Radio link parameter updating method in mobile communication system

• US 7,822,044 B2
• Filed: 04/04/2003
• Issued: 10/26/2010
• Est. Priority Date: 04/06/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young-Dae, Park, Jin-Young, Kim, Eun-Jung
• Primary Examiner(s): Jain; Raj
• Application Number:
  US10/406,581
• Publication Number:
  US 20040009767A1
• Time in Patent Office: 2,762 Days
• Field of Search: 370/468, 370/477, 370/331, 370/310, 370/328, 370/332, 370/333, 370/352, 370/353, 370/354, 370/355, 370/356, 370/310.2, 370/311, 370/329, 370/347, 370/349, 370/335, 370/400, 370/474, 370/392, 370/522, 455/67.13, 455/436, 455/437, 455/69, 455/434, 455/438, 455/439, 455/522, 455/466
• US Class Current: 370/400
• 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.

Claims

1. A method of updating a radio link parameter for a radio communications system having a network controller and a base station connected with the network controller, the method comprising:

sending radio link parameter information through a message from the base station to the network controller to initiate update of the radio link parameter, wherein the radio link parameter information includes a channel quality indicator (CQI) feedback cycle information and a CQI repetition factor information,

wherein the radio link parameter is a high speed downlink packet access (HSDPA) related parameter for High Speed-Downlink Shared Channel (HS-DSCH), and the base station includes a Medium Access Control-high speed (MAC-hs) sub-layer, which manages a HS-DSCH, wherein the HS-DSCH is a transport channel and is mapped to a High Speed-Physical Downlink Shared Channel (HS-PDSCH),

wherein the radio link parameter further relates to an High Speed-Dedicated Physical Control Channel (HS-DPCCH) for transmitting an uplink feedback signaling related to the HS-DSCH, and

wherein the HS-DPCCH is constructed with a radio frame with a period of 10 ms, each radio frame consists of five sub-frames of 2 ms, and one sub-frame consists of three slots.

2. The method of claim 1, wherein the radio link parameter information is a parameter value.

3. The method of claim 1, wherein the base station initiates the update of the radio link parameter when a radio channel state of a user terminal is changed.

4. The method of claim 1, wherein the base station initiates the update of the radio link parameter at every regular periods or when the radio link parameter exceeds a certain threshold value.

5. The method of claim 4, wherein the period and the threshold value are set within the base station.

6. The method of claim 4, wherein the period and the threshold value are provided from the network controller.

7. The method of claim 1, wherein the base station controls the radio link parameter information according to radio link configuration information of a user terminal.

8. The method of claim 7, wherein the radio link configuration information is sent from the network controller.

9. The method of claim 7, wherein the base station analyzes the radio link configuration information and initiates the update of the radio link parameter only when the user terminal initiates and terminates a handover.

10. The method of claim 7, wherein the base station needs to update the radio link parameter when the number of radio links of the user terminal changes.

11. The method of claim 1, wherein the base station has a hybrid automatic repeat request (HARQ) function.

12. The method of claim 1, further comprising:

transmitting the radio link parameter information updated at the network controller and time information to a user terminal.

13. The method of claim 12, wherein the time information is an activation time.

14. The method of claim 13, wherein the activation time including a connection frame number (CFN) value.

15. The method of claim 1, wherein the network controller is a controlling RNC.

16. The method of claim 1, wherein the radio link parameter information further comprises an ACK/HACK repetition factor information.

17. The method of claim 1, wherein the radio link parameter information further comprises at least one of a CQI power offset information, an ACK power offset information, a NACK power offset information, or HS-SCCH code change indicator information.

18. The method of claim 1, wherein the uplink feedback signaling comprises a Hybrid-ARQ Acknowledgement (HARQ-ACK) and a Channel Quality Indication (CQI).

19. The method of claim 18, wherein the HARQ-ACK is transmitted at a first slot of the HS-DPCCH sub-frame and the CQI is transmitted at second and third slots of the HS-DPCCH sub-frame.

20. The method of claim 1, wherein the HS-DPCCH is relative to an uplink Dedicated Physical Control Channel (DPCCH).

21. The method of claim 1, wherein the update of the radio link parameter is finally determined by the network controller.

22. The method of claim 1, wherein the method of updating the radio link parameter is initiated by the base station.

35. The method of claim 12, wherein the method of updating the radio link parameter information is initiated by the base station.

