Method and system for selecting a prefer red cell in a wireless communication system

• US 20020111166A1
• Filed: 02/12/2001
• Published: 08/15/2002
• Est. Priority Date: 02/12/2001
• Status: Abandoned Application

• Current Assignee: Siemens Information And Communication Mobile LLC (Siemens AG)
• Original Assignee: Opuswave Networks, Inc.
• Inventors: Monroe, Robert L.
• Application Number:
  US09/782,100
• Publication Number:
  US 20020111166A1
• Time in Patent Office: Days
• US Class Current: 455/435.3
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 56/00 Synchronisation arrangements

Abstract

A method for selecting a preferred cell in a wireless communication system is provided that includes broadcasting cell reselection parameters from the preferred cell. The cell reselection parameters include a cell reselection offset and a timer parameter. The cell reselection offset and the timer parameter comprise values such that a cell reselection criterion for the preferred cell is greater than cell reselection criteria for non-preferred cells. A location update request is received from a mobile device. A determination is made regarding whether the mobile device is authorized. The location update from the mobile device is accepted when the mobile device is authorized.

Claims

1. A method for selecting a preferred cell in a wireless communication system, comprising:

broadcasting cell reselection parameters from the preferred cell, the cell reselection parameters comprising a cell reselection offset and a timer parameter, the cell reselection offset and the timer parameter comprising values such that a cell reselection criterion for the preferred cell is greater than cell reselection criteria for non-preferred cells;

receiving a location update request from a mobile device;

determining whether the mobile device is authorized; and

accepting the location update from the mobile device when the mobile device is authorized.

2. The method of claim 1, further comprising sending an acceptance response to the mobile device when the location update is accepted, the acceptance response comprising a private network indicator.

3. The method of claim 2, the private network indicator comprising a textual identifier for the private network.

4. The method of claim 1, the timer parameter comprising one of a temporary offset of 0 dB and a penalty time of 0 seconds.

5. The method of claim 1, further comprising rejecting the location update from the mobile device when the mobile device is unauthorized.

6. The method of claim 5, rejecting the location update comprising providing a cause code to the mobile device, the cause code indicating that the location area comprising the preferred cell is forbidden for roaming.

7. The method of claim 1, the cell reselection offset comprising a maximum value and the temporary offset comprising a minimum value.

8. The method of claim 1, the cell reselection offset comprising 126 dB.

9. The method of claim 1, further comprising broadcasting a cell reselection parameter indicator from the preferred cell to indicate the presence of cell reselection parameters.

10. A system for selecting a preferred cell in a wireless communication system, comprising:

a computer-processable medium; and

logic stored on the computer-processable medium, the logic operable to broadcast cell reselection parameters from the preferred cell, the cell reselection parameters comprising a cell reselection offset and a timer parameter, the cell reselection offset and the timer parameter comprising values such that a cell reselection criterion for the preferred cell is greater than cell reselection criteria for non-preferred cells;

to receive a location update request from a mobile device;

to determining whether the mobile device is authorized; and

to accept the location update from the mobile device when the mobile device is authorized.

11. The system of claim 10, the logic further operable to send an acceptance response to the mobile device when the location update is accepted, the acceptance response comprising a private network indicator.

12. The system of claim 11, the private network indicator comprising a textual identifier for the private network.

13. The system of claim 11, the timer parameter comprising one of a temporary offset of 0 dB and a penalty time of 0 seconds.

14. The system of claim 10, the logic further operable to reject the location update from the mobile device when the mobile device is unauthorized.

15. The system of claim 14, the logic operable to reject the location update by providing a cause code to the mobile device, the cause code indicating that the location area comprising the preferred cell is forbidden for roaming.

16. The system of claim 10, the cell reselection offset comprising a maximum value and the temporary offset comprising a minimum value.

17. The system of claim 10, the cell reselection offset comprising 126 dB.

18. The system of claim 10, the logic further operable to broadcast a cell reselection parameter indicator from the preferred cell to indicate the presence of cell reselection parameters.

20. The method of claim 19, further comprising receiving an acceptance response from the preferred cell when the location update is accepted, the acceptance response comprising a private network indicator.

21. The method of claim 20, further comprising displaying the private network indicator, the private network indicator comprising a textual identifier for the private network.

22. The method of claim 20, the timer parameter comprising one of a temporary offset of 0 dB and a penalty time of 0 seconds.

23. The method of claim 19, further comprising receiving a rejection response from the preferred cell when the location update is rejected.

24. The method of claim 23, the rejection response comprising a cause code indicating that the location area comprising the preferred cell is forbidden for roaming.

25. The method of claim 19, the cell reselection offset comprising a maximum value and the temporary offset comprising a minimum value.

26. The method of claim 19, the cell reselection offset comprising 126 dB.

27. The method of claim 19, further comprising receiving a cell reselection parameter indicator from the preferred cell, the cell reselection parameter indicator operable to indicate the presence of cell reselection parameters.

19. A method for selecting a preferred cell in a wireless communication system, comprising:

receiving cell reselection parameters from the preferred cell, the cell reselection parameters comprising a cell reselection offset and a timer parameter, the cell reselection offset and the timer parameter comprising values such that a cell reselection criterion for the preferred cell is greater than cell reselection criteria for non-preferred cells; and

requesting a location update based on the cell reselection parameters received from the preferred cell.

28. A method for selecting a preferred cell in a wireless communication system, comprising:

broadcasting cell reselection parameters from the preferred cell, the cell reselection parameters comprising a cell reselection offset and a timer parameter, the cell reselection offset and the timer parameter comprising values such that a cell reselection criterion for the preferred cell is greater than cell reselection criteria for non-preferred cells, the cell reselection offset comprising a maximum value and the timer parameter comprising a minimum value;

receiving a location update request from a mobile device;

determining whether the mobile device is authorized;

accepting the location update from the mobile device when the mobile device is authorized;

sending an acceptance response to the mobile device when the location update is accepted, the acceptance response comprising a private network indicator, the private network indicator comprising a textual identifier for the private network; and

rejecting the location update from the mobile device when the mobile device is unauthorized by providing a cause code to the mobile device, the cause code indicating that the location area comprising the preferred cell is forbidden for roaming.