Method and apparatus for determining the country where a mobile device has acquired service

• US 8,565,765 B2
• Filed: 12/04/2008
• Issued: 10/22/2013
• Est. Priority Date: 10/17/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Anantharaman, Karthik, Hutchison, James A., Gurganus, Bryan, Kanade, Parag Mohan
• Primary Examiner(s): Kasraian, Allahyar
• Application Number:
  US12/328,576
• Publication Number:
  US 20100099406A1
• Time in Patent Office: 1,783 Days
• Field of Search: 455/551, 455/461, 4554321-4353, 455/564, 455/565
• US Class Current: 455/435.2
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 8/183 Processing at user equipment or user record carrier

Abstract

An apparatus and method for identifying a serving country using at least one system specific parameter comprising extracting the at least one system specific parameter from a forward link signal; determining whether the at least one system specific parameter maps to a unique country; and identifying the serving country for a call.

Claims

1. A method for identifying a serving country using at least one system specific parameter comprising:

extracting a first system specific parameter and a second system specific parameter from a forward link signal;

determining that the first system specific parameter does not map to a unique country;

determining, in response to determining that the first system specific parameter does not map to a unique country, that the second system specific parameter in combination with the first system specific parameter does not map to a unique country;

upon detecting a failure in mapping to a unique country, identifying and presenting one or more candidate countries;

receiving a selection of one of the one or more candidate countries; and

identifying the serving country for a call based on the selection.

2. The method of claim 1, wherein the one or more candidate countries is likely to be the serving country.

3. The method of claim 1, wherein receiving a selection at least comprises selecting one of the one or more candidate countries as the serving country.

4. The method of claim 3, further comprising using a dialing prefix based on the identified serving country to initiate the call.

5. The method of claim 4, further comprising acquiring a wireless service for the forward link signal.

6. The method of claim 1, wherein each of the first and second system specific parameter comprises one or more of a system identification number, bandclass information, a network identification number, a local time offset or daylight savings information.

7. The method of claim 1, further comprising:

obtaining at least one of a local time offset (LTM) or daylight savings information (DAYLT); and

wherein identifying the serving country is based at least in part upon at least one of the LTM or the DAYLT.

8. The method of claim 1, further comprising:

obtaining a preprogrammed list of the one or more candidate countries; and

wherein identifying the serving country further comprises selecting one of the one or more candidate countries from the preprogrammed list.

9. The method of claim 1, further comprising:

obtaining a user input that defines at least one of the one or more candidate countries; and

wherein identifying the serving country is based at least in part upon the user input.

10. A user equipment for identifying a serving country using at least one system specific parameter comprising a processor and circuitry for performing the steps of:

extracting a first system specific parameter and a second system specific parameter from a forward link signal;

determining that the first system specific parameter does not map to a unique country;

determining, in response to determining that the first system specific parameter does not map to a unique country, that the second system specific parameter in combination with the first system specific parameter does not map to a unique country;

upon detecting a failure in mapping to a unique country, identifying and presenting one or more candidate countries;

receiving a selection of one of the one or more candidate countries; and

identifying the serving country for a call based on the selection.

11. The user equipment of claim 10, wherein the one or more candidate countries is likely to be the serving country.

12. The user equipment of claim 10, wherein receiving a selection at least comprises selecting one of the one or more candidate countries as the serving country.

13. The user equipment of claim 12, wherein the processor and circuitry use a dialing prefix based on the identified serving country to initiate the call.

14. The user equipment of claim 13, wherein the processor and circuitry acquire a wireless service for the forward link signal.

15. The user equipment of claim 10, wherein each of the first and second system specific parameter comprises one or more of a system identification number, bandclass information, a network identification number, a local time offset or daylight savings information.

16. The user equipment of claim 10, wherein the user equipment is a mobile phone.

17. The user equipment of claim 10, wherein the processor and circuitry further perform obtaining at least one of a local time offset (LTM) or daylight savings information (DAYLT), and wherein identifying the serving country is based at least in part upon at least one of the LTM or the DAYLT.

18. The user equipment of claim 10, wherein the processor and circuitry further perform obtaining a preprogrammed list of the one or more candidate countries, and wherein identifying the serving country further comprises selecting one of the one or more candidate countries from the preprogrammed list.

19. The user equipment of claim 10, wherein the processor and circuitry further perform obtaining a user input that defines at least one of the one or more candidate countries, and wherein identifying the serving country is based at least in part upon the user input.

20. A wireless device for identifying a serving country using at least one system specific parameter comprising:

means for a first system specific parameter and a second system specific parameter from a forward link signal;

means for determining that the first system specific parameter does not map to a unique country;

means for determining, in response to determining that the first system specific parameter does not map to a unique country, that the second system specific parameter in combination with the first system specific parameter does not map to a unique country;

upon detecting a failure in mapping to a unique country, means for identifying and presenting one or more candidate countries;

means for receiving a selection of one of the one or more candidate countries; and

means for identifying the serving country for a call based on the selection.

21. The wireless device of claim 20, wherein the one or more candidate countries is likely to be the serving country.

22. The wireless device of claim 21, wherein the means for receiving a selection at least includes means for selecting one of the one or more candidate countries as the serving country.

23. The wireless device of claim 22, further comprising means for using a dialing prefix based on the identified serving country to initiate the call.

24. The wireless device of claim 20, wherein each of the first and second system specific parameter comprises one or more of a system identification number, bandclass information, a network identification number, a local time offset or daylight savings information.

25. A program recorded on a non-transitory computer-readable medium and executable by a computer, comprising:

program code for extracting a first system specific parameter and a second system specific parameter from a forward link signal;

program code for determining that the first system specific parameter does not map to a unique country;

program code for determining, in response to determining that the first system specific parameter does not map to a unique country, that the second system specific parameter in combination with the first system specific parameter does not map to a unique country;

upon detecting a failure in mapping to a unique country, program code for identifying and presenting one or more candidate countries;

program code for receiving a selection of one of the one or more candidate countries; and

program code for identifying the serving country for a call comprising selecting one of the one or more candidate countries as the serving country based on the selection.