23. A method of updating radio link parameter information for a radio communications system having at least one network controller, at least one base station connected with the network controller, and at least one user terminal in communication with the base station, the method of updating radio link parameter information comprising:

receiving at the user terminal a high-speed downlink packet access related radio link parameter information from the network controller;

performing at the user terminal a parameter configuration by using the received high-speed downlink packet access (HSDPA) related radio link parameter information from the network controller for High Speed-Downlink Shared Channel (HS-DSCH), which was previously delivered through a message from the base station to the network controller, wherein the high-speed downlink packet access related radio link parameter information comprises a channel quality indicator (CQI) feedback cycle information and a CQI repetition factor information, and the base station includes a Medium Access Control-high speed (MAC-hs) sub-layer, which manages a HS-DSCH, wherein the HS-DSCH is a transport channel and is mapped to a High Speed-Physical Downlink Shared Channel (HS-PDSCH),

wherein the radio link parameter information relates to an High Speed-Dedicated Physical Control Channel (HS-DPCCH) for transmitting an uplink feedback signaling related to the HS-DSCH, and

wherein the HS-DPCCH is constructed with a radio frame with a period of 10 ms, each radio frame consists of five sub-frames of 2 ms, and one sub-frame consists of three slots.

24. The method of claim 23, the radio link parameter information is a radio link parameter value.

25. The method of claim 23, wherein the high-speed downlink packet access related radio link parameter information is received via a Radio Resource Control signaling.

26. The method of claim 25, wherein the Radio Resource Control signaling uses at least one of a radio bearer reconfiguration, a transport channel reconfiguration, and a physical channel reconfiguration message.

27. The method of claim 23, wherein the receiving step is performed after a radio link parameter update procedure was initiated by the base station.

28. The method of claim 27, further comprising:

sending the message from the base station to the network controller to configure at least one high-speed downlink packet access related radio link parameter of the base station according to the initiated radio link parameter update procedure.

29. The method of claim 23, wherein the radio link parameter information further comprises an ACK/NACK repetition factor information.

30. The method of claim 23, wherein the radio link parameter information further comprises at least one of a CQI power offset information, an ACK power offset information, a NACK power offset information, or HS-SCCH code change indicator information.

31. The method of claim 23, wherein the uplink feedback signaling comprises a Hybrid-ARQ Acknowledgement (HARQ-ACK) and a Channel Quality Indication (CQI).

32. The method of claim 31, wherein the HARQ-ACK is transmitted at a first slot of the HS-DPCCH sub-frame and the CQI is transmitted at second and third slot of the HS-DPCCH sub-frame.

33. The method of claim 23, wherein the HS-DPCCH is relative to an uplink Dedicated Physical Control Channel (DPCCH).

34. The method of claim 23, wherein the update of the radio link parameter is finally determined by the network controller.

36. A method of updating a radio link parameter for a radio communications system having a network controller and a base station connected with the network controller, the network controller performing the method comprising:

receiving radio link parameter information to initiate update of the radio link parameter through a message from the base station to the network controller when the base station needs to update the radio link parameter, wherein the radio link parameter information includes a channel quality indicator (CQI) feedback cycle information and a CQI repetition factor information,

wherein the radio link parameter is a high speed downlink packet access (HSDPA) related parameter for High Speed-Downlink Shared Channel (HS-DSCH), and the base station includes a Medium Access Control-high speed (MAC-hs) sub-layer, which manages a HS-DSCH, wherein the HS-DSCH is a transport channel and is mapped to a High Speed-Physical Downlink Shared Channel (HS-PDSCH),

wherein the radio link parameter information relates to an High Speed-Dedicated Physical Control Channel (HS-DPCCH) for transmitting an uplink feedback signaling related to the HS-DSCH, and

wherein the HS-DPCCH is constructed with a radio frame with a period of 10 ms, each radio frame consists of five sub-frames of 2 ms, and one sub-frame consists of three slots.

37. The method of claim 36, the radio link parameter information is a parameter value.

38. The method of claim 36, wherein the base station needs to update the radio link parameter when a radio channel state of a user terminal is changed.

39. The method of claim 36, wherein the base station needs to update the radio link parameter at every regular periods or when the radio link parameter exceeds a certain threshold value.

40. The method of claim 39, wherein the period and the threshold value are set within the base station.

41. The method of claim 39, wherein the period and the threshold value are provided from the network controller.

42. The method of claim 36, wherein the base station has a hybrid automatic repeat request (HARQ) function.

43. The method of claim 36, wherein the network controller is a controlling RNC.

44. The method of claim 36, wherein the radio link parameter information further comprises an ACK/NACK repetition factor information.

45. The method of claim 36, wherein the radio link parameter information further comprises at least one of a CQI power offset information, an ACK power offset information, a NACK power offset information, or HS-SCCH code change indicator information.

46. The method of claim 36, wherein the uplink feedback signaling comprises a Hybrid-ARQ Acknowledgement (HARQ-ACK) and a Channel Quality Indication (CQI).

47. The method of claim 46, wherein the HARQ-ACK is transmitted at a first slot of the HS-DPCCH sub-frame and the CQI is transmitted at second and third slots of the HS-DPCCH sub-frame.

48. The method of claim 36, wherein the HS-DPCCH is relative to an uplink Dedicated Physical Control Channel (DPCCH).

49. The method of claim 36, wherein the update of the radio link parameter is finally determined by the network controller.

50. The method of claim 36, wherein the method of updating the radio link parameter is initiated by the base station.