Design And Implementation Of Unified NMS Interface Based On Reliable UDP

Along with the rapid progress of value-added telecom services, date transmission service such as real time data acquisition and instance message require more reliability and performance, and more parallel connections.TCP and UDP are usually select to implement the data transmission in IP network. TCP offers reliability by providing connection-oriented, end-to-end, reliable packet delivery through a network, but poor in performance. Unlike the TCP, UDP adds no reliability, flow-control, or error-recovery functions to IP. But because of UDP's simplicity, UDP consumes less network overhead than TCP, it can be used to support parallel connection with mass data. The key of reliable and fast transmission is how to integrate these two protocols usefully.In this paper, based on the project of Datang telecom's uniform NMS interface, RUDP(Reliable UDP) is proposed based on the theory of RDP protocol, which provides a single, uniform protocol layered over UDP to the developer with the best features of UDP and TCP as well as some useful features neither provide. Through several techniques realized, such as sequencing for all packets, package acknowledgement, automatic re-transmission, multithreading buffer, RUDP could be used for data transmission with reliability and high efficiency.