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基于应用层中继的多径传输系统(MPTS-AR)是一种基于应用层中继的多径传输系统,通过基于用户数据报协议的中继服务器构建端到端的多径传输条件,并可支持多种业务实现多径传输.提出基于OMNeT++平台上的INET Framework实现MPTS-AR网络仿真的方法,包括用户代理、中继服务器和中继控制器等网络逻辑实体的二次开发方法、相关网络链路和网络拓扑的构建方法、消息定义与处理方法等;讨论了应用程序接口兼容和多业务支撑等重难点技术.最后,通过H.264业务传输实例验证了所设计MPTS-AR网络仿真的正确性和有效性.
Multi-path transmission system based on application layer relay (MPTS-AR) is a multi-path transmission system based on application layer relay. Through the relay server based on user datagram protocol, end-to-end multi-path transmission conditions are constructed. Support multiple services to achieve multi-path transmission.This paper proposes a method of implementing MPTS-AR network simulation based on INET Framework on OMNeT ++ platform, including secondary development of network logic entities such as user agent, relay server and relay controller, Link and network topology construction method, message definition and processing method, etc.It also discusses some important and difficult technologies such as application program interface compatibility and multi-service support.Finally, through the example of H.264 service transmission, the designed MPTS-AR network simulation Correctness and validity