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Multicast transmission method, device and system

A transmission method and multicast technology, applied in the field of communication, can solve problems such as difficulty in discovery and low reliability of multicast data transmission, and achieve the effect of improving reliability

Active Publication Date: 2018-07-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a multicast transmission method, device and system to solve the problem that after the data message of the existing multicast transmission method is lost during the transmission process, it may be difficult to find it for a long time, thus resulting in reliable multicast data transmission low sex problem

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  • Multicast transmission method, device and system
  • Multicast transmission method, device and system
  • Multicast transmission method, device and system

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] see Figure 1A , is a flow chart of an embodiment of the multicast transmission method of the present invention, which embodiment includes the following steps:

[0027] Step 101: Receive a first verification message from a control channel of a multicast group, where the first verification message includes sequence number information.

[0028] The multicast transmission device first receives the first verification message sent by the sender from the control chann...

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Abstract

The embodiment of the present invention discloses a multicast transmission method, device and system, receiving the first verification message including serial number information from the control channel of the multicast group; determining the multicast datagram that should be received by the multicast group according to the serial number information Receive the multicast data message from the data channel of the multicast group; within the first predetermined time, according to the received multicast data message and the determined information that should receive the multicast data message, detect whether There is a missing multicast data packet; if there is a missing multicast data packet, send a negative acknowledgment NAK to the sender of the multicast group, so that the sender can resend the lost multicast data packet. By adopting the multicast transmission method of the present invention, the multicast receiver can use the verification message to quickly and accurately find the multicast data message lost in the transmission process, thereby greatly improving the reliability of the multicast transmission.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multicast transmission method, device and system. Background technique [0002] Software-Defined Networking (SDN for short) is a new network innovation architecture, which realizes flexible control of network traffic by separating the control plane of network equipment from the data plane, and provides a platform for core network and application innovation. good platform. In SDN, the control plane of a network device is usually centralized on a controller, and the controller device needs to send control information to multiple network devices to ensure the normal operation of the network device. Since an SDN usually contains a large number of network devices, the controller will use the multicast protocol to send control information to the network devices to ensure the efficiency of sending control information and reduce the delay in sending control information. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L1/00H04L45/16
CPCH04L1/00
Inventor 吴平
Owner HUAWEI TECH CO LTD