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Packet loss retransmission method and device

A technology for packet loss retransmission and retransmission request, applied in the field of packet loss and retransmission, can solve problems such as delay increase, video image freeze, network congestion, etc., to reduce delay, reduce data interaction, and alleviate network congestion Effect

Active Publication Date: 2017-10-20
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If data packets are lost during video transmission, it will cause video images to freeze, and the UDP protocol itself cannot make any detection or prompts
[0003] Although the packet loss and retransmission strategy adopted in related technologies can solve the packet loss problem in UDP transmission to a certain extent, however, in some cases, this strategy will cause increased delay and network congestion, which is not suitable for real-time Video communication and other occasions with high real-time requirements

Method used

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  • Packet loss retransmission method and device
  • Packet loss retransmission method and device
  • Packet loss retransmission method and device

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Embodiment Construction

[0024] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0025] figure 1 It is a flow chart showing a method for retransmitting lost packets according to an exemplary embodiment. Such as figure 1 As shown, the method is applied to video decoding devices such as mobile phones and decoders, and the method for packet loss and retransmission includes:

[0026] Step S11, receiving video data packets, and detecting whether there is a missing da...

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Abstract

The invention relates to a packet loss retransmission method and device. The packet loss retransmission method comprises the steps of receiving data packets of a video, and detecting whether a lost data packet exists according to serial numbers of the received data packets; if the lost data packet exists, determining a type of the lost data packet according to types of the received data packets; and determining whether to send a retransmission request for the lost data packet based on the type of the lost data packet. The different types of the data packets have different importance to decoding and playing, so whether to retransmit the data packet is determined based on the type of the lost data packet; according to the packet loss retransmission method and device related by the embodiment of the invention, under the condition of not affecting the video playing, the number of sending the retransmission request is reduced; and thus, the data interaction is reduced, the time delay is reduced, and the network congestion is relieved.

Description

technical field [0001] The present disclosure relates to the field of real-time video communication, and in particular to a method and device for packet loss retransmission. Background technique [0002] With the development of Internet technology and the enhancement of the functions of mobile devices, real-time video communication has gradually become a common means of daily communication. Real-time video communication technology is a technology for real-time video communication through the network, allowing two or more people to use the network for real-time video communication. The main application scenarios include multi-person video conferencing, video telephony, telemedicine and online education, etc. Due to the real-time requirements of transmission, UDP is used for real-time video transmission. If data packets are lost during video transmission, it will cause video image freezes, etc., but the UDP protocol itself cannot make any detection or prompts. [0003] Altho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/14H04N21/4788H04N7/15H04L1/18H04L1/16
CPCH04L1/1607H04L1/1809H04N7/141H04N7/15H04N21/4788
Inventor 孙恒
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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