Method and apparatus that facilitates detecting system information blocks in a heterogeneous network

• US 8,724,563 B2
• Filed: 08/20/2010
• Issued: 05/13/2014
• Est. Priority Date: 08/24/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Yoo, Taesang, Luo, Tao, Seong, Kibeom
• Primary Examiner(s): Duong, Frank
• Application Number:
  US12/860,747
• Publication Number:
  US 20110205982A1
• Time in Patent Office: 1,362 Days
• Field of Search: 370/320, 370328-339, 370/342, 370/350
• 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 1/0039 other detection of signalling, e.g. detection of TFCI explicit signalling H04L1/0046, H04L27/0012 and H04L25/0262 take precedence
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

Aspects are disclosed for detecting a system information block (SIB) within a heterogeneous network. In one aspect, a type of scheduling information pertaining to an SIB is selected, and a parameter known to a wireless terminal is associated with the type of scheduling information. The wireless terminal then decodes the SIB by deriving the scheduling information from the known parameters, without having to decode a Physical Downlink Control Channel.

Claims

1. A method that facilitates detecting a system information block, the method comprising:

selecting, via a processor, a type of scheduling information pertaining to the system information block, wherein the type of scheduling information includes at least a resource block allocation;

associating a known parameter with the type of scheduling information, wherein a decoding of the system information block is facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission; and

transmitting the system information block to a wireless terminal.

2. The method of claim 1, wherein the system information block is a type one system information block (SIB1).

3. The method of claim 1, wherein the known parameter is a system frame number or a cell identifier.

4. The method of claim 1, further comprising determining the known parameter based on a desired scheduling of the system information block relative to a scheduling of an interfering system information block.

5. The method of claim 4, wherein the desired scheduling is an orthogonal scheduling, and wherein the resource block allocation is a non-overlapping resource block allocation relative to an interfering resource block allocation.

6. The method of claim 4, wherein the desired scheduling is a fully colliding scheduling, and wherein the resource block allocation is an identical resource block allocation relative to an interfering resource block allocation.

7. The method of claim 6, further comprising synchronizing a system frame number with an interfering system frame number, wherein the identical resource block allocation is derivable from the system frame number.

8. The method of claim 4, wherein the desired scheduling is a partly colliding scheduling, and wherein the resource block allocation includes overlapping resource blocks and non-overlapping resource blocks relative to an interfering resource block allocation.

9. The method of claim 1, further comprising constraining a second type of scheduling information.

10. The method of claim 9, wherein the constraining comprises limiting a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations performed by the wireless terminal is facilitated by the limiting.

11. The method of claim 9, wherein the transmitting comprises communicating an indication of a rule to the wireless terminal, wherein the rule is associated with the constraining of the second type of scheduling information.

12. The method of claim 1, wherein the transmitting comprises communicating the system information block to a plurality of wireless terminals via a plurality of redundancy versions.

13. The method of claim 12, wherein a first subset of the plurality of redundancy versions is associated with legacy wireless terminals, and wherein a second subset of the plurality of redundancy versions is associated with non-legacy wireless terminals.

14. The method of claim 13, wherein the transmitting comprises providing the second subset of the plurality of redundancy versions according to scheduling information derived from the known parameter, wherein the known parameter is known by at least one of the non-legacy wireless terminals.

15. The method of claim 1, wherein the transmitting comprises communicating an indication of a rule to the wireless terminal, wherein the rule is associated with the associating of the known parameter with the type of scheduling information.

16. An apparatus configured to facilitate detecting a system information block, the apparatus comprising:

a processor configured to execute computer executable components stored in memory, the components including;

a scheduling component configured to select a type of scheduling information pertaining to the system information block, wherein the type of scheduling information includes at least a resource block allocation;

an association component configured to associate a known parameter with the type of scheduling information, wherein a decoding of the system information block is facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission; and

a communication component configured to transmit the system information block to a wireless terminal.

17. The apparatus of claim 16, wherein the system information block is a type one system information block (SIB1).

18. The apparatus of claim 16, wherein the known parameter is a system frame number or a cell identifier.

19. The apparatus of claim 16, wherein the association component is configured to determine the known parameter based on a desired scheduling of the system information block relative to a scheduling of an interfering system information block.

20. The apparatus of claim 19, wherein the desired scheduling is an orthogonal scheduling, and wherein the resource block allocation is a non-overlapping resource block allocation relative to an interfering resource block allocation.

21. The apparatus of claim 19, wherein the desired scheduling is a fully colliding scheduling, and wherein the resource block allocation is an identical resource block allocation relative to an interfering resource block allocation.

22. The apparatus of claim 21, wherein the communication component is configured to synchronize a system frame number with an interfering system frame number, and wherein the identical resource block allocation is derivable from the system frame number.

23. The apparatus of claim 19, wherein the desired scheduling is a partly colliding scheduling, and wherein the resource block allocation includes overlapping resource blocks and non-overlapping resource blocks relative to an interfering resource block allocation.

24. The apparatus of claim 16, wherein the scheduling component is configured to constrain a second type of scheduling information.

