Real-time interactive teaching system based on application-layer multicast services

Abstract

The invention relates to the technical field of streaming media data processing and network communication, in particular to a real-time interactive teaching system based on application-layer multicast services. The interactive teaching system comprises a teaching terminal and an attending terminal, wherein the teaching terminal and the application-layer multicast protocol constitute an application-layer multicast overlay network, thus achieving the real-time transmission of multimedia data for teaching and carrying out real-time interaction between the teaching terminal and the attending terminal. Accordingly, the invention aims to combine the application-layer multicast services with the streaming media, thus providing a network teaching environment having the advantages of short time delay, low requirements for bandwidth, high quality of audio and video transmission and real-time interaction, solving the problem that the conventional teaching process is constrained temporally and spatially, and expanding the teaching scale at the same time.

Description

technical field The invention belongs to the technical field of application layer multicast and streaming media, and in particular relates to a real-time interactive teaching system based on application layer multicast. Background technique At present, with the development of computer technology, communication technology and network technology, new services centered on streaming media emerge in an endless stream, such as VOD (Video On Demand), video conferencing, distance learning, Internet TV, etc., resulting in a sharp consumption of network bandwidth. Broadcast technology is one of the key technologies to solve these applications. Multicast is a one-to-many or many-to-many multi-party communication form. Applications such as teleconferencing, interactive simulation, distributed content systems, and multi-party games all have requirements for multicast services. A great benefit of application layer multicast is data replication and forwarding by end systems. Application...

AI Technical Summary

Problems solved by technology

Streaming media business is characterized by large data transmission volume, strong implementability, strict time synchronization requirements, and requires the network to provide guaranteed service quality, but TCP / IP-based transmission cannot provide effective bandwidth, jitter, delay, etc. Support, the service quality of communication cannot be guaranteed. With the increase of the number of access hosts, the performance requirements of the server are getting higher and higher, and more and more server resources are occupied, such as bandwidth

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