CELL RELAY MOBILITY PROCEDURES

• US 20100103845A1
• Filed: 10/22/2009
• Published: 04/29/2010
• Est. Priority Date: 10/24/2008
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Agashe, Parag A., Ulupinar, Fatih, Tenny, Nathan E., Shi, Yongsheng, Horn, Gavin B.
• Application Number:
  US12/604,210
• Publication Number:
  US 20100103845A1
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04L 2212/00 Encapsulation of packets
• CPC Class Codes: H04L 61/50 Address allocation
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04W 36/0072 of resource information of target access point
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

Systems and methodologies are described that facilitate performing intra-cluster and inter-cluster reselection for relay eNBs. In intra-cluster reselection, a relay eNB can reselect a disparate relay eNB and indicate its identifier in a bearer list update message. The disparate relay eNB and upstream eNBs (including the donor eNB) can update routing tables based at least in part on the identifier. In addition, the relay eNB can provide identifiers of downstream relay eNBs to facilitate updating routing tables for those identifiers as well. In an inter-cluster reselection, relay eNBs can release connection to downstream relay eNBs and re-attach to a wireless network to receive an identifier from a new donor eNB in the new cluster. Alternatively, the relay eNB can request an identifier from the donor eNB during reselection, notify downstream relay eNBs of the reselection, and/or request identifiers for one or more downstream relay eNBs.

Claims

1. A method, comprising:

communicating with a relay evolved Node B (eNB) to receive access to a wireless network;

establishing a connection with a disparate relay eNB to facilitate reselecting the disparate relay eNB where the disparate relay eNB and the relay eNB communicate with a same donor eNB to provide wireless network access; and

transmitting a bearer list update message to the disparate relay eNB comprising an identifier previously assigned by the donor eNB.

2. The method of claim 1, further comprising determining one or more identifiers relating to one or more downstream relay eNBs, wherein the bearer list update message further comprises the one or more identifiers of the one or more downstream relay eNBs.

3. The method of claim 1, wherein the establishing the connection with the disparate relay eNB includes handing over an S1 interface connection to the disparate relay eNB.

4. The method of claim 1, further comprising receiving a radio resource control (RRC) connection reconfiguration message from the relay eNB.

5. A wireless communications apparatus, comprising:

at least one processor configured to;

communicate with a relay evolved Node B (eNB) to receive access to a wireless network;

initiate reselection to a disparate relay eNB that communicates with a same donor eNB as the relay eNB; and

transmit a bearer list update message to the disparate relay eNB comprising an identifier of the wireless communications apparatus assigned by the donor eNB; and

a memory coupled to the at least one processor.

6. The wireless communications apparatus of claim 5, wherein the at least one processor is further configured to determine one or more identifiers related to one or more downstream relay eNBs, and the bearer list update message includes the one or more identifiers.

7. The wireless communications apparatus of claim 5, wherein the at least one processor is further configured to handover an S1 interface connection to the disparate relay eNB as part of initiating reselection.

8. The wireless communications apparatus of claim 5, wherein the at least one processor is further configured to receive a radio resource control (RRC) connection reconfiguration message from the relay eNB.

12. The wireless communications apparatus of claim 5, wherein the means for initiating reselection receives a radio resource control (RRC) connection reconfiguration message from the relay eNB.

9. An apparatus, comprising:

means for initiating reselection from a relay evolved Node B (eNB) to a disparate relay eNB that utilizes a same donor eNB to provide access to a wireless network; and

means for generating a bearer list update message comprising an identifier of the apparatus and transmitting the bearer list update message during reselection.

10. The apparatus of claim 9, further comprising means for determining one or more identifiers relating to one or more downstream relay eNBs, wherein the means for generating the bearer list update message includes the one or more identifiers of the one or more downstream relay eNBs in the bearer list update message.

11. The apparatus of claim 9, wherein the means for initiating reselection hands over an S1 interface connection to the disparate relay eNB.

13. A computer program product, comprising:

a computer-readable medium comprising;

code for causing at least one computer to communicate with a relay evolved Node B (eNB) to receive access to a wireless network;

code for causing the at least one computer to establish a connection with a disparate relay eNB to facilitate reselecting the disparate relay eNB where the disparate relay eNB and the relay eNB communicate with a same donor eNB to provide wireless network access; and

code for causing the at least one computer to transmit a bearer list update message to the disparate relay eNB comprising an identifier previously assigned by the donor eNB.

