SYSTEM AND METHOD FOR WIRELESS NETWORK SELECTION BY MULTI-MODE DEVICES
First Claim
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1. A method in a mobile device comprising:
- maintaining an indication of wireless network services, if any, currently provided to the mobile device;
automatically determining whether to scan for a wireless network based on at least the indication of wireless network services; and
if it has been determined to scan for a wireless network, automatically scanning for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can provide a service that is not currently provided to the mobile device;
wherein automatically scanning for both GSM wireless networks and CDMA wireless networks comprises scanning for a GSM core wireless network and scanning for a CDMA core wireless network.
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Abstract
Systems and methods are provided for wireless network selection by multi-mode devices. A mobile device maintains an indication of any wireless network services currently provided to the mobile device. According to an embodiment of the application, the mobile device automatically scans for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can provide a service that is not currently provided to the mobile device. Therefore, the mobile device avoids partial service or limited service when better service is available.
77 Citations
21 Claims
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1. A method in a mobile device comprising:
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maintaining an indication of wireless network services, if any, currently provided to the mobile device; automatically determining whether to scan for a wireless network based on at least the indication of wireless network services; and if it has been determined to scan for a wireless network, automatically scanning for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can provide a service that is not currently provided to the mobile device; wherein automatically scanning for both GSM wireless networks and CDMA wireless networks comprises scanning for a GSM core wireless network and scanning for a CDMA core wireless network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A mobile device comprising:
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a wireless access radio operable to communicate with wireless networks; and a RAT selection function operable to; (a) maintain an indication of wireless network services, if any, currently provided to the mobile device; and (b) automatically determine whether to scan for a wireless network based on at least the indication of wireless network services; and (c) if it has been determined to scan for a wireless network, automatically scan for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can provide a service that is not currently provided to the mobile device; wherein automatically scanning for both GSM wireless networks and COMA wireless networks comprises scanning for a GSM core wireless network and scanning for a CDMA core wireless network.
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Specification