Method and device for transmitting data in unidirectional network

Abstract

The invention discloses a method and a device for transmitting data in a unidirectional network. The method comprises the following steps: if original data to be transmitted are incontinuous medium information, grouping the original data into a data packet with fixed length at a transmitting end, carrying out outer code coding on the grouped data packet, then carrying out inner code coding on thedata packet after outer code coding and afterwards, delivering the data packet after inner code coding into a transmission path; judging the type of the medium information according to the load type of coding data at a receiving end; and if the type of the medium information is the incontinuous medium information, carrying out inner code decoding on the data packet received from the transmission path and then carrying out outer code decoding on the data packet after inner code decoding to obtain the original data. By applying the invention, the end-to-end reconstruction capability of data transmission is reinforced, and the reliability of the data transmission of the unidirectional network is enhanced, thereby achieving the aim of enhancing the communication quality of the unidirectional network effectively.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for transmitting data in a unidirectional network. Background technique [0002] The Internet is a network based on packet switching, which uses a store-and-forward technology based on data packets. Each data packet carries control information such as destination address and source address, and the switching node caches the received data packets. The data packet is handed over to a certain port for forwarding. [0003] In Internet network communication, network communication is usually established on top of TCP protocol or UDP protocol, among which TCP is a connection-based protocol, which can provide reliable communication connection for applications, and can make the byte stream sent by a computer error-free. To other computers on the network, specifically, the TCP protocol establishes a connection through three-way handshake information. When transm...

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Problems solved by technology

[0006] However, it is precisely because the current FEC methods mostly involve audio, image, streaming media and other transmission fields, so most of the current FEC methods are multicast transmissions, and there are weak feedback phenomena in multicast transmissions, that is, the receiving end will also notify If a packet at the sender is not received, the sender will multicast the packet again, so this type of FEC error control method is not purely feedback-free

[0007] However, there are many occasions where there are pure application scenarios without any feedback. For example, when a low-density network is connected to a high-density network, only low-density information can be allowed to flow to the high-density network without any reverse information transmission.

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