14. The computer program product of claim 13, wherein the computer-readable medium further comprises code for causing the at least one computer to determine one or more identifiers relating to one or more downstream relay eNBs, wherein the bearer list update message further comprises the one or more identifiers of the one or more downstream relay eNBs.

15. The computer program product of claim 13, wherein the code for causing the at least one computer to establish the connection with the disparate relay eNB hands over an S1 interface connection to the disparate relay eNB.

16. The computer program product of claim 13, wherein the computer-readable medium further comprises code for causing the at least one computer to receive a radio resource control (RRC) connection reconfiguration message from the relay eNB.

17. An apparatus, comprising:

a reselection initiating component that initializes reselection from a relay evolved Node B (eNB) to a disparate relay eNB that utilizes a same donor eNB to provide access to a wireless network; and

an update message generating component that creates a bearer list update message comprising an identifier of the apparatus and transmits the bearer list update message during reselection.

18. The apparatus of claim 17, further comprising a downstream parameter gathering component that determines one or more identifiers relating to one or more downstream relay eNBs, wherein the update message generating component includes the one or more identifiers of the one or more downstream relay eNBs in the bearer list update message.

19. The apparatus of claim 17, wherein the reselection initiating component hands over an S1 interface connection to the disparate relay eNB.

20. The apparatus of claim 17, wherein the reselection initiating component receives a radio resource control (RRC) connection reconfiguration message from the relay eNB.

21. A method, comprising:

receiving a bearer list update message from a relay evolved Node B (eNB) during reselection for the relay eNB;

determining an identifier of the relay eNB from the bearer list update message; and

associating the identifier of the relay eNB to a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

22. The method of claim 21, wherein the associating the identifier includes updating an existing association in the routing table corresponding to the identifier of the relay eNB.

23. The method of claim 21, wherein the associating the identifier includes adding an association corresponding to the identifier of the relay eNB and the bearer identifier of the next downstream relay eNB to the routing table.

24. The method of claim 21, further comprising determining one or more identifiers of downstream relay eNBs of the relay eNB from the bearer list update message.

25. The method of claim 24, further comprising associating the one or more identifiers of downstream relay eNBs with the bearer identifier of the next downstream relay eNB in the routing table.

26. The method of claim 21, further comprising transmitting a radio resource control (RRC) reconfiguration messaging to the relay eNB for changing a radio bearer configuration in response to receiving the bearer list update message.

27. A wireless communications apparatus, comprising:

at least one processor configured to;

obtain a bearer list update message from a relay evolved Node B (eNB) during reselection for the relay eNB;

discern an identifier of the relay eNB from the bearer list update message; and

store the identifier of the relay eNB with a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table; and

a memory coupled to the at least one processor.

28. The wireless communications apparatus of claim 27, wherein the at least one processor stores the identifier at least in part by updating an existing associating in the routing table corresponding to the identifier of the relay eNB.

29. The wireless communications apparatus of claim 27, wherein the at least one processor stores the identifier as a new identifier associated with the bearer identifier of the next downstream relay eNB in the routing table.

30. The wireless communications apparatus of claim 27, wherein the at least one processor is further configured to determine one or more identifiers of downstream relay eNBs of the relay eNB from the bearer list update message.

31. The wireless communications apparatus of claim 30, wherein the at least one processor is further configured to store an association between the one or more identifiers of downstream relay eNBs with the bearer identifier of the next downstream relay eNB in the routing table.

32. The wireless communications apparatus of claim 27, wherein the at least one processor is further configured to transmit a radio resource control (RRC) reconfiguration messaging to the relay eNB for changing a radio bearer configuration in response to receiving the bearer list update message.

33. An apparatus, comprising:

means for receiving a bearer list update message from a relay evolved Node B (eNB) during reselection for the relay eNB;

means for determining an identifier of the relay eNB from the bearer list update message; and

means for storing an association between the identifier of the relay eNB and a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

34. The apparatus of claim 33, wherein the means for storing the association updates an existing association related to the identifier of the relay eNB.

35. The apparatus of claim 33, wherein the means for storing the association creates a new association in the routing table for the identifier of the relay eNB.

36. The apparatus of claim 33, wherein the means for determining the identifier of the relay eNB further determines one or more identifiers of one or more downstream relay eNBs to the relay eNB from the bearer list update message.

37. The apparatus of claim 36, wherein the means for storing the association stores a disparate association between the one or more identifiers of the one or more downstream relay eNBs in the routing table with the bearer identifier of the next downstream relay eNB.

