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

• US 9,503,244 B2
• Filed: 09/24/2015
• Issued: 11/22/2016
• 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:
  US14/864,341
• Publication Number:
  US 20160013919A1
• Time in Patent Office: 425 Days
• Field of Search: None
• US Class Current: 1/1
• 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 and receiving information symbols in a communication system are provided. A method includes determining a channel quality indicator (CQI) and two acknowledgements; generating a first symbol based on the CQI; generating a second symbol based on the two acknowledgements, if both the CQI and the two acknowledgements are to be transmitted on a physical uplink control channel (PUCCH); and transmitting the first symbol and the second symbol on the PUCCH. 1 is applied for generating the second symbol if the two acknowledgements have a first value, −1 is applied for generating the second symbol if the two acknowledgements have a second value, j is applied for generating the second symbol if the two acknowledgements have a third value, and −j is applied for generating the second symbol if the two acknowledgements have a fourth value, wherein the j is an imaginary unit.

Claims

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

determining a channel quality indicator (CQI) and two acknowledgements;

generating a first symbol based on the CQI;

generating a second symbol based on the two acknowledgements, if both the CQI and the two acknowledgements are to be transmitted on a physical uplink control channel (PUCCH); and

transmitting the first symbol and the second symbol on the PUCCH,

wherein 1 is applied for generating the second symbol if the two acknowledgements have a first value, −

1 is applied for generating the second symbol if the two acknowledgements have a second value, j is applied for generating the second symbol if the two acknowledgements have a third value, and −

j is applied for generating the second symbol if the two acknowledgements have a fourth value, and

wherein the j is an imaginary unit.

2. The method of claim 1, wherein the second symbol is generated based on the two acknowledgements and a reference signal.

3. The method of claim 2, wherein the reference signal is determined based on a constant amplitude zero auto-correlation (CAZAC) sequence.

4. The method of claim 1, wherein the first symbol is generated based on a constant amplitude zero auto-correlation (CAZAC) sequence.

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

a controller to determine a channel quality indicator (CQI) and two acknowledgements, to generate a first symbol based on the CQI, and to generate a second symbol based on the two acknowledgements if both the CQI and the two acknowledgements are to be transmitted on a physical uplink control channel (PUCCH); and

a transmitter to transmit the first symbol and the second symbol on the PUCCH,

wherein 1 is applied for generating the second symbol if the two acknowledgements have a first value, −

1 is applied for generating the second symbol if the two acknowledgements have a second value, j is applied for generating the second symbol if the two acknowledgements have a third value, and −

j is applied for generating the second symbol if the two acknowledgements have a fourth value, and

wherein the j is an imaginary unit.

6. The apparatus of claim 5, wherein the controller generates the second symbol based on the two acknowledgements and a reference signal.

7. The method of claim 6, wherein the reference signal is determined based on a constant amplitude zero auto-correlation (CAZAC) sequence.

8. The method of claim 5, wherein the controller generates first symbol based on a constant amplitude zero auto-correlation (CAZAC) sequence.

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

receiving a first symbol and a second symbol on a physical uplink control channel (PUCCH); and

identifying a channel quality indicator (CQI) and two acknowledgements based on the first symbol and second symbol if both the CQI and two acknowledgements are received on the physical uplink control channel (PUCCH),

wherein the two acknowledgements are identified as a first value if 1 is applied to the second symbol, the two acknowledgements are identified as a second value if −

1 is applied to the second symbol, the two acknowledgements are identified as a third value if j is applied to the second symbol, and the two acknowledgements are identified as a fourth value if −

j is applied to the second symbol, and

wherein the j is an imaginary unit.

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

11. The method of claim 10, wherein the reference signal is identified based on a constant amplitude zero auto-correlation (CAZAC) sequence.

12. The method of claim 9, wherein the CQI is identified based on a constant amplitude zero auto-correlation (CAZAC) sequence.

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

a receiver to receive a first symbol and a second symbol on a physical uplink control channel (PUCCH); and

a controller to identify a channel quality indicator (CQI) and two acknowledgements based on the first symbol and second symbol if both the CQI and two acknowledgements are received on the physical uplink control channel (PUCCH),

wherein the two acknowledgements are identified as a first value if 1 is applied to the second symbol, the two acknowledgements are identified as a second value if −

1 is applied to the second symbol, the two acknowledgements are identified as a third value if j is applied to the second symbol, and the two acknowledgements are identified as a fourth value if −

j is applied to the second symbol, and

wherein the j is an imaginary unit.

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

15. The apparatus of claim 14, wherein the reference signal is identified based on a constant amplitude zero auto-correlation (CAZAC) sequence.

16. The apparatus of claim 13, wherein the controller identifies the CQI based on a constant amplitude zero auto-correlation (CAZAC) sequence.