Hybrid automatic repeat request-based data transmission method and system

A technology of hybrid automatic retransmission and data transmission methods, applied in the field of network communication, can solve the problems of accumulated delay, rtmp cannot meet product requirements, etc., and achieve the effect of reducing the pressure of bandwidth, reducing the number, and improving the efficiency of data transmission

Active Publication Date: 2017-10-17
张超
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The tcp protocol also has the phenomenon of cumulative delay. When the network status is poor, the tcp protocol will cache the data packets, resulting in more cumulative delay.
[0003] Due to the above-mentioned problems in the rtmp protocol, rtmp cannot meet the product requirements in products or industries with high real-time requirements, such as live broadcast industry, remote control industry, etc.

Method used

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  • Hybrid automatic repeat request-based data transmission method and system
  • Hybrid automatic repeat request-based data transmission method and system
  • Hybrid automatic repeat request-based data transmission method and system

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Embodiment Construction

[0042] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, so they are only examples, and should not be used to limit the protection scope of the present invention.

[0043] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0044] Such as figure 1 As shown, this embodiment provides a data transmission method based on HARQ, including:

[0045] In step S1, the sending end splits the data to be sent into multiple data packets, attaches a unique identifier to each data packet, sends the data packet to the receiving end, and stores the data packet in a storage area to be confirmed.

[0046] In step S2,...

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Abstract

The invention relates to the technical field of network communication, and particularly relates to a hybrid automatic repeat request-based data transmission method and system. The hybrid automatic repeat request-based data transmission method comprises a first step that a sending terminal splits to-be-sent data into multiple data packages, attaches a unique identifier to each data package, sends the data packages to a receiving terminal, and stores the data packages in a to-be-determined storage area; a second step that the receiving terminal checks the received data packages, and sends identifiers of data packages checked unsuccessfully to the receiving terminal; and a third step that the sending terminal extracts data packages to be retransmitted from the to-be-determined storage area according to the received identifiers, and sends the data packages to the receiving terminal. According to the hybrid automatic repeat request-based data transmission method and system, both real-time performance and reliability of data transmission are ensured due to adoption of an accurate retransmission mechanism.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a data transmission method and system based on a hybrid automatic repeat request. Background technique [0002] The prior art generally adopts the rtmp (Real Time Messaging Protocol) transmission protocol during real-time live broadcast, but because the rtmp protocol is developed based on the tcp (Transmission Control Protocol, Transmission Control Protocol) protocol, and the tcp protocol is used in order to achieve reliability. Some real-time properties are discarded, such as the slow threshold of tcp and the handshake protocol of tcp, etc. Therefore, when we look at live products that use the rtmp protocol as the communication protocol, there is generally a data delay of 2-5 seconds. The tcp protocol also has the phenomenon of cumulative delay. When the network status is poor, the tcp protocol will cache the data packets, resulting in more cumulative delay. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00
CPCH04L1/0045H04L1/1819H04L1/1835H04L1/189
Inventor 张超
Owner 张超
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