Flexible data transmission method of flexible data transmission protocol based on TCP/IP protocol
A transmission protocol and flexible data technology, applied in the field of flexible data transmission, can solve problems such as unreliability, redundant and unstable transmission process, and achieve the effect of ensuring reliable data transmission, high transmission rate, and increasing flexibility.
Active Publication Date: 2020-02-21
NORTHWESTERN POLYTECHNICAL UNIV
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[0005] It can be seen from this that the reliability and security of the TCP protocol are high, but the transmission rate is relatively low due to the complicated transmission process; the UDP protocol has a high transmission rate due to its connectionless orientation and simple program mechanism, but there are also some disadvantages. Disadvantages of reliability and instability
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[0030]An implementation method of a flexible data transmission protocol based on the TCP / IP protocol, including designing a new UDP protocol header, introducing a new connection establishment and release mechanism, a cumulative confirmation mechanism, an immediate retransmission mechanism, a flow control mechanism, and a double-queue acceleration mechanism and send and receive mechanisms.
[0031] Specifically, refer to figure 1 , a flexible data transmission protocol based on the TCP / IP protocol. It is a connection-oriented message-based transmission protocol formed by adding some control fields to the header of the original UDP protocol. From the perspective of the network reference model, it is also A layer between the application layer and the UDP transport protocol layer, its existence increases the reliability of the UDP protocol.
[0032] A flexible data transmission protocol based on the TCP / IP protocol is formed by adding some control fields to the header of the orig...
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The invention relates to a flexible data transmission method of a flexible data transmission protocol based on a TCP / IP protocol. A connection-oriented transmission protocol based on a message packetis formed by adding some control fields to the header of an original UDP protocol. An original stop waiting protocol is replaced with the accumulated confirmation mechanism; an immediate retransmission mechanism is adopted, an unnecessary congestion control mechanism is removed, and the transmission flexibility is improved through mutual cooperation of a sending mechanism, a confirmation mechanismand a retransmission mechanism; a GBN-based sliding control mechanism is introduced and the GBN-based sliding control mechanism is correspondingly improved to serve as a flow control mechanism; and aping-pong cache mechanism is adopted to split the sending queue into two queues for simultaneous operation. Compared with the traditional transmission protocol, the method has the characteristics ofsafety and reliability of the TCP protocol on the basis of high-speed transmission of the UDP protocol. The method has the beneficial effects that the function of ensuring reliable data transmission in the transmission process of the network data packet can be realized, and meanwhile, the transmission rate is relatively high.
Description
technical field [0001] The invention belongs to the technical field of computer network communication, and relates to a flexible data transmission method based on the flexible data transmission protocol of the TCP / IP protocol. Background technique [0002] As the most common LAN communication protocol standard today, Ethernet has the advantages of reliable communication, fast transmission speed, long-distance transmission and adaptability to various transmission media. The TCP / IP protocol has an open protocol standard, does not rely on fixed hardware or software systems, and can integrate the TCP / IP protocol into different network standards. It is currently the most widely used network communication protocol. The protocols that complete data transmission and control in the TCP / IP protocol suite mainly include TCP and UDP. [0003] The TCP protocol is a stream-based, connection-oriented and reliable data transmission protocol, which can realize both parties in communication ...
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IPC IPC(8): H04L29/06
CPCH04L69/16H04L69/164
Inventor 韩鹏
Owner NORTHWESTERN POLYTECHNICAL UNIV