METHODS AND APPARATUS FOR OPTIMIZATION OF SIM CARD INITIALIZATION

• US 20140057679A1
• Filed: 05/14/2013
• Published: 02/27/2014
• Est. Priority Date: 08/24/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Berionne, Michele, Ruvalcaba, Jose Alfredo
• Granted Patent: US 10,462,646 B2
• Time in Patent Office: Days
• US Class Current: 455/558
• CPC Class Codes: H04W 8/183 Processing at user equipment or user record carrier
• CPC Class Codes: H04W 8/205 Transfer to or from user equipment or user record carrier

Abstract

Methods and apparatus for initializing a SIM card may include sending a request to read a file from the SIM card. In addition, the methods and apparatus may include receiving a SIM version identifier for the file from the SIM card and determining whether the SIM version identifier matches a cached version identified in a cache. When the SIM version identifier matches the cached version identifier, the methods and apparatus may include accessing the file from the cache.

Claims

1. A method for initializing a subscriber identity module (SIM) card, the method comprising:

sending a request to read a file from the SIM card;

receiving a SIM version identifier for the file from the SIM card;

determining whether the SIM version identifier matches a cached version identifier in a cache; and

accessing the file from the cache when the SIM version identifier matches the cached version identifier.

2. The method of claim 1, further comprising:

accessing the file from the SIM card when the SIM version identifier does not match the cached version identifier.

3. The method of claim 1, wherein the request is sent upon at least one or more of a power up of a wireless device, inserting the SIM card into a wireless device, and leaving an airplane mode of the wireless device.

4. The method of claim 1, further comprising:

sending an update request to update the file on the SIM card;

receiving an updated version identifier from the SIM card in response to the update request; and

storing the updated file and version identifier in the cache.

5. The method of claim 4, further comprising:

determining whether a new SIM version identifier was received with the updated file; and

storing the new SIM version identifier with the updated file in the cache when the new SIM version identifier is received with the updated file.

6. The method of claim 5, further comprising:

invalidating the cache when the new SIM version identifier is not received with the updated file.

7. The method of claim 1, wherein the file comprises one of a service provider name, an address books, an application, a SMS message, a preferred roaming list, an international mobile subscriber identity (IMSI), a temporary identity, network parameters, and femto cell identifiers.

8. At least one processor configured to initialize a subscriber identity module (SIM) card, the processor comprising:

a first module for sending a request to read a file from the SIM card;

a second module for receiving a SIM version identifier for the file from the SIM card;

a third module for determining whether the SIM version identifier matches a cached version identifier in a cache; and

a fourth module for accessing the file from the cache when the SIM version identifier matches the cached version identifier.

9. A computer program product, comprising:

a computer-readable medium comprising;

a first set of codes for causing a computer to send a request to read a file from a subscriber identity module (SIM) card;

a second set of codes for causing the computer to receive a SIM version identifier for the file from the SIM card;

a third set of codes for causing the computer to determine whether the SIM version identifier matches a cached version identifier in a cache; and

a fourth set of codes for causing the computer to access the file from the cache when the SIM version identifier matches the cached version identifier.

10. An apparatus, comprising:

means for sending a request to read a file from a subscriber identity module (SIM) card;

means for receiving a SIM version identifier for the file from the SIM card;

means for determining whether the SIM version identifier matches a cached version identifier in a cache; and

means for accessing the file from the cache when the SIM version identifier matches the cached version identifier.

11. An apparatus, comprising:

a read component operable to send a request to read a file from a subscriber identity module (SIM) card and receive a version identifier for the file from the SIM card;

a verification component operable to determine whether the SIM version identifier matches a cached version identifier in a cache; and

the read component being further operable to access the file from the cache when the SIM version identifier matches the cached version identifier.

12. The apparatus of claim 11, wherein the read component is further operable to access the file from the SIM card when the SIM version identifier does not match the cached version identifier.

13. The apparatus of claim 11, wherein the request is sent upon at least one or more of a power up of a wireless device, inserting the SIM card into a wireless device, and leaving an airplane mode of the wireless device.

14. The apparatus of claim 11, further comprising:

an update component operable to send an update request to update the file on the SIM card and receive an updated version identifier from the SIM card after the update request,

wherein the cache is further operable to store the updated file.

15. The apparatus of claim 14, wherein the update component is further operable to determine whether a new SIM version identifier was received with the updated file, and

wherein the cache is further operable to store the new SIM version identifier with the updated file when the new SIM version identifier is received with the updated file.

16. The apparatus of claim 15, wherein the verification component is further operable to invalidate the cache when the new SIM version identifier is not received with the updated file.

17. The apparatus of claim 11, wherein the file comprises one of a service provider name, an address books, an application, a SMS message, a preferred roaming list, an international mobile subscriber identity (IMSI), a temporary identity, network parameters, and femto cell identifiers.