38. The apparatus of claim 33, wherein the means for receiving the bearer list update message transmits a radio resource control (RRC) reconfiguration messaging to the relay eNB for changing a radio bearer configuration in response to receiving the bearer list update message.

39. A computer program product, comprising:

a computer-readable medium comprising;

code for causing at least one computer to receive a bearer list update message from a relay evolved Node B (eNB) during reselection for the relay eNB;

code for causing the at least one computer to determine an identifier of the relay eNB from the bearer list update message; and

code for causing the at least one computer to associate the identifier of the relay eNB to a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

40. The computer program product of claim 39, wherein the code for causing the at least one computer to associate the identifier of the relay eNB to the bearer identifier of the next downstream relay eNB updates an existing association in the routing table corresponding to the identifier of the relay eNB.

41. The computer program product of claim 39, wherein the code for causing the at least one computer to associate the identifier of the relay eNB to the bearer identifier of the next downstream relay eNB adds an association corresponding to the identifier of the relay eNB and the bearer identifier of the next downstream relay eNB to the routing table.

42. The computer program product of claim 39, wherein the computer-readable medium further comprises code for causing the at least one computer to determine one or more identifiers of downstream relay eNBs of the relay eNB from the bearer list update message.

43. The computer program product of claim 42, wherein the computer-readable medium further comprises code for causing the at least one computer to associate the one or more identifiers of downstream relay eNBs with the bearer identifier of the next downstream relay eNB in the routing table.

44. The computer program product of claim 39, wherein the computer-readable medium further comprises code for causing the at least one computer to transmit a radio resource control (RRC) reconfiguration messaging to the relay eNB for changing a radio bearer configuration in response to receiving the bearer list update message.

45. An apparatus, comprising:

an update message receiving component that obtains a bearer list update message from a relay evolved Node B (eNB) during reselection for the relay eNB;

a parameter parsing component that determines an identifier of the relay eNB from the bearer list update message; and

a routing table component that stores an association between the identifier of the relay eNB and a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

46. The apparatus of claim 45, wherein the routing table component updates an existing association related to the identifier of the relay eNB.

47. The apparatus of claim 45, wherein the routing table component creates a new association in the routing table for the identifier of the relay eNB.

48. The apparatus of claim 45, wherein the parameter parsing component further determines one or more identifiers of one or more downstream relay eNBs to the relay eNB from the bearer list update message.

49. The apparatus of claim 48, wherein the routing table component stores a disparate association between the one or more identifiers of the one or more downstream relay eNBs in the routing table with the bearer identifier of the next downstream relay eNB.

50. The apparatus of claim 45, wherein the update message receiving component transmits a radio resource control (RRC) reconfiguration messaging to the relay eNB for changing a radio bearer configuration in response to receiving the bearer list update message.

51. A method, comprising:

communicating with a relay evolved Node B (eNB) to receive access to a wireless network;

establishing a connection with a disparate relay eNB to facilitate reselecting the disparate relay eNB where the disparate relay eNB communicates with a disparate donor eNB to provide wireless network access than the relay eNB; and

transmitting an identifier request to the disparate relay eNB to facilitate assignment of a unique identifier at the disparate donor eNB.

52. The method of claim 51, further comprising transmitting a connection release message to one or more downstream relay eNBs to release resources and radio bearers related thereto.

53. The method of claim 52, wherein the transmitting the identifier request includes transmitting a network attachment request.

54. The method of claim 53, further comprising receiving the unique identifier from the disparate donor eNB.

55. The method of claim 51, further comprising notifying one or more downstream relay eNBs of reselecting to the disparate relay eNB.

56. The method of claim 55, further comprising:

receiving a disparate unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

updating a routing table to associate the disparate unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

57. The method of claim 55, further comprising transmitting a request for one or more bearers for one or more downstream user equipments (UE) to the disparate relay eNB.

58. The method of claim 51, further comprising receiving parameters relating to one or more downstream relay eNBs, wherein the identifier request includes at least a portion of the parameters.

59. The method of claim 58, further comprising:

receiving the unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

updating a routing table to associate the unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

60. The method of claim 58, further comprising receiving an eNB global identifier (EGI) for the at least one of the one or more downstream relay eNBs, wherein the parameters include the EGI for the at least one of the one or more downstream relay eNBs, and the updating a routing table includes locating an existing association of at least one of the one or more downstream relay eNBs to a next downstream relay eNB based at least in part on the EGI.

