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

• US 20120320951A1
• Filed: 02/24/2011
• Published: 12/20/2012
• Est. Priority Date: 03/03/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Seung Hee, Jang, Ji Woong, Chung, Jae Hoon, Cho, Han Gyu, Kwon, Yeong Hyeon, Kang, Seung Hyun
• Granted Patent: US 8,848,763 B2
• Time in Patent Office: Days
• US Class Current: 375/141
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04J 13/0048 Walsh
• CPC Class Codes: H04J 13/0074 Code shifting or hopping
• CPC Class Codes: H04J 2011/0006 with CDM/CDMA
• CPC Class Codes: H04J 2011/0016 with FDM/FDMA and TDM/TDMA
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0073 Special arrangements for feedback channel
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/26 Systems using multi-frequency codes H04L27/32 takes precedence
• 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 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.

Claims

1. A method of transmitting, by a user equipment (UE), uplink control information (UCI) on a physical uplink control channel (PUCCH) in a wireless communication system, the method comprising:

generating encoding information bits by performing channel coding on information bits of the UCI, a length of the information bits of the UCI being smaller than a reference value M, the encoding information bits being generated by circular repetition of a sequence which is based on the information bits of the UCI;

generating scrambled bits by scrambling the encoding information bits based on a UE-specific scrambling sequence;

generating complex modulation symbols by modulating the scrambled bits;

block-wise spreading the complex modulation symbols based on an orthogonal sequence; and

transmitting the spread complex modulation symbols to a base station.

2. The method of claim 1, wherein the information bits of the UCI are hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information bits.

3. The method of claim 1, wherein M=11.

4. The method of claim 1, wherein the encoding information bits are subject to rate matching.

6. The method of claim 4, wherein the rate matching is performed using a circular buffer.

7. The method of claim 4, wherein the rate matching is performed by sequentially reading the sequence.

8. The method of claim 1, wherein a length of the encoding information bits is 48.

9. The method of claim 1, wherein the complex modulation symbols are quadrature phase shift keying (QPSK) symbols generated by QPSK modulation.

10. The method of claim 1, wherein the complex modulation symbols are block-wise spread into a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols.

11. The method of claim 1, wherein the orthogonal sequence is a Walsh code.

12. The method of claim 1, wherein the orthogonal sequence is hopped in a slot level.

5. (canceled)

13. A user equipment in a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit configured to transmit or receive radio signals; and

a processor connected to the RF unit, and configured for;

generating encoding information bits by performing channel coding on information bits of the UCI, a length of the information bits of the UCI being smaller than a reference value M, the encoding information bits being generated by circular repetition of a sequence, which is based on the information bits of the UCI;

generating scrambled bits by scrambling the encoding information bits based on a UE-specific scrambling sequence;

generating complex modulation symbols by modulating the scrambled bits;

block-wise spreading the complex modulation symbols based on an orthogonal sequence; and

transmitting the spread complex modulation symbols to a base station.

14. The user equipment of claim 13, wherein the encoding information bits are subject to rate matching.

15. The user equipment of claim 13, wherein M=11.