Multi-stream service concurrent transmission method, sub-system, system and multi-interface terminal

The invention discloses a multi-stream service concurrent transmission method. The method comprises: a multi-interface terminal initiating a service transmission request to a network side; the multi-interface terminal receiving information of database servers capable of providing a resource of a requested service and service information of the requested service; the multi-interface terminal establishing multiple concurrent links with the database servers, splitting service data packets of the requested service, and notifying the network side of the splitting result; and the multi-interface terminal receiving, through the established multiple concurrent links, the service data packets of the requested service. Also correspondingly disclosed are a multi-stream service concurrent transmission sub-system, system and multi-interface terminal. According to the invention, traffic distribution transmission is implemented based on a decision of a multi-interface terminal side, and there is no need to add different functional entities at the network side for different network architectures, so that the universality is high; and the multi-interface terminal side can sense in time the change of the environment of the multi-interface terminal and make timely response and policy adjustment so that the robustness of a traffic distribution policy is high.