REFERENCE SIGNALING FOR A HIGH-MOBILITY WIRELESS COMMUNICATION DEVICE

• US 20110111781A1
• Filed: 11/08/2010
• Published: 05/12/2011
• Est. Priority Date: 11/09/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Luo, Tao, Montojo, Juan, Chen, Wanshi, Zhang, Xiaoxia
• Granted Patent: US 8,582,516 B2
• Time in Patent Office: Days
• US Class Current: 455/507
• CPC Class Codes: H04B 7/02 Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas RAKE receivers H04B1/7115
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 27/26136 Pilot sequence conveying additional information
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

A base station for enabling communication with a high-mobility wireless communication device is described. The base station includes a processor and instructions stored in memory. The base station identifies a high-mobility wireless communication device and sends a reference signal configuration. The base station also allocates an additional specific reference signal and sends the additional specific reference signal to the high-mobility wireless communication device.

Claims

1. A base station for enabling communication with a high-mobility wireless communication device, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

identify a high-mobility wireless communication device;

send a reference signal configuration;

allocate an additional specific reference signal; and

send the additional specific reference signal to the high-mobility wireless communication device.

2. The base station of claim 1, wherein allocating an additional specific reference signal comprises:

using a baseline specific reference signal; and

adding an additional specific reference signal in an element not including the baseline specific reference signal.

3. The base station of claim 1, wherein allocating an additional specific reference signal further comprises adding the additional specific reference signal in an element used for a common reference signal.

4. The base station of claim 1, wherein allocating an additional specific reference signal further comprises adding the additional specific reference signal in an element used for a baseline specific reference signal.

5. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying a same precoding to the additional specific reference signal as is used for a baseline specific reference signal.

6. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying a same scrambling sequence as in a baseline specific reference signal case.

7. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying a different scrambling sequence as in a baseline specific reference signal case.

8. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying a same mapping mechanism as in a baseline specific reference signal case.

9. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying a different mapping mechanism from a baseline specific reference signal case.

10. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying transmission rate matching around the additional specific reference signal.

11. The base station of claim 1, wherein allocating an additional specific reference signal comprises applying puncturing.

12. The base station of claim 1, wherein sending a reference signal configuration comprises sending the reference signal configuration using a layer-3 limited rank transmission.

13. The base station of claim 12, wherein the layer-3 limited rank transmission is separately configured or uses a codebook subset restriction mechanism.

14. The base station of claim 1, wherein sending a reference signal configuration comprises sending the reference signal configuration using explicit layer-3 signaling.

15. The base station of claim 1, wherein sending a reference signal configuration comprises sending the reference signal configuration using explicit Physical Downlink Control Channel (PDCCH) signaling.

16. The base station of claim 1, wherein sending a reference signal configuration comprises sending the reference signal configuration using implicit Physical Downlink Control Channel (PDCCH) signaling.

17. The base station of claim 1, wherein the reference signal configuration distinguishes between Multimedia Broadcast over a Single-Frequency Network (MBSFN) subframes and non-MBSFN subframes.

18. The base station of claim 1, wherein the base station is a Node B.

19. The base station of claim 1, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

20. The base station of claim 1, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

21. A wireless communication device for utilizing reference signaling, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

receive a reference signal configuration;

receive an additional specific reference signal;

process the additional specific reference signal; and

send information based on the additional specific reference signal.

22. The wireless communication device of claim 21, wherein the instructions are further executable to determine whether the wireless communication device is a high-mobility wireless communication device.

23. The wireless communication device of claim 22, wherein the instructions are further executable to send a high-mobility indicator if the wireless communication device is a high-mobility wireless communication device.

24. The wireless communication device of claim 21, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using a layer-3 limited rank transmission.

25. The wireless communication device of claim 24, wherein the layer-3 limited rank transmission is separately configured or uses a codebook subset restriction mechanism.

26. The wireless communication device of claim 21, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using explicit layer-3 signaling.

27. The wireless communication device of claim 21, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using explicit Physical Downlink Control Channel (PDCCH) signaling.

28. The wireless communication device of claim 21, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using implicit Physical Downlink Control Channel (PDCCH) signaling.

29. The wireless communication device of claim 21, wherein the reference signal configuration distinguishes between Multimedia Broadcast over a Single-Frequency Network (MBSFN) subframes and non-MBSFN subframes.

30. The wireless communication device of claim 21, wherein processing the additional specific reference signal comprises generating feedback based on the additional specific reference signal.

31. The wireless communication device of claim 21, wherein the wireless communication device is a User Equipment (UE).

32. The wireless communication device of claim 21, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

33. The wireless communication device of claim 21, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

34. A method for enabling communication with a high-mobility wireless communication device, comprising:

identifying, by a base station, a high-mobility wireless communication device;

sending a reference signal configuration;

allocating, by the base station, an additional specific reference signal; and

sending, from the base station, the additional specific reference signal to the high-mobility wireless communication device.

35. The method of claim 34, wherein allocating an additional specific reference signal comprises:

using a baseline specific reference signal; and

adding an additional specific reference signal in an element not including the baseline specific reference signal.

36. The method of claim 34, wherein allocating an additional specific reference signal further comprises adding the additional specific reference signal in an element used for a common reference signal.

