Network apparatus and terminal for multinet aggregation transmission, and operating method thereof

A method of terminal operation for multiple networks merge service, wherein from the authentication server, a packet transmitted by step, the server that receives the access information of the gateway that provides the multiple networks merge service occurs on the first network access information When performing a connection process to connect to the gateway corresponding to the connection procedure has succeeded, generating a first sub-flow via the first network, and via the second network added to the first sub-flow the generating a second sub-flows, and wherein the gateway is located at the contact point of the second network to the first network, the proxy coupled to the terminal and the server for data communication between the terminal and the server, a network device.