Unidirectional reliable transmission method and transceiving device based on data packets

A transmission method and data packet technology, applied in the field of one-way reliable data transmission, can solve the problem of not being able to take into account the error correction and packet loss recovery in the packet, and achieve the purpose of avoiding packet loss, good resistance, and flexible adjustment. Effect

Inactive Publication Date: 2010-09-15
BEIJING UNIV OF POSTS & TELECOMM
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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

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  • Unidirectional reliable transmission method and transceiving device based on data packets
  • Unidirectional reliable transmission method and transceiving device based on data packets
  • Unidirectional reliable transmission method and transceiving device based on data packets

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Embodiment Construction

[0051]The present invention will be described in detail below through the accompanying drawings and examples.

[0052] figure 1 The system framework of the present invention is illustrated. The system includes two parts, the sending end and the receiving end. The sending end further includes a data packet generation module, a packet layer erasure code encoding module, a CRC encoding module, a data encapsulation module, and an FEC encoding module in a packet. Transport module. The data packet generation module is used to divide the information data packets to be sent into sequence of information data packets in sequence, and group the numbered data packets. The envelope layer erasure code encoding module is used to generate redundant packets by encoding each sub-encoded packet group in an erasure code encoding manner. CRC check module. It is used to perform CRC encoding on the data in each data packet to generate check information. The data encapsulation module is used for ...

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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...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 刘元安曹震谢刚唐碧华袁东明黎淑兰于翠屏王坤明
Owner BEIJING UNIV OF POSTS & TELECOMM
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