Patent ID: 8483242

Claim:
A method for processing inter Radio Access Technology (inter-RAT) measurement in a mobile station (MS) equipped with a dual modem, the method comprising: receiving, by a first processor of the MS communicating with a first communication network, a measurement control signal including a parameter for signal measurement from the first communication network, wherein the parameter includes a measurement gap start time and a measurement gap duration; transmitting, by the first processor to a second processor of the MS, a wake-up signal; entering, by the second processor, a wake-up mode from a sleep mode; transmitting, by the first processor to the second processor, timing information based on a system frame number (SFN) and a global time; acquiring time synchronization for the inter-RAT measurement between the first processor and the second processor based on the system frame number (SFN) and the global time; transmitting the parameter from the first processor to the second processor; measuring, by the second processor, a signal of a second communication network using the parameter; receiving, by the first processor from the first communication network, a measurement control message for indicating a completion of the inter-RAT measurement; transmitting, by the first processor to the second processor, a sleep signal; and entering, by the second processor, the sleep mode from the wake-up mode.