METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL INFORMATION FOR CARRIER AGGREGATED SPECTRUMS

• US 20100271970A1
• Filed: 04/20/2010
• Published: 10/28/2010
• Est. Priority Date: 04/22/2009
• Status: Abandoned Application

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Pan, Kyle Jung-Lin, Pietraski, Philip J., Gauvreau, Jean-Louis
• Application Number:
  US12/763,770
• Publication Number:
  US 20100271970A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/0073 Special arrangements for feedback channel
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 25/03343 Arrangements at the transmitter end
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

Methods and apparatus for transmitting uplink control information (UCI) in carrier aggregated spectrums are disclosed. UCI may include, but is not limited to, Precoding Matrix Indicator (PMI), Rank Indication (RI), Channel Quality Indicator (CQI), Acknowledge/Not Acknowledge (ACK/NACK) and Scheduling Request (SR). For symmetric carrier aggregation, uplink (UL) and downlink (DL) component carriers may be paired and use physical uplink control channel (PUCCH) in each UL component carrier to send UCI for the corresponding DL component carrier. For asymmetric carrier aggregation, methods are provided for UCI transmission and resource allocation depending on component carrier configuration or assignment. Methods are provided for multiple and single component carrier configurations that may further provide backward compatibility.

Claims

1. A method for transmitting uplink control information (UCI) in carrier aggregated spectrums, comprising:

receiving configuration information regarding downlink component carriers and at least one uplink component carrier;

associating the downlink component carriers and the at least one uplink component carrier; and

combining UCI in accordance with the configuration information for transmission over the at least one uplink component carrier.

2. The method of claim 1, wherein the UCI includes at least one of precoding matrix index (PMI), channel quality indicator (CQI), rank indication (RI), and acknowledge/not acknowledge (ACK/NACK).

3. The method of claim 1, wherein the at least one uplink component carrier is an uplink primary component carrier.

4. The method of claim 3, wherein the uplink primary component carrier includes at least one of a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) and the downlink component carriers are associated with at least one of PUCCH and PUSCH.

5. The method of claim 1, wherein combining includes at least one of bundling, multiplexing, or joint coding multiple UCI into at least one UCI.

6. The method of claim 1, wherein combining includes multiplexing multiple UCI over one of multiple time slots or multiple subframes.

7. The method of claim 1, wherein combining includes multiplexing bundled UCI over one of multiple time slots or multiple subframes.

8. The method of claim 6, wherein the multiple subframes are offset.

9. The method of claim 4, wherein the PUSCH is at least one of a periodic PUSCH or an aperiodic PUSCH.

10. The method of claim 4, wherein multiple PUCCH and a PUSCH carry the UCI.

11. The method of claim 4, wherein multiple PUCCH carry the UCI.

12. The method of claim 1, wherein the downlink component carriers and uplink component carriers are in unequal numbers.

13. The method of claim 4, wherein the PUCCH carries UCIs associated with one of symmetrically configured component carriers or asymmetrically configured carriers and the PUSCH carries UCIs associated with another one of symmetrically configured component carriers or asymmetrically configured carriers.

14. The method of claim 1, wherein the configuration information includes feedback mode information.

15. The method of claim 1, wherein the at least one uplink component carrier is multiple uplink component carriers and further comprises associating the downlink component carriers with the uplink component carriers in accordance with the configuration information.

16. The method of claim 15, wherein the UCI is transmitted over multiple uplink component carriers.

17. The method of claim 1, wherein the UCI is transmitted via a periodic physical uplink control channel (PUCCH).

18. The method of claim 1, wherein the UCI is transmitted over physical uplink control channel (PUCCHs) in offset subframes, wherein each offset subframe carries the UCI for different downlink component carriers.

19. The method of claim 18, wherein one offset subframe carries the UCI for a downlink primary component carrier and another offset subframe carries the UCI for at least one downlink secondary component carrier.

20. The method of claim 1, wherein the UCI is transmitted over physical uplink control channel (PUCCHs) in offset subframes, wherein each offset subframe carries a different UCI.

21. The method of claim 1, wherein the UCI is transmitted using symbols in a physical uplink control channel (PUCCH) resource and a first symbol is mapped to a first timeslot and a second symbol is mapped to a second timeslot.

22. The method of claim 1, wherein the UCI is transmitted using symbols in a physical uplink control channel (PUCCH) resource and the symbols are mapped to a first timeslot and to a second timeslot in one subframe.

23. A wireless transmit/receive unit (WTRU) configured to transmit uplink control information (UCI) in carrier aggregated spectrums, comprising,

a receiver configured to receive configuration information regarding downlink component carriers and at least one uplink component carrier;

a processor configured to associate the downlink component carriers and at least one uplink component carrier; and

the processor further configured to combine UCI in accordance with the configuration information for transmission over the at least one uplink component carrier.

24. The WTRU of claim 23, wherein the UCI includes at least one of precoding matrix index (PMI), channel quality indicator (CQI), rank indication (RI), and acknowledge/not acknowledge (ACK/NACK).

25. The WTRU of claim 23, wherein the at least one uplink component carrier is an uplink primary component carrier.

26. The WTRU of claim 25, wherein the uplink primary component carrier includes at least one of a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) and the downlink component carriers are associated with at least one of PUCCH and PUSCH.

27. The WTRU of claim 23, wherein combining includes at least one of bundling, multiplexing, or joint coding multiple UCI into at least one UCI.

28. The WTRU of claim 23, wherein combining includes multiplexing multiple UCI over one of multiple time slots or multiple subframes.

29. The WTRU of claim 23, wherein combining includes multiplexing bundled UCI over one of multiple time slots or multiple subframes.

30. The WTRU of claim 28, wherein the multiple subframes are offset.

31. The WTRU of claim 26, wherein the PUSCH is at least one of a periodic PUSCH or an aperiodic PUSCH.

32. The WTRU of claim 26, wherein multiple PUCCH and a PUSCH carry the UCI.

33. The WTRU of claim 26, wherein multiple PUCCH carry the UCI.

34. The WTRU of claim 23, wherein the downlink component carriers and uplink component carriers are in unequal numbers.

35. The WTRU of claim 26, wherein the PUCCH carries UCIs associated with one of symmetrically configured component carriers or asymmetrically configured carriers and the PUSCH carries UCIs associated with another one of symmetrically configured component carriers or asymmetrically configured carriers.

36. The WTRU of claim 23, wherein the configuration information includes feedback mode information.

37. The WTRU of claim 23, wherein the at least one uplink component carrier is multiple uplink component carriers and further comprises associating the downlink component carriers with the uplink component carriers in accordance with the configuration information.

38. The WTRU of claim 31, wherein the UCI is transmitted over multiple uplink component carriers.