Radio link parameter updating method in mobile communication system

• US 20040009767A1
• Filed: 04/04/2003
• Published: 01/15/2004
• Est. Priority Date: 04/06/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Eun-Jung, Lee, Young-Dae, Park, Jin-Young
• Granted Patent: US 7,822,044 B2
• Time in Patent Office: Days
• US Class Current: 455/422.1
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel

Abstract

A radio link (RL) parameter updating method of a high speed downlink packet access (HSDPA) system in a mobile communication system is disclosed. According to a radio channel situation of a terminal, an RL parameter applied to transmission and reception of control information between the terminal and a base station is dynamically controlled. For this purpose, the RL parameter updating method includes: a step in which the base station determines whether to update an HSDPA related parameter and transmits the parameter update information to the RNC to trigger updating of the RL parameter; and a step in which the RNC updates the HSDPA related parameter and transmits it to the terminal. The parameter update information is delivered through an RL parameter update response message, and the RNC is a serving RNC. Accordingly, because the base station is able to control the HSDPA related parameter, the HSDPA scheduling at the base station is guaranteed, so that a radio resource can be effectively used depending on the radio channel situation.

Claims

1. A radio link parameter updating method for a system having a control center and a plurality of radio link connection nodes, comprising:

deciding a radio link updating at a radio link connection node; and

triggering updating of a radio link parameter from the radio link connection node to the control center.

2. The method of claim 1, wherein the control center is a radio network control (RNC).

3. The method of claim 1, wherein the radio link connection node is a node B.

4. The method of claim 1, wherein the radio link parameter is a high speed downlink packet access (HSDPA) related parameter.

5. The method of claim 1, wherein the radio link connection node triggers the parameter updating by sending parameter information to the control center.

6. The method of claim 5, wherein the parameter information includes at least one of a channel quality indicator (CQI) feedback cycle, an ACK/NACK repetition factor and a CQI repetition factor.

7. The method of claim 6, wherein the parameter information further includes a CQI power offset, an ACK power offset and/or NACK power offset, and HS-SCCH code change indicator.

8. The method of claim 1, wherein the radio link connection node triggers parameter updating to the control center when a radio channel state of a terminal is changed.

9. The method of claim 1, wherein the radio link connection node triggers parameter updating at every regular periods or when a parameter indicative of a state of a radio link exceeds a certain threshold value.

10. The method of claim 9, wherein the period and the threshold value are internally set.

11. The method of claim 9, wherein the period and the threshold value are provided from the control center.

12. The method of claim 5, wherein the radio link connection node controls to-be-updated parameter information according to a radio link configuration information of the terminal.

13. The method of claim 12, wherein the radio link configuration information is sent from the control center.

14. The method of claim 12, wherein the radio link connection node analyzes the radio link configuration information and triggers parameter updating to the control center only when the terminal initiates and terminates a handover.

15. The method of claim 12, wherein the radio link connection node triggers parameter updating to the control center only when the number of radio links of the terminal changes.

16. The method of claim 1, wherein the radio link connection node has a hybrid automatic repeat request (HARQ) function.

17. The method of claim 1 further comprising:

transmitting the parameter updated at the control center and time information to the terminal.

18. The method of claim 17, wherein the time information is activation time or a connection frame number (CFN) parameter.

19. The method of claim 1, wherein the control center is a serving RNC.

112. An apparatus configured according to said at least one configuration parameter of claim 1.

113. The apparatus of claim 112, wherein the apparatus is a mobile station.

114. The apparatus of claim 113, wherein the mobile station is user equipment.

115. The apparatus of claim 114, wherein said user equipment is UE.

116. The apparatus of claim 112, wherein the apparatus receives said at least one configuration parameter from the antenna station.

20. A radio link parameter updating method for a system having a control center and a plurality of radio link connection nodes, comprising:

detecting a state of a radio link at a radio link connection node;

sending a information for radio link updating from the radio link connection node to a control center if the state of the radio link has changed; and

updating a radio link parameter at the control center based on the information.

21. The method of claim 20, wherein the control center is a radio network controller (RNC).

22. The method of claim 21, wherein the RNC is a serving RNC.

23. The method of claim 20, wherein the radio link connection node is a node B.

24. The method of claim,20i,,wherein the information is a high speed downlink packet access (HSDPA) related parameter value.

