Electronic device with frequency band scanning order

• US 9,686,670 B2
• Filed: 12/20/2013
• Issued: 06/20/2017
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Mobile Communications Incorporated (Sony Group Corp.)
• Inventors: Ljung, Rickard
• Primary Examiner(s): Milord, Marceau
• Application Number:
  US14/394,735
• Publication Number:
  US 20160269888A1
• Time in Patent Office: 1,278 Days
• Field of Search: 455434, 4554352, 4554351, 4554353, 4554563, 455515
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 8/08 Mobility data transfer

Abstract

Locally available location data is analyzed to identify a country or region of the world in which an electronic device (10) is most likely being used. From the identified country or region, the electronic device configures a band scan order for a prioritized full band scan of channels supported by the electronic device. As part of the configuration, the electronic device places the frequencies most likely to be used for radio access technology in the identified country or region at the beginning of the band scan order.

Claims

1. An electronic device, comprising:

a radio circuit that establishes wireless communications over a connection with a network, the radio circuit supports communications over plural supported radio frequency bands; and

a control circuit that controls the electronic device to carry out a full band scan by scanning the supported radio frequency bands in a prioritized scan order, the control circuit determines the prioritized scan order for the full band scan by executing logic to;

ascertain a locally-stored location value; and

prioritize the order of the supported radio frequency bands by identifying bands associated with the locally-stored location value from a data structure stored by the electronic device, the associated bands placed at the beginning of the prioritized scan order and other supported radio frequency bands following the associated bands in the prioritized scan order.

2. The electronic device of claim 1, wherein the locally-stored location value is a mobile country code (MCC) obtained from a subscriber identity module (SIM) card of the electronic device.

3. The electronic device of claim 1, wherein the locally-stored location value refers to a region of the world.

4. The electronic device of claim 1, wherein the locally-stored location value refers to a country.

5. The electronic device of claim 1, wherein the control circuit further determines the prioritized scan order for the full band scan by executing logic to include a channel used for a last connection to a network in the beginning of the prioritized scan order.

6. The electronic device of claim 1, wherein the control circuit further executes logic to store the prioritized scan order in a configuration file in a memory of the electronic device.

7. The electronic device of claim 6, wherein the control circuit further executes logic to revise the stored prioritized scan order by moving a channel used to establish network connection following the full band scan up in the prioritized scan order.

8. The electronic device of claim 1, wherein the electronic device further includes a first SIM card storing a first MCC and a second SIM card storing a second MCC, the first MCC having priority over the second MCC, and wherein the logic to prioritize the order of the supported radio frequency bands places bands associated with the first MCC at the beginning of the prioritized scan order, bands associated with the second MCC after the bands associated with the first MCC in the prioritized scan order, and other supported radio frequency bands following the bands associated with the second MCC in the prioritized scan order.

9. A method of establishing wireless communications over a connection with a network in an electronic device, the electronic device including a radio circuit that supports communications over plural supported radio frequency bands, comprising:

creating a prioritized scan order for a full band scan, including;

ascertaining a locally-stored location value; and

prioritizing the order of the supported radio frequency bands by identifying bands associated with the locally-stored location value in a data structure stored by the electronic device, the associated bands placed at the beginning of the prioritized scan order and other supported radio frequency bands following the associated bands in the prioritized scan order; and

carrying out the full band scan by scanning the supported radio frequency bands in the prioritized scan order.

10. The method of claim 9, wherein the locally-stored location value is a mobile country code (MCC) obtained from a subscriber identity module (SIM) card of the electronic device.

11. The method of claim 9, wherein the locally-stored location value refers to a region of the world.

12. The method of claim 9, wherein the locally-stored location value refers to a country.

13. The method of claim 9, further comprising changing the prioritized scan order to include a channel used for a last connection to a network in the beginning of the prioritized scan order.

14. The method of claim 9, further comprising storing the prioritized scan order in a configuration file in a memory of the electronic device.

15. The method of claim 14, further comprising revising the stored prioritized scan order by moving a channel used to establish network connection following the full band scan up in the prioritized scan order.

16. The method of claim 9, wherein the electronic device further includes a first SIM card storing a first MCC and a second SIM card storing a second MCC, the first MCC having priority over the second MCC, and wherein the prioritizing the order of the supported radio frequency bands places bands associated with the first MCC at the beginning of the prioritized scan order, bands associated with the second MCC after the bands associated with the first MCC in the prioritized scan order, and other supported radio frequency bands following the bands associated with the second MCC in the prioritized scan order.