Study And Application On Reliability Guarantee Mechanism Of Data Transmission Based On UDP

With the rapid development of computer networks,the factors of data transmission reliability,security and equity will impact the efficiency of data transmission directly.However,an efficient and reliable computer networks protocol can finish the data transmission very well.So,optimizing the computer network protocol can improve the efficiency of data transmission fundamentally.Nowadays,the most widely used computer protocol is TCP/IP protocol.In the TCP/IP protocol suite,data transmission and control is mainly done by the transfer protocol TCP and UDP.They have their own advantages in their respective data transmission areas.The most remarkable feature of TCP protocol is that it can ensure data transmission with high reliability and security.UDP protocol can ensure data transmission with high efficiency.However,they cannot combine the advantages of both to meet the general application.In order to maintain data transmission in a high speed and ensure its reliability,this paper analyzes the computer networks protocol to meet the characteristics of the above data transmission.In terms of the needs of data transmission high efficiency and reliability,this paper proposes an efficient and reliable data transmission protocol called D-ERUDP(Deque Efficient and Reliable Protocol Based on UDP,D-ERUDP).The core feature of D-ERUDP is that the sender and receiver of D-ERUDP use a double queue to finish data transmission and confirmation.It uses queue data distribution mechanism,queue data sending mechanism,queue data confirmation,retransmission mechanism and serial number detection mechanism to guarantee the reliability and efficiency of data transmission effectively.To a certain extent it improves the throughput of data transmission at the same time.Aiming at the problem of congestion control,in order to ensure the smoothness of the data transmission rate and obtain the optimal value of the dynamic change of the transmission rate,D-ERUDP proposes a strategy for dynamically and adaptively updating the rate of data packet(Dynamically and Adaptively Rate Control,DARC).The core idea of DARC is that the sender can adjust the rate of queue data according to the state of network congestion.Based on the NS2(Network Simulator,Version 2)simulation tool,this paper realizes the sending algorithm of sender modules and the receiving algorithm of receiver modules in DERUDP.At the same time,this paper completes the simulation process of data transmission and verifies data transmission reliability and efficiency based on D-ERUDP.The reliability and efficiency of the D-ERUDP are verified.We apply D-ERUDP protocol to a radar control system which effectively solves data transmission problem of low efficiency and reliability between the computer display side,the embedded processing side and the radar terminal.It meets the requirements of real-time data transmission with high efficiency and reliability.This research results of this paper have a good reference for the way selection of data transmission with high reliability and high efficiency.