25. The method of claim 20, wherein the information is delivered through a radio link parameter update request message.

26. The method of claim 25, wherein the RL parameter update request message includes at least one of a channel quality indicator (CQI) feedback cycle, an ACK/NACK repetition factor, a CQI repetition factor, a CQI power offset, an ACK power offset and/or NACK power offset, and an HS-SCCH code change indicator.

27. The method of claim 20, wherein the information is delivered at every regular periods or when a parameter indicative of a state of a radio link exceeds a certain threshold value.

28. The method of claim 27, wherein the period and the threshold value are pre-set values of the radio link connection node.

29. The method of claim 20 further comprising:

delivering a criteria for decision of the parameter updating from the control center to the radio link connection node.

30. The method of claim 29, wherein the decision criteria comprises

a parameter indicative of what parameter is to be measured to detect a change of the radio link;

an event type parameter indicative of whether to perform parameter updating periodically or on the basis of an event; and

a parameter indicative of an actual period for the event type parameter or a threshold value.

31. The method of claim 20 further comprising:

sending new radio link configuration information from the control center to the radio link connection node if the radio link is changed.

32. The method of claim 20, wherein the radio link connection node controls radio link update information to be delivered to the control center according to the radio link configuration information.

33. The method of claim 32, wherein the radio link connection node analyzes the radio link configuration information and delivers the radio link update information to the control center only when the terminal initiates and terminates a handover.

34. The method of claim 32, wherein the radio link connection node analyzes the radio link configuration information of the terminal and delivers the radio link update information to the control center only when there is a change in the number of radio links.

35. The method of claim 20 further comprising:

transmitting the updated parameter and time information from the control center to the terminal.

36. The method of claim 35, wherein the time information is activation time or a connection frame number (CFN) parameter.

37. A radio link parameter updating method for a high speed downlink packet access (HSDPA) system, comprising:

receiving a criteria for decision of the parameter updating from a radio network controller (RNC);

delivering a information for radio link updating from a base station to the RNC if the decision criteria is satisfied; and

updating a radio link parameter in the RNC based on the received radio link update information.

38. The method of claim 37, wherein the RNC is a serving RNC.

39. The method of claim 37, wherein the radio link parameter is a high speed dedicated physical control channel (HS-DPCCH) related parameter.

40. The method of claim 37, wherein the radio link update information is delivered through a radio link (RL) parameter update request message which includes at least one of a channel quality indicator (CQI) feedback cycle, an ACK/NACK repetition factor, a CQI repetition factor, a CQI power offset, an ACK power offset and/or NACK power offset, and an HS-SCCH code change indicator 41

41. The method of claim 37, wherein the decision criteria is a period or a threshold value, and the base station delivers the information at every regular periods or when a parameter indicative of a state of the radio link exceeds a certain threshold value.

42. The method of claim 37 further comprising:

transmitting the updated radio link parameter to the terminal.

43. The method of claim 37 further comprising:

delivering new radio link configuration information from the RNC to the base station through an RL configuration information message if the radio link changes.

44. The method of claim 43, wherein the base station controls the radio link update information to be delivered to the RNC according to the new radio link configuration information.

45. A radio link parameter updating method for a high speed downlink packet access (HSDPA) system, comprising:

detecting a radio channel state;

receiving a parameter update criteria and a radio link configuration information from a radio network controller (RNC);

sending a radio link update information to the RNC according to a radio channel state and the radio link configuration information if the parameter update criteria is satisfied; and

updating a radio link parameter in the RNC according to the radio link update information.

46. The method of claim 45, wherein the RNC is a serving RNC.

47. The method of claim 45, wherein the radio link parameter is a high speed dedicated physical control channel (HS-DPCCH) related parameter.

48. The method of claim 45, wherein the radio link update information is delivered through a radio link (RL) parameter update request message which includes at least one of a channel quality indicator (CQI) feedback cycle, an ACK/NACK repetition factor, a CQI repetition factor, a CQI power offset, an ACK power offset and/or NACK power offset, and an HS-SCCH code change indicator.

49. The method of claim 45, wherein the radio link update criteria is a period or a threshold value, and the base station sends the radio link update information to the RNC at every regular periods or when a parameter indicative of a state of the radio link exceeds a certain threshold value.

50. The method of claim 45, wherein the base station transmits the radio link update information to the RNC only when the terminal starts and sends a soft handover by using the radio link configuration information.

