Enhanced PHICH Transmission for LTE-Advanced

• US 20130235812A1
• Filed: 07/10/2012
• Published: 09/12/2013
• Est. Priority Date: 03/06/2012
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Heo, Youn Hyoung, Gao, Shiwei, Xu, Hua, Blankenship, Yufei Wu, Jia, Yongkang
• Granted Patent: US 9,215,058 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• 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 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

A method is provided for communication in a wireless telecommunication system. The method comprises generating a sequence of signals of an enhanced physical HARQ (hybrid automatic repeat request) indicator channel (E-PHICH). The method further comprises mapping the sequence of signals of the E-PHICH to a first set of resource elements, wherein the first set of resource elements is multiplexed with a second set of resource elements over a set of virtual resource blocks, and wherein the second set of resource elements carries at least one of an enhanced physical downlink control channel (E-PDCCH) and a physical downlink shared channel (PDSCH).

Claims

1. A method for communication in a wireless telecommunication system, the method comprising:

generating, by a network element, a sequence of signals of an enhanced physical HARQ (hybrid automatic repeat request) indicator channel (E-PHICH); and

mapping, by the network element, the sequence of signals of the E-PHICH to a first set of resource elements, wherein the first set of resource elements is multiplexed with a second set of resource elements over a set of virtual resource blocks, and wherein the second set of resource elements carries at least one of an enhanced physical downlink control channel (E-PDCCH) and a physical downlink shared channel (PDSCH).

2. The method of claim 1, wherein the second set of resource elements carries an E-PDCCH configured with localized transmission.

3. The method of claim 1, wherein the second set of resource elements carries an E-PDCCH configured with distributed transmission.

4. The method of claim 1, wherein the first set of resource elements belongs to resource blocks where commonly monitored E-PDCCHs are transmitted.

5. The method of claim 1, wherein a location of the set of virtual resource blocks is predefined.

6. The method of claim 1, wherein, when the second set of resource elements carries the PDSCH, the E-PHICH is mapped to the first group of resource elements that would otherwise be used for PDSCH transmission.

7. The method of claim 6, wherein the PDSCH is punctured at the location of the first group of resource elements.

8. The method of claim 6, wherein rate matching is applied to the PDSCH in generating signals of the PDSCH.

9. The method of claim 1, wherein the set of virtual resource blocks is of localized type.

10. The method of claim 1, wherein the set of virtual resource blocks is of distributed type.

11. The method of claim 1, wherein frequency hopping is applied between a virtual resource block in a first slot of a subframe and a virtual resource block in a second slot of a subframe.

12. The method of claim 1, wherein a parameter of the set of virtual resource blocks is signaled to provide resource indication of a plurality of downlink control channels.

13. The method of claim 1, wherein transmit diversity is applied in generating the sequence of signals of the E-PHICH.

14. The method of claim 1, wherein a location of the set of virtual resource blocks is linked to a parameter specific to a transmission point.

15. A network element comprising:

a processor configured such that the network element generates a sequence of signals of an enhanced physical HARQ (hybrid automatic repeat request) indicator channel (E-PHICH), and further configured such that the network element maps the sequence of signals of the E-PHICH to a first set of resource elements, wherein the first set of resource elements is multiplexed with a second set of resource elements over a set of virtual resource blocks, and wherein the second set of resource elements carries at least one of an enhanced physical downlink control channel (E-PDCCH) and a physical downlink shared channel (PDSCH).

16. The network element of claim 15, wherein the second set of resource elements carries an E-PDCCH configured with localized transmission.

17. The network element of claim 15, wherein the second set of resource elements carries an E-PDCCH configured with distributed transmission.

18. The network element of claim 15, wherein the first set of resource elements belongs to resource blocks where commonly monitored E-PDCCHs are transmitted.

19. The network element of claim 15, wherein a location of the set of virtual resource blocks is predefined.

20. The network element of claim 15, wherein, when the second set of resource elements carries the PDSCH, the E-PHICH is mapped to the first group of resource elements that would otherwise be used for PDSCH transmission.

21. The network element of claim 20, wherein the PDSCH is punctured at the location of the first group of resource elements.

22. The network element of claim 20, wherein rate matching is applied to the PDSCH in generating signals of the PDSCH.

23. The network element of claim 15, wherein the set of virtual resource blocks is of localized type.

24. The network element of claim 15, wherein the set of virtual resource blocks is of distributed type.

25. The network element of claim 15, wherein frequency hopping is applied between a virtual resource block in a first slot of a subframe and a virtual resource block in a second slot of a subframe.

26. The network element of claim 15, wherein a parameter of the set of virtual resource blocks is signaled to provide resource indication of a plurality of downlink control channels.

27. The network element of claim 15, wherein transmit diversity is applied in generating the sequence of signals of the E-PHICH.

28. The network element of claim 15, wherein a location of the set of virtual resource blocks is linked to a parameter specific to a transmission point.

29. A user equipment (UE) comprising:

a processor configured such that the UE receives a sequence of signals of an enhanced physical HARQ (hybrid automatic repeat request) indicator channel (E-PHICH), wherein the sequence of signals has been mapped to a first set of resource elements, and wherein the first set of resource elements has been multiplexed with a second set of resource elements over a set of virtual resource blocks, and wherein the second set of resource elements carries at least one of an enhanced physical downlink control channel (E-PDCCH) and a physical downlink shared channel (PDSCH).

30. The UE of claim 29, wherein the second set of resource elements carries an E-PDCCH configured with localized transmission.

31. The UE of claim 29, wherein the second set of resource elements carries an E-PDCCH configured with distributed transmission.

32. The UE of claim 29, wherein the first set of resource elements belongs to resource blocks where commonly monitored E-PDCCHs are transmitted.

33. The UE of claim 29, wherein a location of the set of virtual resource blocks is predefined.

34. The UE of claim 29, wherein, when the second set of resource elements carries the PDSCH, the E-PHICH is mapped to the first group of resource elements that would otherwise be used for PDSCH transmission.

35. The UE of claim 34, wherein rate matching is applied to the PDSCH in receiving signals of the PDSCH.

36. The UE of claim 29, wherein the set of virtual resource blocks is of localized type.

37. The UE of claim 29, wherein the set of virtual resource blocks is of distributed type.

38. The UE of claim 29, wherein frequency hopping is applied between a virtual resource block in a first slot of a subframe and a virtual resource block in a second slot of a subframe.

39. The UE of claim 29, wherein a parameter of the set of virtual resource blocks is signaled to provide resource indication of a plurality of downlink control channels.

40. The UE of claim 29, wherein transmit diversity is assumed in receiving the sequence of signals of the E-PHICH.

41. The UE of claim 29, wherein a location of the set of virtual resource blocks is linked to a parameter specific to a transmission point.

42. The UE of claim 29, wherein the UE decodes the E-PHICH signals using a transmission point-specific reference signal.

43. The UE of claim 29, wherein the UE decodes the E-PHICH signals using a non-precoded demodulation reference signal.

44-139. -139. (canceled)