METHOD, SYSTEM, AND APPARATUS FOR NETWORK TIME AND DATE DETERMINATION

• US 20110237237A1
• Filed: 03/26/2010
• Published: 09/29/2011
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Palm, Inc. (TCL Technology Group Corp.)
• Inventors: Kashikar, Anand Devidas
• Granted Patent: US 8,437,749 B2
• Time in Patent Office: Days
• US Class Current: 455/419
• CPC Class Codes: G04R 20/06 Decoding time data; Circuits therefor
• CPC Class Codes: H04M 1/72457 according to geographic location
• CPC Class Codes: H04M 2250/10 including a GPS signal receiver

Abstract

A method, system, and apparatus for time and date determination using a wireless network is disclosed. A wireless device searches for a network to establish a connection, and, when a network is found, the wireless device attempts to establish a connection. The wireless device receives a PLMN code from the network. The wireless device receives the current GMT time from a GPS satellite. The wireless device determines the time zone that the wireless device is located in using the PLMN code. The wireless device determines the daylight saving time settings using the PLMN code and/or the GMT time. The wireless device determines the current time and date for the present location of the wireless device using the received GMT time and the determined time zone and day light saving time settings. The wireless device is updated to reflect the current time, date, time zone, and daylight saving settings.

Claims

1. A method for determining time and date on a wireless device, comprising:

receiving a public land mobile network code from a wireless network at the wireless device;

receiving a GMT time from at least one GPS satellite at the wireless device;

determining a time zone applicable to the wireless device using at least one portion of the public land mobile network code;

determining a daylight saving time setting applicable to the wireless device using at least one of the GMT time and the at least one portion of the public land mobile network code;

determining a current time and date of the wireless device using GMT time, the time zone, and the daylight saving time setting; and

updating the wireless device with the current time and date.

2. The method of claim 1, wherein the at least one portion of the public land mobile network code is a mobile country code.

3. The method of claim 1, wherein the at least one portion of the public land mobile network code is a mobile network code.

4. The method of claim 1, wherein the mobile country code and the mobile network code are used to determine at least one of the time zone and the daylight saving time setting.

5. The method of claim 1, wherein the wireless device has a limited service connection to the wireless network.

6. The method of claim 1, wherein the wireless device includes a database storing information including a MCC, a MNC, a GMT time, a time zone, a daylight saving setting, an operator name, and a coding type.

7. The method of claim 1, further comprising updating the wireless device with the GMT time prior to receiving the public land mobile network code.

8. The method of claim 1, wherein the wireless network is at least one of a GSM network and a UMTS network.

9. The method of claim 1, wherein the current time and date is determined within two seconds after turning the wireless device on.

10. A system for determining time and date on a wireless device, comprising:

a wireless network; and

a wireless device;

wherein the wireless device receives a public land mobile network code from the wireless network and a GMT time from at least one GPS satellite;

wherein the wireless device determines a time zone applicable to the wireless device using at least one portion of the public land mobile network code;

wherein the wireless device determines a daylight saving time setting applicable to the wireless device using at least one of the GMT time and the at least one portion of the public land mobile network code;

wherein the wireless device determines a current time and date of the wireless device using GMT time, the time zone, and the daylight saving time setting; and

wherein the wireless device updates a user interface of the wireless device with the current time and date.

11. The system of claim 10, wherein the wireless device has a limited service connection to the wireless network.

12. The system of claim 10, wherein the wireless device includes a database storing information including a MCC, a MNC, a GMT time, a time zone, a daylight saving setting, an operator name, and a coding type.

13. The system of claim 10, wherein the wireless device updates the user interface with the GMT time prior to receiving the public land mobile network code.

14. The system of claim 10, wherein the wireless network is a GSM network.

15. The system of claim 10, wherein the wireless network is a UMTS network.

16. The system of claim 10, wherein the current time and date is determined within five seconds after turning the wireless device on.

17. A wireless device, comprising:

a receiver which receives;

a public land mobile network code from a wireless network; and

a GMT time from at least one GPS satellite;

a processor which determines;

a time zone applicable to the wireless device using at least one portion of the public land mobile network code;

a daylight saving time setting applicable to the wireless device using at least one of the GMT time and the at least one portion of the public land mobile network code; and

a current time and date of the wireless device using GMT time, the time zone, and the daylight saving time setting;

a memory which stores the public land mobile network code, GMT time, the time zone, the daylight saving time setting, and the current time and date; and

a user interface which provides the current time and date to the user.

18. The wireless device of claim 17, wherein the wireless device uses the GMT time to update the user interface prior to receiving the public land mobile network code.

19. The wireless device of claim 18, wherein the wireless device updates the user interface after one minute of searching for the wireless network.

20. The wireless device of claim 19, wherein the wireless device searches for the wireless network after updating the user interface with the GMT time.