61. A wireless communications apparatus, comprising:

at least one processor configured to;

receive wireless network access from a relay evolved Node B (eNB);

initiate reselection to a disparate relay eNB that communicates with a disparate donor eNB than the relay eNB to provide wireless network access; and

transmit an identifier request to the disparate relay eNB to facilitate assigning a unique identifier to the wireless communications apparatus by the disparate donor eNB; and

a memory coupled to the at least one processor.

62. The wireless communications apparatus of claim 61, wherein the at least one processor is further configured to transmit a connection release message to one or more downstream relay eNBs and/or user equipments (UE).

63. The wireless communications apparatus of claim 62, wherein the identifier request is a network attachment request.

64. The wireless communications apparatus of claim 63, wherein the at least one processor is further configured to receive the unique identifier from the disparate donor eNB.

65. The wireless communications apparatus of claim 61, wherein the at least one processor is further configured to notify one or more downstream relay eNBs of initiating reselection.

66. The wireless communications apparatus of claim 65, wherein the at least one processor is further configured to:

receive a disparate unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

update a routing table to associate the disparate unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

67. An apparatus, comprising:

means for initiating reselection from a relay evolved Node B (eNB) to a disparate relay eNB that utilizes a disparate donor eNB to provide access to a wireless network than the relay eNB; and

means for transmitting an identifier request to facilitate assignment of a unique identifier at the disparate donor eNB.

68. The apparatus of claim 67, further comprising means for transmitting a connection release message to one or more downstream relay eNBs.

69. The apparatus of claim 68, wherein the means for transmitting the identifier request transmits a network attachment request to the disparate donor eNB.

70. The apparatus of claim 67, further comprising means for notifying one or more downstream relay eNBs of the initiating reselection.

71. The apparatus of claim 70, further comprising:

means for receiving a disparate unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

means for updating a routing table to associate the disparate unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

72. A computer program product, comprising:

a computer-readable medium comprising;

code for causing at least one computer to communicate with a relay evolved Node B (eNB) to receive access to a wireless network;

code for causing the at least one computer to establish a connection with a disparate relay eNB to facilitate reselecting the disparate relay eNB where the disparate relay eNB communicates with a disparate donor eNB to provide wireless network access than the relay eNB; and

code for causing the at least one computer to transmit an identifier request to the disparate relay eNB to facilitate assignment of a unique identifier at the disparate donor eNB.

73. The computer program product of claim 72, wherein the computer-readable medium further comprises code for causing the at least one computer to transmit a connection release message to one or more downstream relay eNBs to release resources and radio bearers related thereto.

74. The computer program product of claim 73, wherein the code for causing the at least one computer to transmit the identifier request transmits a network attachment request.

75. The computer program product of claim 72, wherein the computer-readable medium further comprises code for causing the at least one computer to notify one or more downstream relay eNBs of reselecting to the disparate relay eNB.

76. The computer program product of claim 75, wherein the computer-readable medium further comprises:

code for causing the at least one computer to receive a disparate unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

code for causing the at least one computer to update a routing table to associate the disparate unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

77. An apparatus, comprising:

a reselection initiating component that initializes a reselection from a relay evolved Node B (eNB) to a disparate relay eNB that utilizes a disparate donor eNB to provide access to a wireless network than the relay eNB; and

a requesting component that transmits an identifier request to facilitate assignment of a unique identifier at the disparate donor eNB.

78. The apparatus of claim 77, further comprising a connection releasing component that transmits a connection release message to one or more downstream relay eNBs.

79. The apparatus of claim 78, wherein the requesting component is an attachment requesting component that transmits a network attachment request to the disparate donor eNB.

80. The apparatus of claim 77, further comprising a reselection notifying component that provides a notification to one or more downstream relay eNBs of the reselection.

81. The apparatus of claim 80, further comprising:

an identifier receiving component that obtains a disparate unique identifier from the disparate relay eNB relating to at least one of the one or more downstream relay eNBs; and

a routing table component that updates a routing table to associate the disparate unique identifier with a next downstream relay eNB in a communication path to the at least one of the one or more downstream relay eNBs.

82. A method, comprising:

receiving an identifier request from a relay evolved Node B (eNB) during reselection for the relay eNB;

obtaining an identifier for the relay eNB; and

associating the identifier of the relay eNB to a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

83. The method of claim 82, wherein the obtaining the identifier for the relay eNB includes generating the identifier for the relay eNB.

