Patent ID: 7978664
Filing Date: 2011-07-12
Classification: H04W

Abstract:
1. A method of switching between a WCDMA modem and a CDMA-2000 modem of an MM-MB (multimode-multiband) terminal, when the MM-MB terminal being in a WCDMA idle state moves from an overlay zone into a CDMA-2000 zone, said method comprising the steps of: (a) receiving a WCDMA signal transmitted from a WCDMA system, and measuring an Ec/Io (energy of carrier/interference of others) value by using the WCDMA signal; (b) determining whether the Ec/Io value is lower than a predetermined CDMA-2000 ON threshold TH (c) if it is determined at step (b) that the Ec/Io value is lower than TH (d) if it is determined at step (c) that the time lapse exceeds H (e) performing an initialization for a CDMA-2000 system to switch the MM-MB terminal from the WCDMA idle state into a CDMA-2000 idle state.