Method, device and system for transmitting data by adopting retransmission and coding negotiation
A technology of data transmission and coding algorithm, applied in the field of data transmission, can solve problems such as occupying large network bandwidth, network bandwidth consumption, and affecting data transmission efficiency, so as to ensure accuracy and reliability, improve efficiency, and reduce bit error rate Effect
Inactive Publication Date: 2010-02-24
NAT UNIV OF DEFENSE TECH
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[0004] However, in the data transmission of the prior art, a single forward error correction coding algorithm cannot adapt to the situation that the network environment is easy to change. For example, in a network environment with sudden failures, a single coding algorithm may not be able to guarantee that the network environment changes when the network environment changes. The accuracy of data transmission, or a single retransmission mechanism will occupy a large amount of network bandwidth, which seriously consumes network bandwidth and affects the efficiency of data transmission
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[0031] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0032] The embodiment of the present invention can be applied to a network for message transmission based on forward error correction technology, which implements data transmission by combining retransmission and encoding negotiation. When the receiving device in the communication link receives If there is an error in decoding the message, you can first initiate a retransmission request to the sending device to request the sending device to resend the message to restore the data. If the retransmission still fails to restore the data, the data transmission can be realized through code negotiation, reducing data The bit error rate during transmission ensures the accuracy of data transmission. The encoding negotiation means that the receiving device can actively initiate a encoding negotiation request to the sending device...
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The invention discloses a method, a device and a system for transmitting data by adopting retransmission and coding negotiation. The method comprises the steps of sending a request message for retransmission to a messaging device on a communication link for retransmitting a message when a received message is wrongly decoded, and sending a request message for coding negotiation to the messaging device when the retransmitting message received from the messaging device is wrongly decoded. The device comprises a retransmitting request module and a negotiation request module. The technical scheme of the invention realizes that data can be transmitted by adopting retransmission and coding negotiation between the messaging device and the receiving device, while the reliability of data transmission is ensured and the efficiency of data transmission is promoted.
Description
technical field [0001] The invention relates to data transmission technology, in particular to a method, device and system for realizing data transmission by adopting retransmission and encoding negotiation. Background technique [0002] When network data is transmitted on the communication line, errors may occur in the data packet transmission process due to the unreliable channel on which the communication line depends. The data packet received by the receiving end is more or less different from the data packet sent by the sending end. , so that the data of the received data packet is unavailable, and this phenomenon of data packet error is also called bit error. There are many reasons for bit error, such as electromagnetic interference in radio transmission, current surge in electrical transmission link Surges or signal strength in the optical transmission link may cause the channel of the communication line to be unreliable, resulting in sudden bit errors in the data lin...
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IPC IPC(8): H04L1/18H04L1/16H04L1/00H04L29/06
Inventor 王宝生卢泽新陶孜谨龚正虎刘亚萍廖海宁陈晓梅王宏郦苏丹胡宁陈琳张晓哲陶静徐京渝
Owner NAT UNIV OF DEFENSE TECH