Method, device and system for data transmission based on forward error correction (FEC)

A technology of forward error correction and data transmission method, applied in the direction of digital transmission system, transmission system, error prevention, etc., can solve the problems of high erasure correction capability, low bandwidth occupancy rate, low receiving delay, etc., and achieve improved erasure correction The effect of improving the ability and error recovery performance
CN101674152AInactive Publication Date: 2010-03-17张立娟
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
张立娟
Publication Date
2010-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method, a device and a system for data transmission based on forward error correction (FEC). The method mainly comprises the following steps: after acquiring original data to be sent, generating corresponding data verifying information according to a predeterminated strategy on the basis of the original data to be sent and a known intercalation mark; selecting to send the data verifying information and the original data to be sent according to the predeterminated strategy; correspondingly, acquiring the original data (the original data are possibly incomplete due tothe data loss in the process of transmission) and the data verifying information from a received data packet by a receiving end; and recovering the acquired complete original data sent by a sending end according to the data verifying information and the known intercalation mark. In the embodiment of the invention, because a mode of adding the data information amount which generates the data verifying information in the sending end is adopted and the added data information is known by the sending end and the receiving end, the corresponding error recovery performance in the receiving end can be greatly improved, and the erasure capability of the FEC technology can be effectively improved further.
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Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to a data transmission technology based on forward error correction. Background technique

[0002] With the development of the Internet, in order to provide bearer services with QoS (Quality of Service) guarantee, when the receiving end finds data loss, it usually uses FEC (Forward Erasure Correction) technology at the application layer to restore the lost data packets.

[0003] FEC technology is in the process of sending data packets, the additional sending part carries the redundant data of the original data information, so that the receiving end can restore the original data lost in the transmission process through the received redundant data and the received original data. data, which in turn can provide a more reliable QoS guarantee.

[0004] In the 3GPP (Third Generation Partnership Project) communication system, the application of the corresponding FEC technolo...

Claims

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