Patent ID: 7835744

Claim:
A handover method, by a handover controller, in a digital multimedia broadcasting (DMB) system that transmits/receives broadcast data through a frame group including a frame group header and signal frames of corresponding services, using different frequencies, the method comprising the steps of: receiving, by the handover controller, a first frame group header at a serving frequency to check a burst arrival time of a desired service, and receiving a burst of the desired service at the serving frequency according to the burst arrival time; turning power off, by the handover controller, until a current time arrives at a next header arrival time; receiving, by the handover controller, a second frame group header at a searching frequency different from the serving frequency, and acquiring service information of the searching frequency necessary for handover to the searching frequency at the next header arrival time; and comparing, by the handover controller, signal power/quality of the listened frequencies with each other to select a best frequency, and switching to the selected frequency using the acquired corresponding service information.