51. The method of claim 45, wherein the base station sends the radio link update information to the RNC only when there is a change in the number of the radio links of the terminal by using the radio configuration information.

52. The method of claim 45 further comprising:

transmitting the updated parameter and time information from the RNC both to the base station and to the terminal.

53. A radio link (RL) parameter updating method in a high speed downlink packet access (HSDPA) system, comprising:

an RL parameter update procedure which triggers updating of an RL parameter by sending a update information from a base station to a radio network controller (RNC); and

a radio resource control (RRC) procedure which transmits the RL parameter updated in the RNC according to the received update information to a terminal.

54. The method of claim 53, wherein the RNC is a serving RNC.

55. The method of claim 53, wherein the update information is sent through an RL parameter update request message.

56. The method of claim 53, wherein the RL parameter update request message includes at least one of a channel quality indicator (CQI) feedback cycle value, an ACK/NACK repetition factor value, a CQI repetition factor value, a CQI power offset, an ACK power offset and/or NACK power offset value, and an HS-SCCH code change indicator value.

57. The method of claim 53, wherein the RNC sends the updated parameter time information to the base station through an RL parameter update response message.

58. The method of claim 57, wherein the time information is activation time or a connection frame number (CFN) parameter.

59. The method of claim 53, wherein the RNC sends the updated parameter and the time information to the terminal by using one of radio bearer reconfiguration, a transport channel reconfiguration and a physical channel reconfiguration message.

60. The method of claim 53, wherein the RL parameter update procedure is performed at every regular periods or when a parameter indicative of a state of the radio link exceeds a certain threshold value.

61. The method of claim 60, wherein the period and the threshold value are pre-set values in the base station.

62. The method of claim 60, wherein the period and the threshold value are provided from the RNC.

63. The method of claim 53 further comprising:

an RL parameter update initiation procedure which informs a radio link update ctiteria through an RL parameter update initiation request message from the RNC to the base station.

64. The method of claim 63, wherein the RL parameter update initiation request message comprises:

a parameter indicative of what parameter is to be measured to detect a change of the radio link;

an event type parameter indicative of whether to perform parameter updating periodically or on the basis of an event; and

a parameter indicative of an actual period of the event type parameter or a threshold value.

65. The method of claim 53 further comprising:

an RL configuration information procedure which delivers a radio link configuration information of the terminal through an RL configuration information message from the RNC to the base station.

66. The method of claim 65, wherein the RL parameter update procedure is performed by determining whether the terminal is in a soft handover and a change in the number of radio links on the basis of the RL configuration information message.

67. The method of claim 66, wherein the RL parameter update procedure is performed only when the terminal starts or;

terminates the soft handover.

68. The method of claim 66, wherein the RL parameter update procedure is performed only when there is a change in the number of radio links of the terminal.

69. A method comprising:

determining at least one configuration parameter at an antenna station; and

communicating said at least one configuration parameter from the antenna station to a controller, wherein the controller is configured to control the antenna station.

70. The method of claim 69, wherein the configuration parameter is for configuring communication between a mobile station and the antenna station.

71. The method of claim 69, wherein said determining is comprised in at least one of initiating and updating said at least one configuration parameter at at least one of the antenna station and a mobile station.

72. The method of claim 69, wherein the controller is configured to control the antenna station to update said at least one configuration parameter.

73. The method of claim 69, wherein said at least one configuration parameter is a high speed downlink packet access related parameter.

74. The method of claim 73, wherein said high speed downlink packet access related parameter is a HSDPA related parameter.

75. The method/of claim 69, wherein the antenna station is a base station.

77. The method of claim 69, wherein the controller is a radio network controller.

78. The method of claim 77, wherein the radio network controller comprises a control radio network controller.

79. The method of claim 77, wherein the radio network controller comprises a serving radio network controller.

80. The method of claim 77, wherein the radio network controller comprises a drift radio network controller.

81. The method of claim 69, wherein said at least one configuration parameter comprises a channel quality indicator feedback cycle value.

82. The method of claim 69, wherein said at least one configuration parameter comprises an ACK/NACK repetition factor value.

83. The method of claim 69, wherein said at least one configuration parameter comprises a channel quality indicator repetition factor value.

84. The method of claim 69, wherein said at least one configuration parameter comprises a channel quality indicator power offset.