25. The apparatus of claim 24, wherein the scheduling component is configured to limit a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations performed by the wireless terminal is facilitated by the limit.

26. The apparatus of claim 24, wherein the communication component is configured to communicate an indication of a rule to the wireless terminal, wherein the rule is associated with a constraint of the second type of scheduling information.

27. The apparatus of claim 16, wherein the communication component is configured to communicate the system information block to a plurality of wireless terminals via a plurality of redundancy versions.

28. The apparatus of claim 27, wherein a first subset of the plurality of redundancy versions is associated with legacy wireless terminals, and wherein a second subset of the plurality of redundancy versions is associated with non-legacy wireless terminals.

29. The apparatus of claim 28, wherein the communication component is configured to provide the second subset of the plurality of redundancy versions according to scheduling information derived from the known parameter, and wherein the known parameter is known by at least one of the non-legacy wireless terminals.

30. The apparatus of claim 16, wherein the communication component is configured to communicate an indication of a rule to the wireless terminal, wherein the rule is associated with the association of the known parameter with the type of scheduling information.

31. A computer program product that facilitates detecting a system information block, comprising:

a non-transitory computer-readable storage medium comprising code for causing at least one computer to;

select a type of scheduling information pertaining to the system information block, wherein the type of scheduling information includes at least a resource block allocation;

associate a known parameter with the type of scheduling information, wherein a decoding of the system information block is facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission; and

transmit the system information block to a wireless terminal.

32. The computer program product of claim 31, wherein the system information block is a type one system information block (SIB1).

33. The computer program product of claim 31, wherein the known parameter is a system frame number or a cell identifier.

34. The computer program product of claim 31, wherein the type of scheduling information is a resource block allocation.

35. The computer program product of claim 31, wherein the code causes the at least one computer to determine the known parameter based on a desired scheduling of the system information block relative to a scheduling of an interfering system information block.

36. The computer program product of claim 35, wherein the desired scheduling is an orthogonal scheduling, and wherein the resource block allocation is a non-overlapping resource block allocation relative to an interfering resource block allocation.

37. The computer program product of claim 35, wherein the desired scheduling is a fully colliding scheduling, and wherein the resource block allocation is an identical resource block allocation relative to an interfering resource block allocation.

38. The computer program product of claim 37, wherein the code causes the at least one computer to synchronize a system frame number with an interfering system frame number, and wherein the identical resource block allocation is derivable from the system frame number.

39. The computer program product of claim 35, wherein the desired scheduling is a partly colliding scheduling, and wherein the resource block allocation includes overlapping resource blocks and non-overlapping resource blocks relative to an interfering resource block allocation.

40. The computer program product of claim 31, wherein the code causes the at least one computer to constrain a second type of scheduling information.

41. The computer program product of claim 40, wherein the code causes the at least one computer to limit a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations performed by the wireless terminal is facilitated by the limit.

42. The computer program product of claim 40, wherein the code causes the at least one computer to communicate an indication of a rule to the wireless terminal, wherein the rule is associated with a constraint of the second type of scheduling information.

43. An apparatus configured to facilitate detecting a system information block, the apparatus comprising:

means for selecting a type of scheduling information pertaining to the system information block, wherein the type of scheduling information includes at least a resource block allocation;

means for associating a known parameter with the type of scheduling information, wherein a decoding of the system information block is facilitated by an association of the known parameter with the type of scheduling information independent of a Physical Downlink Control Channel transmission; and

means for transmitting the system information block to a wireless terminal.

44. The apparatus of claim 43, wherein the known parameter is a system frame number or a cell identifier.

45. The apparatus of claim 43, wherein the means for associating is configured to determine the known parameter based on a desired scheduling of the system information block relative to a scheduling of an interfering system information block.

46. The apparatus of claim 45, wherein the desired scheduling is an orthogonal scheduling, and wherein the resource block allocation is a non-overlapping resource block allocation relative to an interfering resource block allocation.

47. The apparatus of claim 45, wherein the desired scheduling is a fully colliding scheduling, and wherein the resource block allocation is an identical resource block allocation relative to an interfering resource block allocation.

48. The apparatus of claim 47, wherein the means for transmitting is configured to synchronize a system frame number with an interfering system frame number, and wherein the identical resource block allocation is derivable from the system frame number.

49. The apparatus of claim 45, wherein the desired scheduling is a partly colliding scheduling, and wherein the resource block allocation includes overlapping resource blocks and non-overlapping resource blocks relative to an interfering resource block allocation.

50. The apparatus of claim 43, wherein the means for transmitting is configured to communicate the system information block to a plurality of wireless terminals via a plurality of redundancy versions.

51. The apparatus of claim 50, wherein a first subset of the plurality of redundancy versions is associated with legacy wireless terminals, and wherein a second subset of the plurality of redundancy versions is associated with non-legacy wireless terminals.

52. The apparatus of claim 51, wherein the means for transmitting is configured to provide the second subset of the plurality of redundancy versions according to scheduling information derived from the known parameter, and wherein the known parameter is known by at least one of the non-legacy wireless terminals.

