METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

• US 20130107854A1
• Filed: 04/21/2011
• Published: 05/02/2013
• Est. Priority Date: 04/21/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Seung Hee, Ko, Hyun Soo, Chung, Jae Hoon, Lee, Moon II
• Granted Patent: US 9,025,560 B2
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04B 7/0669 using different channel coding between antennas space-time coding H04L1/0618
• CPC Class Codes: H04B 7/0671 using different delays between antennas
• CPC Class Codes: H04L 27/2633 using partial FFTs
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information through a PUCCH in a wireless system and to a device therefore, the method comprising the following steps: receiving a first modulation symbol and a second modulation symbol from the control information; diffusing in a frequency domain, the first modulation symbol to a plurality of subcarriers; diffusing in a time domain, the first modulation symbol diffused in the frequency domain to a plurality of contiguous first SC-FDMA symbols; diffusing in the frequency domain, the second modulation symbol to a plurality of subcarriers; diffusing in the time domain, the second modulation symbol diffused in the frequency domain to the plurality of contiguous first SC-FDMA symbols; and transmitting the diffused first modulation symbol and the second modulation symbol through the PUCCH.

Claims

1. A method for transmitting control information through a Physical Uplink Control Channel (PUCCH) by a user equipment (UE) in a wireless communication system, the method comprising:

obtaining a first modulation symbol and a second modulation symbol from the control information;

spreading the first modulation symbol to a plurality of subcarriers in a frequency domain;

spreading the first modulation symbol spread in the frequency domain to a plurality of first contiguous SC-FDMA symbols in a time domain;

spreading the second modulation symbol to a plurality of subcarriers in a frequency domain;

spreading the second modulation symbol spread in the frequency domain to the plurality of first contiguous SC-FDMA symbols in a time domain; and

transmitting the spread first modulation symbol and the spread second modulation symbol through the PUCCH.

2. The method according to claim 1, wherein a frequency spreading sequence, which is used to spread the first modulation symbol and the second modulation symbol in the frequency domain, is generated by a combination of a base sequence and a cyclic shift.

3. The method according to claim 2, wherein a first frequency spreading sequence for use in the first modulation symbol and a second frequency spreading sequence for use in the second modulation symbol have the same base sequence and different cyclic shift values.

4. The method according to claim 1, wherein:

a time spreading sequence, which is used to spread the first modulation symbol and the second modulation symbol in the time domain, includes an orthogonal code, and

the same orthogonal code is applied to the first modulation symbol and the second modulation symbol.

5. The method according to claim 1, further comprising transmitting the first modulation symbol and the second modulation symbol through multiple antennas, wherein precoding for use in a space-code domain is applied to the first modulation symbol and the second modulation symbol.

6. The method according to claim 1, further comprising:

obtaining a third modulation symbol and a fourth modulation symbol from the control information;

spreading the third modulation symbol to a plurality of subcarriers in the frequency domain;

spreading the third modulation symbol spread in the frequency domain to a plurality of second contiguous SC-FDMA symbols in the time domain;

spreading the fourth modulation symbol to a plurality of subcarriers in the frequency domain;

spreading the fourth modulation symbol spread in the frequency domain to the plurality of second contiguous SC-FDMA symbols in the time domain; and

transmitting the spread third modulation symbol and the spread fourth modulation symbol through the PUCCH,

wherein the plurality of first contiguous SC-FDMA symbol and the plurality of second contiguous SC-FDMA symbols are located in the same slot.

12. The user equipment (UE) according to claim 6, wherein the processor obtains a third modulation symbol and a fourth modulation symbol from the control information, spreads the third modulation symbol to a plurality of subcarriers in the frequency domain, spreads the third modulation symbol spread in the frequency domain to a plurality of second contiguous SC-PUMA symbols in the time domain, spreads the fourth modulation symbol to a plurality of subcarriers in the frequency domain, spreads the fourth modulation symbol spread in the frequency domain to the plurality of second contiguous SC-PUMA symbols in the time domain, and transmits the spread third modulation symbol and the spread fourth modulation symbol through the PUCCH,

wherein the plurality of first contiguous SC-PUMA symbol and the plurality of second contiguous SC-PUMA symbols are located in the same slot.

7. A user equipment (UE) configured to transmit control information through a physical uplink control channel (PUCCH) in a wireless communication system comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor obtains a first modulation symbol and a second modulation symbol from the control information, spreads the first modulation symbol to a plurality of subcarriers in a frequency domain, spreads the first modulation symbol spread in the frequency domain to a plurality of first contiguous SC-FDMA symbols in a time domain, spreads the second modulation symbol to a plurality of subcarriers in a frequency domain, spreads the second modulation symbol spread in the frequency domain to the plurality of first contiguous SC-FDMA symbols in a time domain, and transmits the spread first modulation symbol and the spread second modulation symbol through the PUCCH.

8. The user equipment (UE) according to claim 7, wherein a frequency spreading sequence, which is used to spread the first modulation symbol and the second modulation symbol in the frequency domain, is generated by a combination of a base sequence and a cyclic shift.

9. The user equipment (UE) according to claim 8, wherein a first frequency spreading sequence for use in the first modulation symbol and a second frequency spreading sequence for use in the second modulation symbol have the same base sequence and different cyclic shift values.

10. The user equipment (UE) according to claim 7, wherein:

a time spreading sequence, which is used to spread the first modulation symbol and the second modulation symbol in the time domain, includes an orthogonal code, and

the same orthogonal code is applied to the first modulation symbol and the second modulation symbol.

11. The user equipment (UE) according to claim 7, wherein the first modulation symbol and the second modulation symbol are transmitted through multiple antennas, and precoding for use in a space-code domain is applied to the first modulation symbol and the second modulation symbol.