Unidirectional reliable transmission method and transceiving device based on data packets

Abstract

The invention relates to a unidirectional reliable transmission method and a transceiving device based on data packages, belonging to the field of computer networks. In the method, a transmitting end firstly segments an information data block into data package sequences, classifies the data packages, covers erasure correcting codes and carries out coding to generate a redundancy packet covered by each subcode, then carries out cyclic redundancy code (CRC) coding on each data package, finishes the packaging of the data packages, carries out forward error correction (FEC) coding inside the packages on all data packages and finally transmits data into a receiving end; and the receiving end firstly carries out caching on data packages, FEC decoding inside the packages on all data, sequencing on the data packages and verifying by CRC codes, judges whether the data packages lose or not by detecting package numbers and carries out package loss recovery if information data packages lose. The invention solves the technical field of not being capable of carrying out self-checking and error self-correction based on data package transmission under a unidirectional channel and can correct in-packet information errors inside the packages and recover continuous package loss.

Description

technical field [0001] The invention relates to a one-way reliable data transmission technology, which can effectively solve the self-verification and self-recovery of bit errors in the data packet and data packet loss during the one-way transmission process of the data packet, and belongs to the field of computer network communication. Background technique [0002] The main application scenarios of the one-way channel: the information security transmission system of the isolated gatekeeper, deep space communication, radio and television communication system, etc. The unreliability of information transmission under unidirectional channel includes two aspects: bit errors in data packets and loss of data packets. [0003] In order to ensure the reliable transmission of data, technologies commonly used at present: automatic repeat request (ARQ) technology and forward error correction (FEC) technology. ARQ technology: through the feedback channel, the lost data segment informat...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned reasons, one of the objects of the present invention is to provide a method for one-way reliable transmission based on data packets, to solve the technical problem that the error correction in the packet and the recovery of lost packets cannot be well taken into account during the one-way transmission of data.

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