85. The method of claim 69, wherein said at least one configuration parameter comprises an ACK power offset.

86. The method of claim 69, wherein said at least one configuration parameter comprises a NACK power offset value.

87. The method of claim 70, wherein said at least one configuration parameter comprises a HS-SCCH code change indicator value.

88. The method of claim 69, comprising:

from the controller, controlling a mobile station to be configured according to the at least one configuration parameter; and

from the controller, controlling the antenna station, to be configured according to the at least one configuration parameter.

89. The method of claim 88, wherein the mobile station is user equipment.

90. The method of claim 89, wherein user equipment is UE.

91. The method of claim 88, wherein said at least one configuration parameter relates to a high speed physical downlink shared channel.

92. The method of claim 91, wherein the high speed physical downlink shared channel is a HS-DSCH.

93. The method of claim 69, comprising communicating quality information from a mobile station to the antenna station prior to said determining the at least one configuration parameter at the antenna station.

94. The method of claim 69, comprising generating quality information, wherein the quality information is a representation of quality of a communication link between a mobile station and the antenna station.

95. The method of claim 94, wherein the quality information is generated at the mobile station.

96. The method of claim 94, wherein the quality information is generated at the antenna station.

97. The method of claim 94, wherein said quality information comprises radio link information.

98. The method of claim 94, wherein said determining the at least one configuration parameter at the antenna station comprises:

analyzing the quality information;

determining whether to reconfigure the radio link between the mobile station and the antenna station according to results of the analyzing the quality information; and

constructing the at least one configuration parameter according to the results of the analyzing the quality information, if it is determine to reconfigure the radio link between the mobile station and the antenna station in said determining whether to reconfigure the radio link.

99. The method of claim 98, wherein the quality information comprises a channel quality indicator.

100. The method of claim 99, wherein the channel quality indicator comprises information determined according to measurement.

101. The method of claim 100, wherein the channel quality indicator is determined according to measurement of a link between the mobile station and the antenna station.

102. The method of claim 101, wherein the link between the mobile station and the antenna station is a L1 link.

103. The method of claim ;

101, wherein the measurement of a link between the mobile station and the antenna station is a measurement of up link radio interference.

104. The method of claim 98, wherein the quality information comprises an acknowledge indicator.

105. The method of claim 104, wherein the acknowledge indicator is ACK.

106. The method of claim 98, wherein the quality information comprises a negative acknowledge indicator.

107. The method of claim 106, wherein the negative acknowledge indicator is NACK.

108. The method of claim 69, wherein the antenna station and the controller are comprised in a third generation partnership project universal mobile telecommunications system radio access network.

109. The method of claim 108, wherein said third generation partnership project universal mobile telecommunications system radio access network is UTRAN.

110. The method of claim 69, wherein said determining and said communicating are triggered by a condition at the antenna station being satisfied.

111. The method of claim 69, wherein said determining and said communicating are triggered by the controller requesting the antenna station to perform said determining and said communicating.

76. The method 75, wherein the base station is a Node B base station.

117. A method, wherein Node B initiates a Radio Link Parameter Update by sending a Radio Link Parameter Update Indication message to a CRNC.

118. The method of claim 117, wherein the message contains at least one suggested value of at least one HS-DSCH related parameter that should be reconfigured on a radio link.

119. The method of claim 118, wherein if Node B needs to update the at least one HS-DSCH related parameter, Node B shall initiate the Radio Link Parameter Update Indication message including at least one of:

FDD—

HS-DSCH FDD Update Information IE; and

TDD—

HS-DSCH TDD Update Information IE.

120. The method of claim 117, wherein if Node B needs to allocate new HS-SCCH Codes, Node B shall initiate the Radio Link Parameter Update Indication message including HS-SCCH Code Change Indicator IE.

121. The method of claim 117, wherein if Node B needs to update at least one of:

a CQI Feedback Cycle k;

CQI Repetition Factor;

ACK-NACK Repetition Factor;

CQI Power Offset;

ACK Power Offset; and

NACK Power Offset, Node B shall initiate the Radio Link Parameter

Update Indication message including at least one of;

a CQI Feedback Cycle k IE;

CQI Repetition Factor IE;

ACK-NACK Repetition Factor IE;

CQI Power Offset IE;

ACK Power Offset IE; and

NACK Power Offset IE.