A data transmission method and device
A data transmission method and a data packet technology, which are applied in the field of data transmission methods and devices, can solve problems such as reduced data transmission efficiency, increased packet loss rate, and impact on user experience, and achieve the effect of reducing data retransmission and reducing the number
Active Publication Date: 2022-04-22
BEIJING QIYI CENTURY SCI & TECH CO LTD
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Problems solved by technology
[0006] Although the sending end can realize data transmission by applying the above method, since the number of data packets and the number of redundant packets in each FEC packet are fixed, that is to say, the size of each FEC packet is fixed, and because the network environment is relatively In the worst case, the packet loss rate will increase. For example, once the number of lost packets is greater than the number of redundant packets in the FEC packet, the receiving end cannot recover the lost data packets using the received redundant packets, and the sending end needs to resend the data package, which in turn leads to a reduction in data transmission efficiency and affects user experience
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[0072] The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
[0073] see figure 1 , figure 1 It is a schematic flowchart of a data transmission method provided by an embodiment of the present invention. The method is applied to the sending end. The above data transmission method includes the following steps:
[0074] S101: Obtain the feedback from the receiving end to inform that the ACK response has been received and to notify that the NACK response has not been received.
[0075] The foregoing ACK response may be understood as information that the foregoing receiving end confirms receipt of the data packet.
[0076] The aforementioned NACK response can be understood as: the information that the aforementioned receiving end has not received the data packet.
[0077] Specifically, if the receiving end receives the data packet sent by the sending end, it can fee...
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The embodiment of the present invention provides a data transmission method and device, which relate to the field of network technology. When applied to the sending end, the above method includes: obtaining the ACK response and NACK response fed back by the receiving end; The number of received packets at the end, according to the received NACK response to obtain the number of packet loss in the period and the maximum continuous packet loss interval; according to the number of received packets and the number of lost packets, calculate the packet loss rate; according to the packet loss rate and the maximum continuous packet loss In the packet interval, calculate the first quantity of data packets in the FEC group and the second quantity of redundant packets; obtain the first quantity of data packets, obtain the second quantity of redundant packets according to the first quantity of data packets; convert the first quantity and the second quantity are updated to each data packet and each redundant packet as FEC parameters, and each data packet and each redundant packet are sent to the receiving end. Applying the solutions provided by the embodiments of the present invention for data transmission can improve data transmission efficiency.
Description
technical field [0001] The invention relates to the field of network technology, in particular to a data transmission method and device. Background technique [0002] With the vigorous development of the Internet, users have higher and higher requirements on the quality of network services. Data transmission between the sending end and the receiving end may be implemented based on FEC (Forward Error Correction, Forward Error Correction) technology. [0003] In this case, the size of the FEC group is generally preset, that is, the first number of data packets and the second number of redundant packets included in each FEC group are set. [0004] When the sending end sends data to the receiving end, the sending end obtains the second number of redundant packets according to the first number of data packets, and uses the first number of data packets and the second number of redundant packets as a FEC packet, and sends the data to the receiving end Each data packet and redunda...
Claims
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IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/004H04L1/0041H04L1/0045H04L5/0055H04L1/0015
Inventor 徐俊俊
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD