PHYSICAL UPLINK CONTROL CHANNEL RESOURCE ALLOCATION FOR MULTIPLE COMPONENT CARRIERS

• US 20120039275A1
• Filed: 08/10/2011
• Published: 02/16/2012
• Est. Priority Date: 08/16/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: CHEN, WANSHI, Montojo, Juan, Gaal, Peter, Luo, Xiliang
• Granted Patent: US 8,923,223 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• 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 5/0082 at predetermined intervals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

Techniques for sending control information in a wireless network are disclosed. A multi-carrier user equipment (UE) may receive a downlink grant on a physical downlink control channel (PDCCH) on a first component carrier (CC). The UE may also receive a data transmission associated with the PDCCH on a physical downlink shared channel (PDSCH) on a second CC. In some examples, the UE determines physical uplink control channel (PUCCH) resources for acknowledging the data transmission based on the first CC on which the PDCCH is received, the second CC on which the data transmission is received, and a transmission mode of the second CC. The UE may send acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

Claims

1. A method for wireless communication, comprising:

identifying a first component carrier (CC) on which a physical downlink control channel (PDCCH) is received by a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE;

identifying a second CC on which a data transmission associated with the PDCCH is received by the UE, the second CC being one of the plurality of CCs configured for the UE;

determining physical uplink control channel (PUCCH) resources based on the first CC on which the PDCCH is received and the second CC on which the data transmission is received; and

sending, by the UE, acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

2. The method of claim 1, further comprising:

determining a transmission mode of the second CC; and

determining the PUCCH resources based further on the transmission mode of the second CC.

3. The method of claim 1, further comprising:

determining a transmission mode of the second CC;

determining that K transport blocks are supported by the transmission mode of the second CC, where K is one or greater; and

determining K PUCCH resources based on the first CC on which the PDCCH is received and the second CC on which the data transmission is received.

4. The method of claim 1, wherein,

identifying the first CC on which the PDCCH is received further comprises identifying the first CC as a primary CC (PCC) for the UE,

identifying the second CC on which the data transmission is received further comprises identifying the second CC as the PCC, and

determining the PUCCH resources comprises determining the PUCCH resources based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

5. The method of claim 1, wherein:

identifying the first CC on which the PDCCH is received further comprises identifying the first CC as a primary CC (PCC) for the UE,

identifying the second CC on which the data transmission is further received comprises identifying the second CC as a secondary CC (SCC) for the UE, and

determining the PUCCH resources comprises determining the PUCCH resources based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

6. The method of claim 1, wherein:

identifying the first CC on which the PDCCH is received further comprises identifying the first CC as a secondary CC (SCC) for the UE,

identifying the second CC on which the data transmission is received further comprises identifying the second CC as the SCC, and

determining the PUCCH resources comprises determining the PUCCH resources based on PUCCH resources configured for the UE via higher layer signaling.

7. The method of claim 1, wherein

identifying the first CC on which the PDCCH is received further comprises identifying the first CC as a primary CC (PCC) for the UE, and

determining the PUCCH resources further comprises:

determining that a transmission mode of the second CC supports one transport block, and

determining one PUCCH resource based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

8. The method of claim 1, wherein

identifying the first CC on which the PDCCH is received further comprises identifying the first CC as a primary CC (PCC) for the UE, and

determining the PUCCH resources further comprises:

determining that a transmission mode of the second CC supports two transport blocks, and

determining two consecutive PUCCH resources based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

9. The method of claim 1, wherein determining the PUCCH resources comprises determining the PUCCH resources based on resources used to send the PDCCH on the first CC.

10. The method of claim 1, further comprising:

receiving first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

determining a first set of PUCCH resources based on a number of a first control channel element (CCE) of the first PDCCH; and

determining a second set of PUCCH resources based on a number of a first CCE of the second PDCCH.

11. The method of claim 10, wherein the first set includes two consecutive PUCCH resources determined based on the number of the first CCE of the first PDCCH, and the second set of PUCCH resources includes two consecutive PUCCH resources determined based on the number of the first CCE of the second PDCCH.

12. The method of claim 1, further comprising:

receiving a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC;

receiving a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

determining a second set of PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

13. The method of claim 1, further comprising receiving a downlink grant on the PDCCH for the data transmission received on the second CC.

14. The method of claim 1, further comprising:

receiving a message on the PDCCH for semi-persistent scheduling (SPS) of the data transmission received on the second CC.

15. The method of claim 1, further comprising:

receiving the data transmission on the second CC; and

determining acknowledgement/negative acknowledgement (ACK/NACK) information for the received data transmission.

16. The method of claim 15, wherein the sending the ACK/NACK information comprises sending the ACK/NACK information based on a predetermined PUCCH format with channel selection.

17. The method of claim 15, wherein sending the ACK/NACK information comprises:

selecting one of the PUCCH resources from the determined PUCCH resources; and

sending signaling for the ACK/NACK information on the selected PUCCH resource.

18. The method of claim 15, wherein determining the PUCCH resources comprises determining four PUCCH resources and the ACK/NACK information comprises four bits, and

wherein sending the ACK/NACK information comprises:

selecting one of the four PUCCH resources, and

sending signaling for the four bits of the ACK/NACK information on the selected PUCCH resource.

19. An apparatus for wireless communication, comprising:

means for identifying a first component carrier (CC) on which a physical downlink control channel (PDCCH) is received by a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE;

means for identifying a second CC on which a data transmission associated with the PDCCH is received by the UE, the second CC being one of the plurality of CCs configured for the UE;

means for determining physical uplink control channel (PUCCH) resources based on the first CC on which the PDCCH is received and the second CC on which the data transmission is received; and

means for sending acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

20. The apparatus of claim 19, further comprising:

means for determining a transmission mode of the second CC; and

means for determining the PUCCH resources based further on the transmission mode of the second CC.

21. The apparatus of claim 19, wherein:

the means for identifying the first CC on which the PDCCH is received comprise means for identifying the first CC as a primary CC (PCC) for the UE, the means for identifying the second CC on which the data transmission is received comprise means for identifying the second CC as the PCC or a secondary CC (SCC) for the UE, and

the means for determining the PUCCH resources comprise means for determining the PUCCH resources based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

22. The apparatus of claim 19, wherein:

the means for identifying the first CC on which the PDCCH is received comprise means for identifying the first CC as a secondary CC (SCC) for the UE,

the means for identifying the second CC on which the data transmission is received comprise means for identifying the second CC as the SCC, and

the means for determining the PUCCH resources comprise means for determining the PUCCH resources based on PUCCH resources configured for the UE via higher layer signaling.

23. The apparatus of claim 19, further comprising:

means for receiving first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

means for determining a first set of PUCCH resources based on a number of a first control channel element (CCE) of the first PDCCH; and

means for determining a second set of PUCCH resources based on a number of a first CCE of the second PDCCH.

24. The apparatus of claim 19, further comprising:

means for receiving a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC;

means for receiving a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

means for determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

means for determining a second set of PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

25. An apparatus for wireless communication, comprising:

at least one processor configured to;

identify a first component carrier (CC) on which a physical downlink control channel (PDCCH) is received by a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE,

identify a second CC on which a data transmission associated with the PDCCH is received by the UE, the second CC being one of the plurality of CCs configured for the UE,

determine physical uplink control channel (PUCCH) resources based on the first CC on which the PDCCH is received and the second CC on which the data transmission is received, and

send, by the UE, acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources; and

a memory coupled to the at least one processor.

26. The apparatus of claim 25, wherein the at least one processor is configured to:

determine a transmission mode of the second CC, and

determine the PUCCH resources based further on the transmission mode of the second CC.

27. The apparatus of claim 25, wherein the at least one processor is configured to:

identify the first CC on which the PDCCH is received as a primary CC (PCC) for the UE,

identify the second CC on which the data transmission is received as the PCC or a secondary CC (SCC) for the UE, and

determine the PUCCH resources available based on a number of a first control channel element (CCE) associated with the PDCCH received on the PCC.

28. The apparatus of claim 25, wherein the at least one processor is configured to:

identify the first CC on which the PDCCH is received as a secondary CC (SCC) for the UE,

identify the second CC on which the data transmission is received as the SCC, and

determine the PUCCH resources based on PUCCH resources configured for the UE via higher layer signaling.

29. The apparatus of claim 25, wherein the at least one processor is configured to:

receive first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC,

determine a first set of PUCCH resources based on a number of a first control channel element (CCE) of the first PDCCH, and

determine a second set of PUCCH resources based on a number of a first CCE of the second PDCCH.

