlink radio resources are used for receptions of both the ACK/NACK signals and downlink data, wherein the downlink radio resources used for the reception of the ACK/NACK signals comprises a plurality of time-frequency domain units, wherein each of the plurality of time-frequency domain units comprises a plurality of subcarriers contiguously located in a frequency domain,

wherein the plurality of time-frequency domain units are distributed in the frequency domain within an available downlink frequency band, wherein multiple ACK/NACK signals are multiplexed within each of the plurality of time-frequency domain units, and

wherein the multiple ACK/NACK signals multiplexed within the same time-frequency domain units are distinguished from each other by different orthogonal codes multiplied to the multiple ACK/NACK signals.

20. The method of claim 19, wherein the plurality of time-frequency domain units are distributed such that each of the plurality of time-frequency domain units is distanced as far as possible from each other in the frequency domain within the available downlink frequency band.

21. The method of claim 19, wherein the plurality of time-frequency domain units are used for reception of the same ACK/NACK signals repeated through the plurality of time-frequency domain units.

22. The method of claim 19, wherein the downlink radio resources used for the reception of the downlink data are not overlapped with the downlink radio resources used for the reception of the ACK/NACK signals.

23. The method of claim 19, wherein the plurality of time-frequency domain units are located within a single OFDM symbol, and

wherein the plurality of time-frequency domain units are distributed in the frequency domain at the single OFDM symbol.

24. The method of claim 19, wherein the plurality of time-frequency domain units are located within multiple OFDM symbols, and

wherein the plurality of time-frequency domain units are distributed in the frequency domain over the multiple OFDM symbols.

25. The method of claim 19, wherein a number of the multiple ACK/NACK signals multiplexed within the same time-frequency domain units corresponds to a number of different orthogonal codes multiplied to the multiple ACK/NACK signals.