多端口自适应UDP通信协议的设计与实现

摘要

To solve the problem of the real-time data loss in the process of the UDP protocol link reconstruction for the embedded airborne equipment,the multi-port adaptive communication protocol MP-UDP was proposed.Building the link,data validation and retransmission were used to communicate properly.When the current link needed to be rebuilt after three times of retransmission,the RMP (Rank_ Move_ Program) algorithm was used to migrate the communication from the current link to the new link adaptively.The models of client and server were established in the Simulink to implement the MP-UDP protocol with graphical approach.The results of verification experiment,which were compared to UDP protocol,indicate that the link can be migrated automatically in the process of the reconstruction,the packet loss rate is far less than the UDP protocol,and the real-time data are guaranteed not to lose.%为解决嵌入式机载设备在UDP协议重建链路过程中丢失实时数据的问题,提出一种多端口自适应UDP通信协议MP-UDP.通过建链、数据确认、重传等机制进行正常通信,在当前链路重传3次失败需要重建时,利用RMP (Rank Move_ Program)算法以自适应的方式迁移到新的端口链路上进行通信.在Simulink中建立客户端和服务端模型,以图形化的方法实现MP-UDP协议.实验结果表明,与UDP协议相比,MP-UDP协议在链路重建时能自动进行链路迁移,丢包率远小于UDP协议,能够保证实时数据不丢失.