Method for Control of Radio Measurements in a Cellular Mobile Radio Communication System

• US 20080220766A1
• Filed: 03/21/2006
• Published: 09/11/2008
• Est. Priority Date: 03/25/2005
• Status: Abandoned Application

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Bourdeaut, Stanislas, Bertho, Ghislaine
• Application Number:
  US11/909,615
• Publication Number:
  US 20080220766A1
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: H04W 36/0085 Hand-off measurements

Abstract

One aspect of the present invention is a method for radio measurement control in a cellular mobile radio communication system, for a mobile station in connected mode and in a mobility management state in which the mobile station effects cell reselection, said method including the steps of:

• • reception (1) by the mobile station of a dedicated radio measurement control message including radio measurement control information including measurement type control information, said measurement type being chosen in a group including intra-frequency measurements, inter-frequency measurements, inter-RAT (radio access technology) measurements,
  • configuration (2) of the mobile station for the execution of radio measurements in accordance with the radio measurement control information received in said message,
  • execution (3) of radio measurements by the mobile station in accordance with said configuration.

Claims

1. Method for radio measurement control in a cellular mobile radio communication system, for a mobile station in connected mode and in a mobility management state in which the mobile station effects cell reselection, said method including the steps of:

reception (1) by the mobile station of a dedicated radio measurement control message including radio measurement control information including measurement type control information, said measurement type being chosen in a group including intra-frequency measurements, inter-frequency measurements, inter-RAT (radio access technology) measurements,

configuration (2) of the mobile station for the execution of radio measurements in accordance with the radio measurement control information received in said message,

execution (3) of radio measurements by the mobile station in accordance with said configuration.

2. Method according to claim 1, wherein said mobility management state in which the mobile station effects cell reselection corresponds to the Cell_FACH state as defined in the RRC (Radio Resource Control) protocol for the UMTS system.

3. Method according to claim 1, wherein, said mobility management state in which the mobile station effects cell reselection corresponding to the Cell_PCH or URA_PCH state as defined in the RRC (Radio Resource Control) protocol for the UMTS system, said method includes a preliminary step of transition from the Cell_PCH or URA_PCH state to the Cell_FACH state as defined in the RRC (Radio Resource Control) protocol for the UMTS system.

4. Method according to claim 1, including, for the case of cell reselection and before reception of a dedicated radio measurement control message in the reselected new cell, steps of:

reception (5) by the mobile station of system information containing radio measurement control information,

configuration (6) of the mobile station for the execution of radio measurements in accordance with the radio measurement control information received in said system information,

execution (7) of radio measurements by the mobile station in accordance with that configuration.

5. Method according to claim 1, including, for the case of cell reselection and before reception of a dedicated radio measurement control message in the reselected new cell, steps of:

execution (8) of radio measurements by the mobile station in accordance with a configuration corresponding to control information received in a radio measurement control message received before said cell reselection.

6. Method according to claim 1, wherein, for inter-frequency type measurements, different frequencies correspond to frequencies allocated to different types of cells supporting different types of services or functions.

7. Method according to claim 6, wherein different frequencies are allocated to cells supporting the HSDPA (High Speed Downlink Packet Access) function and to cells not supporting that function.

8. Method according to claim 1, further including a step of:

transmission by the network to said mobile station, in said dedicated radio measurement control message, of measurement occasion control information.

9. Method according to claim 1, further including a step of:

decision by the network to transmit said message to the mobile station, as a function of at least one of a plurality of criteria including the type of services or functions supported by the mobile station and/or by the active cell or cells and/or by one or more cells adjacent to the active cell or cells.

10. Mobile station, including, for radio measurement control in a mobile radio communication system, in connected mode and in a mobility management state in which the mobile station effects cell reselection:

means (10) for receiving a dedicated radio measurement control message,

means (11) for configuring the mobile station for the execution of radio measurements in accordance with radio measurement control information received in said dedicated radio measurement control message,

means (12) for execution of radio measurements in accordance with said configuration.

11. Mobile station according to claim 10, including, for the case of cell reselection and before reception of a dedicated radio measurement control message in the reselected new cell:

means (14) for receiving system information containing radio measurement control information,

means (15) for configuring the mobile station for the execution of radio measurements in accordance with the radio measurement control information received in said system information,

means (16) for execution of the radio measurements in accordance with said configuration.

12. Mobile station according to claim 10, including, for the case of cell reselection and before reception of a dedicated radio measurement control message in the reselected new cell:

means (10, 11, 12) for, before reception of a dedicated radio measurement control message in a reselected new cell, execution of radio measurements in accordance with a configuration corresponding to control information contained in a radio measurement control message received before cell reselection.

13. Mobile radio communication network entity including, for the control of radio measurements in a mobile radio communication system, in connected mode and in a mobility management state in which a mobile station effects cell reselection:

means for transmitting to said mobile station a dedicated radio measurement control message including radio measurement control information including measurement type control information, said measurement type being chosen in a group including intra-frequency measurements, inter-frequency measurements, inter-RAT (radio access technology) measurements, and said information including control information including measurement occasion control information.

14. Mobile radio communication network entity, including, for the control of radio measurements in a mobile radio communication system, in connected mode and in a mobility management state in which a mobile station effects cell reselection:

means for deciding to transmit to said mobile station a dedicated radio measurement control message, as a function of at least one of a plurality of criteria including in particular the type of services or functions supported by the mobile station and/or by the active cell or cells and/or by one or more cells adjacent to the active cell or cells.