Radio link parameter updating method in mobile communication system

• US 8,102,862 B2
• Filed: 11/12/2008
• Issued: 01/24/2012
• 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:
  US12/269,224
• Publication Number:
  US 20090093243A1
• Time in Patent Office: 1,168 Days
• Field of Search: 370/468, 370/477, 370/331, 370/310, 370/310.2, 370/311, 370/328, 370/332, 370/333, 370/352, 370/353, 370/354, 370/355, 370/356, 370/329, 370/347, 370/349, 370/335, 370/400, 370/474, 370/392, 370/522, 370/208, 370/209, 370/312, 370/342, 370/465, 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:

when the base station needs to update the radio link parameter,

sending parameter information to initiate update of the radio link parameter through a message between the base station and the network controller,

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 parameter information is related to a High Speed-Dedicated Physical Control Channel (HS-DPCCH), and

wherein the parameter information includes at least one of a channel quality indicator (CQI) feedback cycle information, and a CQI repetition factor information, and

wherein the message is sent to the network controller from the base station.

2. The method of claim 1, wherein the parameter information further comprises an ACK/NACK repetition factor information.

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

4. The method of claim 1, wherein the HS-DPCCH uses a 2 ms sub-frame.

5. The method of claim 1, wherein the 2 ms sub-frame includes 3 slots.

6. The method of claim 1, the parameter information is a parameter value.

7. 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.

8. 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.

9. The method of claim 8, wherein the period and the threshold value are set within the base station.

10. The method of claim 8, wherein the period and the threshold value are provided from the network controller.

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

12. The method of claim 11, wherein the radio link configuration information is sent from the network controller.

13. The method of claim 11, 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.

14. The method of claim 11, wherein the base station needs to update the radio link parameter only when the number of radio links of the user terminal changes.

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

16. The method of claim 1 further comprising:

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

17. The method of claim 16, wherein the time information is an activation time.

18. The method of claim 17, wherein the activation time including a connection frame number (CFN) value.

19. The method of claim 1, wherein the network controller is a controlling radio network controller (CRNC).

20. A method of processing 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 user terminal performing the method comprising:

receiving high-speed downlink packet access related radio link parameter information from the network controller; and

performing parameter configuration by using the received high-speed downlink packet access (HSDPA) related radio link parameter information for High Speed-Downlink Shared Channel (HS-DSCH), which was previously delivered from the base station to the network controller through a message between the base station and the network controller, 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 parameter information is related to a High Speed-Dedicated Physical Control Channel (HS-DPCCH), and

wherein the parameter information includes at least one of a channel quality indicator (CQI) feedback cycle information, and a CQI repetition factor information.

21. The method of claim 20, wherein the parameter information further comprises an ACK/NACK repetition factor information.

22. The method of claim 20, wherein the parameter information further comprises at least one of a CQI power offset information, an ACK power offset information, a NACK power offset information, and HS-SCCH code change indicator information.

23. The method of claim 20, wherein the HS-DPCCH uses a 2 ms sub-frame.

24. The method of claim 23, wherein the 2 ms sub-frame includes 3 slots.

25. The method of claim 20, 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 20, 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. 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 parameter information to update of the radio link parameter through a message between the base station and the network controller when the base station needs to update the radio link parameter,

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 parameter information is related to a High Speed-Dedicated Physical Control Channel (HS-DPCCH),

wherein the parameter information includes at least one of a channel quality indicator (CQI) feedback cycle information, and a CQI repetition factor information, and

wherein the message is received by the network controller from the base station.

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

31. The method of claim 29, wherein the parameter information further comprises at least one of a CQI power offset information, an ACK power offset information, a NACK power offset information, and HS-SCCH code change indicator information.

32. The method of claim 29, wherein the HS-DPCCH uses a 2 ms sub-frame.

33. The method of claim 32, wherein the 2 ms sub-frame includes 3 slots.

34. The method of claim 29, the parameter information is a parameter value.

35. The method of claim 29, wherein the base station needs to update the radio link parameter when a radio channel state of a user terminal is changed.

36. The method of claim 29, 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.

37. The method of claim 36, wherein the period and the threshold value are set within the base station.

38. The method of claim 36, wherein the period and the threshold value are provided from the network controller.

39. The method of claim 29, wherein the base station has a hybrid automatic repeat request (HARQ) function.

40. The method of claim 29, wherein the network controller is a controlling radio network controller (CRNC).