Apparatus and method for transmitting channel quality indicator and acknowledgement signals in SC-FDMA communication systems

• US 8,855,096 B2
• Filed: 02/06/2013
• Issued: 10/07/2014
• Est. Priority Date: 07/16/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Papasakellariou, Aris, Cho, Joon-Young
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Sharma, Gautam
• Application Number:
  US13/760,771
• Publication Number:
  US 20130208672A1
• Time in Patent Office: 608 Days
• Field of Search: None
• US Class Current: 370/344
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• 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
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A method and apparatus for transmitting information symbols in a communication system are provided. The method includes determining a Channel Quality Indicator (CQI) and acknowledgement information, in response to data reception; generating a first symbol based on the CQI and a second symbol based on the acknowledgement information; and transmitting the first symbol and the second symbol. A first code is applied to the second symbol, when the acknowledgement information is negative, a second code is applied to the second symbol, when the acknowledgement information is positive, and the first code is applied to the second symbol, when the acknowledgement information does not exist.

Claims

1. A method for transmitting information symbols in a single-carrier frequency division multiple access communication system, the method comprising:

determining a Channel Quality Indicator (CQI) and acknowledgement information, in response to data reception;

generating a first symbol based on the CQI and a second symbol based on the acknowledgement information; and

transmitting the first symbol and the second symbol,

wherein a first code is applied to the second symbol, when the acknowledgement information is negative, a second code is applied to the second symbol, when the acknowledgement information is positive, and the first code is applied to the second symbol, when the acknowledgement information does not exist.

2. The method of claim 1, wherein the first code is {1 }.

3. The method of claim 2, wherein the second code is {−

1}.

4. The method of claim 1, wherein the second symbol is based on the acknowledgement information and a reference signal.

5. An apparatus for transmitting information symbols in a single-carrier frequency division multiple access communication system, the apparatus comprising:

a controller that determines a Channel Quality Indicator (CQI) and acknowledgement information, in response to data reception, generates a first symbol based on the CQI, and generates a second symbol based on the acknowledgement information; and

a transmitter that transmits the first symbol and the second symbol,

wherein the controller applies a first code to the second symbol, when the acknowledgement information is negative, applies a second code to the second symbol, when the acknowledgement information is positive, and applies the first code to the second symbol, when the acknowledgement information does not exist.

6. The apparatus of claim 5, wherein the first code is {1}.

7. The apparatus of claim 6, wherein the second code is {−

1}.

8. The apparatus of claim 5, wherein the controller generates the second symbol based on the acknowledgement information and a reference signal.

9. A method for receiving information symbols in a single-carrier frequency division multiple access communication system, the method comprising:

receiving a first symbol and a second symbol;

identifying a Channel Quality Indicator (CQI) based on the first symbol; and

identifying acknowledgement information based on the second symbol,

wherein a first code is applied to the second symbol, when the acknowledgement information is negative, a second code is applied to the second symbol, when the acknowledgement information is positive, and the first code is applied to the second symbol, when the acknowledgement information does not exist.

10. The method of claim 9, wherein the first code is {1}.

11. The method of claim 10, wherein the second code is {−

1}.

12. The method of claim 9, further comprising identifying a reference signal from the second symbol.

13. An apparatus for receiving information symbols in a single-carrier frequency division multiple access communication system, the apparatus comprising:

a receiver that receives a first symbol and a second symbol; and

a controller that identifies a Channel Quality Indicator (CQI) based on the first symbol, and that identifies acknowledgement information based on the second symbol,

wherein a first code is applied to the second symbol, when the acknowledgement information is negative, a second code is applied to the second symbol, when the acknowledgement information is positive, and the first code is applied to the second symbol, when the acknowledgement information does not exist.

14. The apparatus of claim 13, wherein the first code is {1}.

15. The apparatus of claim 14, wherein the second code is {−

1}.

16. The apparatus of claim 13, wherein the controller identifies a reference signal from the second symbol.