Utilizing wi-fi country code to assist cellular network selection
AssigneeBlackBerry Limited
InventorsHao XUE, James Randolph Winter LEPP, Göran HAGELTORN, Jean-Philippe Paul CORMIER
Life of this patent
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Abstract
A method of selecting a cellular network entails detecting a Wi-Fi signal, obtaining a country code from the Wi-Fi signal, prioritizing cellular network frequency bands based on the country code to define a band priority, and selecting a cellular network based on the band priority. The country code may be an IEEE 802.11d Country Code Information Element.
Claims18
A method of selecting a cellular network, the method comprising:
- detecting a Wi-Fi signal;
- obtaining a country code from the Wi-Fi signal;
- prioritizing cellular network frequency bands to scan based on the obtained country code to define a band priority;
- selecting a cellular network based on band priority;
- and
- applying a first timer to set a threshold amount of time to elapse before performing the detecting of the Wi-Fi signal and the obtaining of the country code from the Wi-Fi signal and applying a second timer to limit a total scan time.
(canceled)
A non-transitory computer-readable medium comprising instructions in code which when loaded into a memory and executed by a processor of a mobile device cause the mobile device to:
- detect a Wi-Fi signal;
- obtain a country code from the Wi-Fi signal;
- prioritize cellular network frequency bands to scan based on the obtained country code to define a band priority;
- select a cellular network based on the band priority;
- and
- apply a first timer to set minimum amount of time to elapse before performing the detecting of the Wi-Fi signal and the obtaining of the country code from the Wi-Fi signal and to apply a second timer to limit a total scan time.
(canceled)
A mobile device comprising:
- a cellular radiofrequency transceiver;
- a Wi-Fi receiver that detects a Wi-Fi signal;
- a processor operatively coupled to the Wi-Fi receiver to obtain a country code from the Wi-Fi signal;
- a memory operatively coupled the processor for storing the country code;
- wherein the processor is configured to:
- prioritize cellular network frequency bands to scan based on the country code to define a band priority;
- cooperate with the cellular radiofrequency transceiver to select a cellular network based on the band priority;
- and
- apply a first timer to set a minimum amount of time to elapse before detecting of the Wi-Fi signal and obtaining of the country code from the Wi-Fi signal and to apply a second timer to limit a total scan time.
(canceled)
Dependencies are inferred from the claim text.