53. The apparatus of claim 43, wherein the means for transmitting is configured to communicate an indication of a rule to the wireless terminal, wherein the rule is associated with the association of the known parameter with the type of scheduling information.

54. A method that facilitates detecting a system information block, the method comprising:

receiving a transmission of the system information block;

deriving, via a processor, a type of scheduling information associated with the transmission from at least one known parameter, wherein the type of scheduling information includes at least a resource block allocation; and

decoding the system information block based on the type of scheduling information, wherein the decoding is performed independent of a Physical Downlink Control Channel transmission.

55. The method of claim 54, wherein the system information block is a type one system information block (SIB1).

56. The method of claim 54, wherein the at least one known parameter is a system frame number or a cell identifier.

57. The method of claim 54, further comprising identifying a constraint associated with a second type of scheduling information.

58. The method of claim 57, wherein the constraint is associated with a limiting of a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations is facilitated by the constraint.

59. The method of claim 54, wherein the transmission is received via a plurality of redundancy versions, and wherein the receiving comprises distinguishing a first subset of the plurality of redundancy versions associated with legacy wireless terminals from a second subset of the plurality of redundancy versions associated with non-legacy wireless terminals.

60. The method of claim 54, further comprising detecting a collision between a first system information block and a second system information block.

61. The method of claim 60, further comprising cancelling reconstructed symbols corresponding to contents decoded from the first system information block, wherein the cancelling is based on a detection of the collision.

62. The method of claim 60, wherein the detecting is based on an association between the type of scheduling information and the at least one known parameter.

63. An apparatus configured to facilitate detecting a system information block, the apparatus comprising:

a processor configured to execute computer executable components stored in memory, the components including;

a communication component configured to receive a transmission of the system information block;

a derivation component configured to derive a type of scheduling information associated with the transmission from at least one known parameter, wherein the type of scheduling information includes at least a resource block allocation; and

a decoding component configured to perform a decoding of the system information block based on the type of scheduling information, wherein the decoding is performed independent of a Physical Downlink Control Channel transmission.

64. The apparatus of claim 63, wherein the system information block is a type one system information block (SIB1).

65. The apparatus of claim 63, wherein the at least one known parameter is a system frame number or a cell identifier.

66. The apparatus of claim 63, further comprising a constraint component configured to identify a constraint associated with a second type of scheduling information.

67. The apparatus of claim 66, wherein the constraint is associated with a limiting of a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations is facilitated by the constraint.

68. The apparatus of claim 63, wherein the transmission is received via a plurality of redundancy versions, and wherein the communication component is configured to distinguish a first subset of the plurality of redundancy versions associated with legacy wireless terminals from a second subset of the plurality of redundancy versions associated with non-legacy wireless terminals.

69. The apparatus of claim 63, further comprising a detection component configured to detect a collision between a first system information block and a second system information block.

70. The apparatus of claim 69, further comprising a cancellation component configured to cancel reconstructed symbols corresponding to contents decoded from the first system information block based on a detection of the collision.

71. The apparatus of claim 69, wherein the detection is based on an association between the type of scheduling information and the at least one known parameter.

72. A computer program product that facilitates detecting a system information block, comprising:

a non-transitory computer-readable storage medium comprising code for causing at least one computer to;

receive a transmission of the system information block;

derive a type of scheduling information associated with the transmission from at least one known parameter, wherein the type of scheduling information includes at least a resource block allocation; and

decode the system information block based on the type of scheduling information, wherein the system information block is decoded independent of a Physical Downlink Control Channel transmission.

73. The computer program product of claim 72, wherein the code causes the at least one computer to identify a constraint associated with a second type of scheduling information.

74. The computer program product of claim 73, wherein the constraint is associated with a limiting of a possible number of modulation and coding scheme choices, and wherein a reduction of blind decode operations is facilitated by the constraint.

75. The computer program product of claim 72, wherein the transmission is received via a plurality of redundancy versions, and wherein the code causes the at least one computer to distinguish a first subset of the plurality of redundancy versions associated with legacy wireless terminals from a second subset of the plurality of redundancy versions associated with non-legacy wireless terminals.

76. The computer program product of claim 72, wherein the code causes the at least one computer to detect a collision between a first system information block and a second system information block.

77. The computer program product of claim 76, wherein the code causes the at least one computer to cancel reconstructed symbols corresponding to contents decoded from the first system information block based on a detection of the collision.

78. The computer program product of claim 76, wherein the detection is based on an association between the type of scheduling information and the at least one known parameter.

79. An apparatus configured to facilitate detecting a system information block, the apparatus comprising:

means for receiving a transmission of the system information block;

means for deriving a type of scheduling information associated with the transmission from at least one known parameter, wherein the type of scheduling information includes at least a resource block allocation; and

means for decoding the system information block based on the type of scheduling information, wherein the system information block is decoded independent of a Physical Downlink Control Channel transmission.

80. The apparatus of claim 79, wherein the system information block is a type one system information block (SIB1).

81. The apparatus of claim 79, wherein the at least one known parameter is a system frame number or a cell identifier.