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Retransmission method, device and system for packet loss

A technology for packet loss retransmission and retransmission request, which is applied in the field of data transmission, can solve the problems of multicast packet loss that cannot be retransmitted, and achieve the effects of avoiding link redundancy, improving link utilization, and solving the problem of not being able to retransmit

Inactive Publication Date: 2018-07-13
XIAN WANXIANG ELECTRONICS TECH CO LTD
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  • Claims
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Problems solved by technology

[0003] Embodiments of the present disclosure provide a lost packet retransmission method, device and system, which can solve the problem that existing multicast lost packets cannot be retransmitted

Method used

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  • Retransmission method, device and system for packet loss
  • Retransmission method, device and system for packet loss
  • Retransmission method, device and system for packet loss

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Embodiment Construction

[0060] 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.

[0061] An embodiment of the present disclosure provides a packet loss retransmission method, which is applied to a receiving device, such as figure 1 As shown, the packet loss retransmission method includes the following steps:

[0062] 101. Receive the data packet sent by the sending device through the multicast link, and store it in a receiving queue.

[0063] The execution subject...

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Abstract

The invention provides a retransmission method, a retransmission device and a retransmission system for packet loss, which relate to the field of data transmission and can solve the problem that existing multicast packet loss cannot be retransmitted. The specific technical solution comprises the following steps of: receiving a data packet sent by a sending device through a multicast link, and storing the data packet in a receiving queue; detecting whether the data packet in the receiving queue is continuous; sending a retransmission request that includes an identifier of a retransmitted data packet to the sending device through a unicast link when detecting that the data packet in the receiving queue is discontinuous; and receiving the retransmitted data packet sent by the sending device through the unicast link. The invention is used for data retransmission.

Description

technical field [0001] The present disclosure relates to the field of data transmission, and in particular to a method, device and system for retransmitting lost packets. Background technique [0002] With the development of video transmission technology, most video streams are currently transmitted through IP networks. IP network data transmission methods include: unicast transmission, broadcast transmission and multicast transmission. The specific transmission method is mainly selected according to the application scenario. . When the application scenario is one sending device and multiple receiving devices, multicast can be used for data transmission. However, in the process of data transmission, there will be a certain probability of packet loss, and the lost data packets are difficult to replenish and repair, resulting in mosaic or freeze when the receiving device plays the video, which affects the user experience. Contents of the invention [0003] Embodiments of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L29/06
CPCH04L1/1809H04L1/1835H04L65/61H04L65/611
Inventor 任斌苏睿
Owner XIAN WANXIANG ELECTRONICS TECH CO LTD
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