中文摘要：

如何建立并利用多条路径传输数据成为当前网络控制协议研究的热点，然而目前针对实时媒体数据多径传输控制协议的研究还没有完善的解决方法。针对这一实际情况，提出一种新的基于中继的端到端多径传输控制协议，协议使用中继作为建立、管理多径的重要组件，文中对多径传输控制协议定义的相关消息做了详细介绍，并通过仿真实验进行验证。仿真结果表明，该协议在传输实时音视频媒体数据时相比单径传输，在传输时延、数据丢包率、传输质量等方面有较大提高。

英文摘要：

The methods of building and applying multipath for transmission become the hot spot of current network control protocol research.There is no perfect solution for real-time media data multipath transmission control protocol.In order to tackle the problems in the practical situations, a new relay-based end-to-end multipath transmission control protocol based on relay was proposed in the paper.In the protocol,the relay is used as the important component to build and manage multipaths.The format of message and the results of simulation test related to the protocal are presented in detail.The simulation results show that when the protocol is used to transmit real-time audio and video media data,compared with single-path transmission protocal,the transmission delay,data loss rate and transmission quality are improved significantly.