Preferred roaming list and roaming indicator provision and synchronization

• US 20040198350A1
• Filed: 10/10/2002
• Published: 10/07/2004
• Est. Priority Date: 10/10/2002
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Aerrabotu, Naveen
• Granted Patent: US 7,155,219 B2
• Time in Patent Office: Days
• US Class Current: 455/432.1
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

A method for synchronizing multiple database that are provided at different times is provided. As a wireless communication device (102) leaves a first region (104) and enters a second region (108), it is provided with a new preferred roaming list information (204) which may no longer be synchronized with a stored functionality extension table. Based upon information included in the new preferred roaming list information, an appropriate functionality extension table (214) that is synchronized to the new preferred roaming list is received.

Claims

1. A method in a wireless communication device, comprising:

receiving preferred roaming list information;

determining whether the preferred roaming list information includes functionality extension table reference information;

requesting functionality extension table information if the preferred roaming list information includes functionality extension table reference information.

2. The method of claim 1, receiving the functionality extension table information in response to the request, the functionality extension table information received synchronized with the preferred roaming list information.

3. The method of claim 2, updating any functionality extension table information stored previously on the wireless communication device with the functionality extension table information received in response to the request.

4. The method of claim 3, requesting call prompt table information if the preferred roaming list includes call prompt table reference information.

5. The method of claim 4, receiving the call prompt table information in response to the request, the call prompt table information received synchronized with the preferred roaming list information.

6. The method of claim 3, requesting call prompt table information if the functionality extension table includes call prompt table reference information.

7. The method of claim 6, receiving the call prompt table information in response to the request, the call prompt table information received synchronized with the functionality extension table.

8. The method of claim 1, deleting any previously stored functionality extension table information on the wireless communication device if the preferred roaming list information does not include functionality extension table reference information.

9. A method in a wireless communication device, comprising:

receiving functionality extension table information from the network;

synchronizing the functionality extension table information with preferred roaming list information by requesting preferred roaming list information corresponding to the functionality extension table information received from the network;

receiving preferred roaming list information referencing the functionality extension table information in response to the request.

10. A method in a wireless communication network, comprising:

maintaining an information base correlating compatible versions of wireless communications device functionality extension table information and corresponding wireless communication device preferred roaming list information,

the preferred roaming list information including references to the functionality extension table information;

sending the functionality extension table information to a wireless communication device;

sending the corresponding preferred roaming list information to the wireless communication device.

11. The method of claim 10, sending the functionality extension table information to the wireless communication device in response to a request from the wireless communication device.

12. The method of claim 11, sending the functionality extension table information to the wireless communication device after sending the corresponding preferred roaming list information.

13. The method of claim 10, sending the preferred roaming list information to the wireless communication device in response to a request from the wireless communication device.

14. The method of claim 13, sending the preferred roaming list information to the wireless communication device after sending the corresponding functionality extension table information.

15. A method in a radiotelephone for synchronizing a preferred roaming list with a roaming indicator table, the preferred roaming list having a list version number, comprising:

receiving the preferred roaming list;

transmitting the list version number and a request to receive the roaming indicator table corresponding to the list version number; and

receiving the roaming indicator table corresponding to the list version number, the roaming indicator table synchronized to the preferred roaming list.

16. A method in a radiotelephone for synchronizing a preferred roaming list with a roaming indicator table, the preferred roaming list having a roaming indicator field and a list version number, comprising:

receiving the preferred roaming list;

determining if the roaming indicator field meets a predetermined condition;

transmitting the list version number and a request to receive the roaming indicator table corresponding to the list version number if the predetermined condition is met; and

receiving the roaming indicator table corresponding to the list version number, the roaming indicator table synchronized to the preferred roaming list.

17. A method in a radiotelephone for synchronizing a roaming indicator table with a preferred roaming list with the roaming indicator table having a table version number, comprising:

receiving the roaming indicator table;

transmitting the table version number and a request to receive the preferred roaming list corresponding to the table version number; and

receiving the preferred roaming list corresponding to the table version number, the preferred roaming list synchronized to the roaming indicator table.

18. A method in a radiotelephone network for providing a preferred roaming list and a roaming indicator table, comprising:

maintaining a plurality of preferred roaming lists and roaming indicator tables;

maintaining a listing of a plurality of compatible preferred roaming list and roaming indicator table pairs;

transmitting a first preferred roaming list of the plurality of preferred roaming lists having a first list version number;

receiving the first list version number of the first preferred roaming list and a request to transmit a first roaming indicator table of the plurality of roaming indicator tables;

selecting the first roaming indicator table based upon the first list version number and the listing of compatible preferred roaming list and roaming indicator table pairs; and

transmitting the first roaming indicator table, the first roaming indicator table synchronized to the first preferred roaming list.

19. A method in a radiotelephone for replacing a first preferred roaming list and a first roaming indicator table, comprising:

receiving a second preferred roaming list having a second list version number;

replacing the first preferred roaming list with the second preferred roaming list;

transmitting the second list version number and a request to receive a second roaming indicator table corresponding to the second list version number;

receiving the second roaming indicator table corresponding to the second list version number, the second roaming indicator table synchronized to the second preferred roaming list; and

replacing the first roaming indicator table with the second roaming indicator table.