30. The apparatus of claim 25, wherein the at least one processor is configured to:

receive a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, to receive a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC,

determine a first set of PUCCH resources based on a number of a first control channel element (CCE) of the first PDCCH, and

determine a second set of PUCCH resources based on PUCCH resources configured for the UE via higher layer signaling.

31. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing at least one processor to identify a first component carrier (CC) on which a physical downlink control channel (PDCCH) is received by a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE,

code for causing the at least one processor to identify a second CC on which a data transmission associated with the PDCCH is received by the UE, the second CC being one of the plurality of CCs configured for the UE,

code for causing the at least one processor to determine physical uplink control channel (PUCCH) resources based on the first CC on which the PDCCH is received and the second CC on which the data transmission is received, and

code for causing the at least one processor to send, by the UE, acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

32. A method for wireless communication, comprising:

identifying a first component carrier (CC) on which a physical downlink control channel (PDCCH) is sent to a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE;

identifying a second CC on which a data transmission associated with the PDCCH is sent to the UE, the second CC being one of the plurality of CCs configured for the UE;

determining physical uplink control channel (PUCCH) resources available for use by the UE based on the first CC on which the PDCCH is sent to the UE and the second CC on which the data transmission is sent to the UE; and

receiving, from the UE, acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

33. The method of claim 32, further comprising:

determining a transmission mode of the second CC; and

determining the PUCCH resources available for use by the UE based further on the transmission mode of the second CC.

34. The method of claim 32, further comprising:

determining a transmission mode of the second CC;

determining that K transport blocks are supported by the transmission mode of the second CC, where K is one or greater; and

determining K PUCCH resources available for use by the UE based on the first CC on which the PDCCH is sent to the UE and the second CC on which the data transmission is sent to the UE.

35. The method of claim 32, wherein:

identifying the first CC on which the PDCCH is sent further comprises identifying the first CC as a primary CC (PCC) for the UE,

identifying the second CC on which the data transmission is sent further comprises identifying the second CC as the PCC, and

determining the PUCCH resources comprises determining the PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

36. The method of claim 32, wherein:

identifying the first CC on which the PDCCH is sent further comprises identifying the first CC as a primary CC (PCC) for the UE,

identifying the second CC on which the data transmission is sent further comprises identifying the second CC as a secondary CC (SCC) for the UE, and

determining the PUCCH resources comprises determining the PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

37. The method of claim 32, wherein:

identifying the first CC on which the PDCCH is sent further comprises identifying the first CC as a secondary CC (SCC) for the UE,

identifying the second CC on which the data transmission is sent further comprises identifying the second CC as the SCC, and

determining the PUCCH resources comprises determining the PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

38. The method of claim 32, wherein the first CC on which the PDCCH is sent is a primary CC (PCC) for the UE, and

wherein the determining the PUCCH resources comprises:

determining that a transmission mode of the second CC supports one transport block, and

determining one PUCCH resource available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

39. The method of claim 32, wherein the first CC on which the PDCCH is sent is a primary CC (PCC) for the UE, and

wherein the determining the PUCCH resources comprises:

determining that a transmission mode of the second CC supports two transport blocks, and

determining two consecutive PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

40. The method of claim 32, further comprising:

sending first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

determining a second set of PUCCH resources available for use by the UE based on a number of a first CCE of the second PDCCH.

41. The method of claim 32, further comprising:

sending a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC;

sending a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

determining a second set of PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

42. The method of claim 32, further comprising sending a downlink grant on the PDCCH for the data transmission sent on the second CC.

43. The method of claim 32, further comprising sending a message on the PDCCH for semi-persistent scheduling (SPS) of the data transmission sent on the second CC.

44. The method of claim 32, wherein receiving the ACK/NACK information comprises:

receiving signaling for the ACK/NACK information on one of the PUCCH resources available for use by the UE, and

determining the ACK/NACK information based on the PUCCH resource on which the signaling is received and the received signaling.

