Multiple mode terminal supporting handoff between heterogeneous network and the handoff method thereof

The present invention relates to a multi-mode terminal and a network switching method for supporting network conversion between heterogeneous networks. A number that is designed to perform protocols and data communication services provided by a suitable data communication services to the multi-mode mobile station mode controller, a plurality of communication networks wherein for controlling the connection switching between a plurality of networks using the network status monitoring information in accordance with the present invention of performing the application service section, connection switching between the connection switch by command heterogeneous network of the mode control including a program, and the common connection portion for resetting a transmission path of a data packet according to the network switching results, and the terminal number of the It includes a plurality of device drivers, which have a suitable function to the data service in a communication network. Network switch, the multi-mode, CDMA (code-devision multiple access, CDMA), the wireless portable Internet (wireless broadband internet)