Patent ID: 8165589

Claim:
A mobile terminal for selectively connecting to a wireless wide area network (WWAN) and a wireless local area network (WLAN), the WWAN and the WLAN connecting to a control center, the mobile terminal comprising: a first network module making a connection to the WLAN and detecting a first signal level of a first signal transmitted by the WLAN; and a second network module for detecting a second signal level of a second signal transmitted by the WWAN; and a processing module calculating a third signal level according to a first compensation value and the first signal level, the processing module sending the third signal level and the second signal level to the control center; wherein when the third signal level is smaller than a first threshold and the second signal level is greater than a second threshold, the control center sends a switch command to the processing module and the mobile terminal switches the connection from the WLAN to the WWAN, wherein when the third signal level is greater than the first signal level, there is a first coverage for the mobile terminal in the WLAN and when the third signal level is smaller than the first signal level, there is a second coverage for the mobile terminal in the WLAN, the first coverage is greater than the second coverage.