45. An apparatus for wireless communication, comprising:

means for identifying a first component carrier (CC) on which a physical downlink control channel (PDCCH) is sent to a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE;

means for identifying a second CC on which a data transmission associated with the PDCCH is sent to the UE, the second CC being one of the plurality of CCs configured for the UE;

means for determining physical uplink control channel (PUCCH) resources available for use by the UE based on the first CC on which the PDCCH is sent to the UE and the second CC on which the data transmission is sent to the UE; and

means for receiving, from the UE, acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.

46. The apparatus of claim 45, further comprising:

means for determining a transmission mode of the second CC; and

means for determining the PUCCH resources available for use by the UE based further on the transmission mode of the second CC.

47. The apparatus of claim 45, wherein:

the means for identifying the first CC on which the PDCCH is sent comprise means for identifying the first CC as a primary CC (PCC) for the UE,

the means for identifying second CC on which the data transmission is sent comprise means for identifying the second CC as the PCC or a secondary CC (SCC) for the UE, and

the means for determining the PUCCH resources comprise means for determining the PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

48. The apparatus of claim 45, wherein:

the means for identifying the first CC on which the PDCCH is sent comprise means for identifying the first CC as a secondary CC (SCC) for the UE,

the means for identifying the second CC on which the data transmission is sent comprise means for identifying the second CC as the SCC, and

the means for determining the PUCCH resources comprises means for determining the PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

49. The apparatus of claim 45, further comprising:

means for sending first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

means for determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

means for determining a second set of PUCCH resources available for use by the UE based on a number of a first CCE of the second PDCCH.

50. The apparatus of claim 45, further comprising:

means for sending a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC;

means for sending a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC;

means for determining a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH; and

means for determining a second set of PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

51. An apparatus for wireless communication, comprising:

at least one processor configured to;

identify a first component carrier (CC) on which a physical downlink control channel (PDCCH) is sent to a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE,

identify a second CC on which a data transmission associated with the PDCCH is sent to the UE, the second CC being one of the plurality of CCs configured for the UE,

determine physical uplink control channel (PUCCH) resources available for use by the UE based on the first CC on which the PDCCH is sent to the UE and the second CC on which the data transmission is sent to the UE, and

receive acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources; and

a memory coupled to the at least one processor.

52. The apparatus of claim 51, wherein the at least one processor is configured to:

determine a transmission mode of the second CC, and

determine the PUCCH resources available for use by the UE based further on the transmission mode of the second CC.

53. The apparatus of claim 51, wherein the at least one processor is configured to:

identify first CC on which the PDCCH is sent as a primary CC (PCC) for the UE,

identify the second CC on which the data transmission is sent as the PCC or a secondary CC (SCC) for the UE, and

determine the PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) associated with the PDCCH sent on the PCC.

54. The apparatus of claim 51, wherein the at least one processor is configured to:

identify first CC on which the PDCCH is sent as a secondary CC (SCC) for the UE,

identify the second CC on which the data transmission is sent as the SCC, and

determine the PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

55. The apparatus of claim 51, wherein the at least one processor is configured to:

send first and second PDCCHs on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC, and the second PDCCH comprising a second downlink grant for a second data transmission on the second CC,

determine a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH, and

determine a second set of PUCCH resources available for use by the UE based on a number of a first CCE of the second PDCCH.

56. The apparatus of claim 51, wherein the at least one processor is configured to:

send a first PDCCH on the first CC, the first PDCCH comprising a first downlink grant for a first data transmission on the first CC,

send a second PDCCH on the second CC, the second PDCCH comprising a second downlink grant for a second data transmission on the second CC,

determine a first set of PUCCH resources available for use by the UE based on a number of a first control channel element (CCE) of the first PDCCH, and

determine a second set of PUCCH resources available for use by the UE based on PUCCH resources configured for the UE via higher layer signaling.

57. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing at least one processor to identify a first component carrier (CC) on which a physical downlink control channel (PDCCH) is sent to a user equipment (UE), the first CC being one of a plurality of CCs configured for the UE,

code for causing the at least one processor to identify a second CC on which a data transmission associated with the PDCCH is sent to the UE, the second CC being one of the plurality of CCs configured for the UE,

code for causing the at least one processor to determine physical uplink control channel (PUCCH) resources available for use by the UE based on the first CC on which the PDCCH is sent to the UE and the second CC on which the data transmission is sent to the UE, and

code for causing the at least one processor to receive acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission based on the PUCCH resources.