37. The method of claim 34, wherein allocating an additional specific reference signal further comprises adding the additional specific reference signal in an element used for a baseline specific reference signal.

38. The method of claim 34, wherein allocating an additional specific reference signal comprises applying a same precoding to the additional specific reference signal as is used for a baseline specific reference signal.

39. The method of claim 34, wherein allocating an additional specific reference signal comprises applying a same scrambling sequence as in a baseline specific reference signal case.

40. The method of claim 34, wherein allocating an additional specific reference signal comprises applying a different scrambling sequence as in a baseline specific reference signal case.

41. The method of claim 34, wherein allocating an additional specific reference signal comprises applying a same mapping mechanism as in a baseline specific reference signal case.

42. The method of claim 34, wherein allocating an additional specific reference signal comprises applying a different mapping mechanism from a baseline specific reference signal case.

43. The method of claim 34, wherein allocating an additional specific reference signal comprises applying transmission rate matching around the additional specific reference signal.

44. The method of claim 34, wherein allocating an additional specific reference signal comprises applying puncturing.

45. The method of claim 34, wherein sending a reference signal configuration comprises sending the reference signal configuration using a layer-3 limited rank transmission.

46. The method of claim 45, wherein the layer-3 limited rank transmission is separately configured or uses a codebook subset restriction mechanism.

47. The method of claim 34, wherein sending a reference signal configuration comprises sending the reference signal configuration using explicit layer-3 signaling.

48. The method of claim 34, wherein sending a reference signal configuration comprises sending the reference signal configuration using explicit Physical Downlink Control Channel (PDCCH) signaling.

49. The method of claim 34, wherein sending a reference signal configuration comprises sending the reference signal configuration using implicit Physical Downlink Control Channel (PDCCH) signaling.

50. The method of claim 34, wherein the reference signal configuration distinguishes between Multimedia Broadcast over a Single-Frequency Network (MBSFN) subframes and non-MBSFN subframes.

51. The method of claim 34, wherein the base station is a Node B.

52. The method of claim 34, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

53. The method of claim 34, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

54. A method for utilizing reference signaling, comprising:

receiving a reference signal configuration;

receiving, on a wireless communication device, an additional specific reference signal;

processing, on the wireless communication device, the additional specific reference signal; and

sending information based on the additional specific reference signal.

55. The method of claim 54, further comprising determining whether the wireless communication device is a high-mobility wireless communication device.

56. The method of claim 54, further comprising sending a high-mobility indicator if the wireless communication device is a high-mobility wireless communication device.

57. The method of claim 54, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using a layer-3 limited rank transmission.

58. The method of claim 57, wherein the layer-3 limited rank transmission is separately configured or uses a codebook subset restriction mechanism.

59. The method of claim 54, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using explicit layer-3 signaling.

60. The method of claim 54, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using explicit Physical Downlink Control Channel (PDCCH) signaling.

61. The method of claim 54, wherein receiving a reference signal configuration comprises receiving the reference signal configuration using implicit Physical Downlink Control Channel (PDCCH) signaling.

62. The method of claim 54, wherein the reference signal configuration distinguishes between Multimedia Broadcast over a Single-Frequency Network (MBSFN) subframes and non-MBSFN subframes.

63. The method of claim 54, wherein processing the additional specific reference signal comprises generating feedback based on the additional specific reference signal.

64. The method of claim 54, wherein the wireless communication device is a User Equipment (UE).

65. The method of claim 54, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

66. The method of claim 54, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

67. A computer-program product for enabling communication with a high-mobility wireless communication device, the computer-program product comprising a non-transitory tangible computer-readable medium having instructions thereon, the instructions comprising:

code for causing a base station to identify a high-mobility wireless communication device;

code for causing the base station to send a reference signal configuration;

code for causing the base station to allocate an additional specific reference signal; and

code for causing the base station to send the additional specific reference signal to the high-mobility wireless communication device.

68. The computer-program product of claim 67, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

69. The computer-program product of claim 67, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

70. A computer-program product for utilizing reference signaling, the computer-program product comprising a non-transitory tangible computer-readable medium having instructions thereon, the instructions comprising:

code for causing a wireless communication device to receive a reference signal configuration;

code for causing the wireless communication device to receive an additional specific reference signal;

code for causing the wireless communication device to process the additional specific reference signal; and

code for causing the wireless communication device to send information based on the additional specific reference signal.

71. The computer-program product of claim 70, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

72. The computer-program product of claim 70, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

73. An apparatus for enabling communication with a high-mobility wireless communication device, comprising:

means for identifying a high-mobility wireless communication device;

means for sending a reference signal configuration;

means for allocating an additional specific reference signal; and

means for sending the additional specific reference signal to the high-mobility wireless communication device.

74. The apparatus of claim 73, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

75. The apparatus of claim 73, wherein the additional specific reference signal is in addition to a baseline specific reference signal.

76. An apparatus for utilizing reference signaling, comprising:

means for receiving a reference signal configuration;

means for receiving an additional specific reference signal;

means for processing the additional specific reference signal; and

means for sending information based on the additional specific reference signal.

77. The apparatus of claim 76, wherein the specific reference signal is a User Equipment-specific Reference Signal (UE-RS).

78. The apparatus of claim 76, wherein the additional specific reference signal is in addition to a baseline specific reference signal.