MPTCP

as an extension of the TCP

is proposed to support using multiple addresses for multipath transmission. However

focusing on the collaboration of multiple interfaces inner one terminal

the original MPTCP protocol is difficult to realize collaboration among multiple sources. Smart Identifier Network (SINET) is a new architecture for the future Internet

the core idea of which is to maximize network utilization through a large scale of component collaborations. In this paper

we extend the current uni-source MPTCP to the multi-sources MPTCP

and propose an SINET based multi-source collaborative transmission solution. Specially

we introduce the multiple sub-source collaboration methods and details the models and the core workflow. Simulation results show that the proposed mechanism can improve the utilization ratio of congestion windows from 51% to 96%

hence improves network utilization and throughput greatly.