Patent ID: 8351941

Claim:
A method of switching bearers, in a process of establishing a bearer from a communication terminal device connectable to a plurality of communication networks via any one of said plurality of communication networks to a destination, and performing a predetermined selection operation with respect to said bearer to be established, to thereby switch it to an optimum bearer to the destination, comprising: storing identity information for each of said bearers to which said communication terminal device is connected, and a priority value and an predetermined unique weight value assigned for each application of a plurality of applications installed in said communication terminal device communicating with said destination, wherein priority data for each application is determined using quality of said bearers; monitoring communication quality of the bearers and derive a quality indicator for each of the bearers; retrieving, from a memory unit of said communication terminal device, the bearers' identity information and said priority value corresponding to one of the plurality of applications being executed by said communication terminal device to communicate with said destination; determining the priority value for each of the plurality of applications by multiplying the derived quality indicator of each of bearers by the predetermined unique weight value for said each application selecting the optimum bearer for the one of the plurality of applications being executed by comparing the determined priority values corresponding to the plurality of bearers retrieved by a readout unit of the communication terminal device; and setting a different priority for each combination of the selected bearer and the bearer from which the selected bearer is switched to make a switch decision.