84. The method of claim 82, wherein the identifier request is part of a request for network attachment.

85. The method of claim 82, further comprising:

obtaining a disparate identifier for at least one downstream relay eNB of the relay eNB; and

associating the disparate identifier to the bearer identifier of the next downstream relay eNB in the communication path to the relay eNB in the routing table.

86. The method of claim 85, wherein the identifier request comprises one or more eNB global identifiers (EGI) related to the at least one downstream relay eNB of the relay eNB.

87. The method of claim 85, further comprising transmitting the disparate identifier to the relay eNB.

88. A wireless communications apparatus, comprising:

at least one processor configured to;

receive an identifier request from a relay evolved Node B (eNB) during reselection for the relay eNB;

obtain an identifier for the relay eNB; and

associate the identifier of the relay eNB in a routing table along with a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB; and

a memory coupled to the at least one processor.

89. The wireless communications apparatus of claim 88, wherein the at least one processor generates the identifier for the relay eNB.

90. The wireless communications apparatus of claim 88, wherein the identifier request is part of a network attachment request.

91. The wireless communications apparatus of claim 88, wherein the at least one processor is further configured to:

obtain a disparate identifier for at least one or more downstream relay eNBs of the relay eNB; and

associate the disparate identifier to the bearer identifier of the next downstream relay eNB in the communication path to the relay eNB in the routing table.

92. The wireless communications apparatus of claim 91, wherein the at least one processor is further configured to transmit the disparate identifier to the relay eNB.

93. An apparatus, comprising:

means for receiving an identifier request from a relay evolved Node B (eNB) during reselection for the relay eNB;

means for obtaining an identifier for the relay eNB; and

means for storing an association between the identifier of the relay eNB and a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

94. The apparatus of claim 93, wherein the means for obtaining the identifier for the relay eNB generates the identifier for the relay eNB.

95. The apparatus of claim 93, wherein the identifier request is part of a network attachment request.

96. The apparatus of claim 93, wherein the means for obtaining the identifier receives a disparate identifier for at least one downstream relay eNB, and the means for storing the association stores a disparate association between the disparate identifier and the bearer identifier of the next downstream relay eNB in the communication path to the relay eNB in the routing table.

97. The apparatus of claim 96, wherein the means for obtaining the identifier transmits the disparate identifier to the relay eNB.

98. A computer program product, comprising:

a computer-readable medium comprising;

code for causing at least one computer to receive an identifier request from a relay evolved Node B (eNB) during reselection for the relay eNB;

code for causing the at least one computer to obtain an identifier for the relay eNB; and

code for causing the at least one computer to associate the identifier of the relay eNB to a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

99. The computer program product of claim 98, wherein the code for causing the at least one computer to obtain the identifier for the relay eNB generates the identifier for the relay eNB.

100. The computer program product of claim 98, wherein the identifier request is part of a request for network attachment.

101. The computer program product of claim 98, wherein the computer-readable medium further comprises:

code for causing the at least one computer to obtain a disparate identifier for at least one downstream relay eNB of the relay eNB; and

code for causing the at least one computer to associate the disparate identifier to the bearer identifier of the next downstream relay eNB in the communication path to the relay eNB in the routing table.

102. The computer program product of claim 101, wherein the computer-readable medium further comprises code for causing the at least one computer to transmit the disparate identifier to the relay eNB.

103. An apparatus, comprising:

an identifier request receiving component that obtains an identifier request from a relay evolved Node B (eNB) during reselection for the relay eNB;

an identifier receiving component that obtains an identifier for the relay eNB; and

a routing table component that stores an association between the identifier of the relay eNB and a bearer identifier of a next downstream relay eNB in a communication path to the relay eNB in a routing table.

104. The apparatus of claim 103, wherein the identifier receiving component is an identifier assigning component that generates the identifier for the relay eNB.

105. The apparatus of claim 103, wherein the identifier request is part of a network attachment request, and the identifier request receiving component is an attachment request receiving component.

106. The apparatus of claim 103, wherein the identifier receiving component obtains a disparate identifier for at least one downstream relay eNB, and the routing table component stores a disparate association between the disparate identifier and the bearer identifier of the next downstream relay eNB in the communication path to the relay eNB in the routing table.

107. The apparatus of claim 106, wherein the identifier receiving component transmits the disparate identifier to the relay eNB.