Method and apparatus for transmitting control information in a wireless communication system

• US 9,948,442 B2
• Filed: 09/17/2014
• Issued: 04/17/2018
• Est. Priority Date: 01/17/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Seung Hee, Moon, Sung Ho, Chung, Jae Hoon, Lee, Moon Il, Kwon, Yeong Hyeon
• Primary Examiner(s): YAO, KWANG BIN
• Assistant Examiner(s): Duda, Adam
• Application Number:
  US14/489,123
• Publication Number:
  US 20150049718A1
• Time in Patent Office: 1,308 Days
• Field of Search: None
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 13/004 Orthogonal
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• 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 27/2697 in combination with other modulation techniques
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• 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: H04L 5/0057 Physical resource allocation for CQI

Abstract

A method for transmitting control information via a PUCCH in a wireless communication system and an apparatus for performing the method are provided, the method including joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH from the first modulated symbol sequence; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a Discrete Fourier Transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.

Claims

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

generating a first modulation symbol sequence including the control information;

circularly shifting elements of the first modulation symbol sequence to generate a second modulation symbol sequence;

performing a Discrete Fourier Transform (DFT) operation on the second modulation symbol sequence to generate a complex symbol sequence; and

transmitting the complex symbol sequence via one of a plurality of single carrier frequency division multiple access (SC-FDMA) symbols of the PUCCH,

wherein a circular shift value for the first modulation symbol sequence is determined based on a time unit index.

2. The method of claim 1, wherein the time unit index is an SC-FDMA symbol index corresponding to the first modulation symbol sequence.

3. The method of claim 1, wherein the time unit index is a slot index corresponding to the first modulation symbol sequence.

4. The method of claim 1, wherein the cyclic shift value is a cell-specific circular shift value.

5. The method of claim 4, wherein the cell-specific circular shift value is obtained using the equation:

6. The method of claim 1, wherein each of the plurality of SC-FDMA symbols transmits a corresponding complex symbol sequence including the control information and a corresponding element of an orthogonal code.

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

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

a processor configured to;

generate a first modulation symbol sequence including the control information;

circularly shift elements of the first modulation symbol sequence to generate a second modulation symbol sequence;

perform a Discrete Fourier Transform (DFT) operation on the second modulation symbol sequence to generate a complex symbol sequence; and

transmit the complex symbol sequence via one of a plurality of single carrier frequency division multiple access (SC-FDMA) symbols of the PUCCH,

wherein a circular shift value for the first modulation symbol sequence is determined based on a time unit index.

8. The UE of claim 7, wherein the time unit index is an SC-FDMA symbol index corresponding to the first modulation symbol sequence.

9. The UE of claim 7, wherein the time unit index is a slot index corresponding to the first modulation symbol sequence.

10. The UE of claim 7, wherein the cyclic shift value is a cell-specific circular shift value.

11. The UE of claim 10, wherein the cell-specific circular shift value is obtained using the equation:

12. The UE of claim 7, wherein each of the plurality of SC-FDMA symbols transmits a corresponding complex symbol sequence including the control information and a corresponding element of an orthogonal code.