Patent ID: 8897785

Claim:
A multi-mode mobile communication terminal for switching between modes during cell selection, the multi-mode mobile communication terminal configured to connect to a plurality of mobile communication networks with different communication protocols, the multi-mode mobile communication terminal comprising: a first radio apparatus configured to communicate a radio signal via a first mobile communication network and receive a system information block broadcasted from the first mobile communication network, based on a protocol of the first mobile communication network; a second radio apparatus configured to communicate a radio signal via a second mobile communication network, based on a protocol of the second mobile communication network, wherein the second mobile communication network is different from the first mobile communication network; and a mode switch controller configured to control the operation of both the first radio apparatus and the second radio apparatus, wherein the mode switch controller is configured to select a first cell of the first mobile communication network when a signal from the first cell is detected through the first radio apparatus, in a state that the multi-mode mobile communication terminal is not connected to the first mobile communication network and the second mobile communication network, receive, through the first radio apparatus, the system information block broadcasted from the first cell, the system information block including information on a preferred mobile communication network, determines whether mode switching from the first mobile communication network to the second mobile communication network is to be performed based on the information on the preferred mobile communication network included in the system information block, and perform the mode switching based on the determination by deactivating the first radio apparatus and activating the second radio apparatus.