Issuing method for multimedia courseware based on stream media platform

Abstract

The embodiment of the invention provides an issuing method for multimedia courseware based on a stream media platform. The method comprises the following steps: a network architecture based on the stream media platform takes central nodes as core nodes of an application layer multicast network, uses each secondary node as an edge pushing node, and divides each secondary node into different regions to deploy a peer to peer (P2P) service in the divided regions; and during the process of issuing the multimedia courseware, live programs are pushed to the secondary nodes through direct connection of the core nodes and the secondary nodes, and request programs are directly pushed to storage brought by each secondary node through the core nodes. The network architecture can solve the bottleneck problem of a network bandwidth, use bandwidth resources at a maximal limit, improve interconnection and intercommunication effects of the regional-crossing network and service quality of stream media so as to smoothly develop a network education platform.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method for publishing multimedia courseware based on a streaming media platform. Background technique [0002] At present, the forms of online training mainly include asynchronous on-demand learning, live broadcast learning, real-time interactive learning and other methods. For example, if a comprehensive online education platform is to be built to cover grassroots party organization education and information exchange services in 13 districts and counties, 183 townships, and 3,955 administrative villages in Beijing, it is required that the platform can meet the requirements of 8,000 concurrent User requirements, that is, there are 8,000 concurrent users in 13 districts and counties accessing live programs or on-demand programs on the distance education city-level platform at the same time, and each administrative village or town has 2 concurrent points, so the total concurr...

AI Technical Summary

Problems solved by technology

[0004] To obtain high-quality content, even if H.264 video compression technology is used, the video code stream needs to be at least 512K, so 500 people need 512K×500=250M bandwidth for simultaneous on-demand or live broadcast; and the total number of servers placed in districts and counties is only 100M export bandwidth, so the traditional streaming media method will definitely not be able to solve this problem

In the prior art, the commonly used content delivery network CDN (Content Delivery Network) technology solution is to implement application-layer multicast technology by deploying content push servers at the edge of users. CDN technology can very well allow a large number of users to simultaneously access The incoming server load and traffic pressure are distributed to each server in the CDN server group, and users often visit nearby, so as to realize the effect of increasing the service capability of the streaming media system; The cost is also very huge. At the same time, because the system capacity of the CDN network is relatively fixed at the time of design, if the system redundancy is insufficient, it will bring about a decline in the service quality of the entire CDN network, and even affect the normal operation of other services. run

Taking the above example as an example, the service node includes 1 central node and 13 secondary nodes, and the cumulative external service bandwidth is only 80Mbps+13*100Mbps=1380Mbps, so if CDN technology is used, theoretically only 1380Mbps / 800kbps=1725 can be guaranteed Users watch online, which does not include the bandwidth overhead used for CDN organization management and control. Even if the bit rate of all programs is reduced to 500kbps, the entire system can only guarantee 1380Mbps / 500kbps=2760 users to watch online in theory. In addition to the cost of greatly reducing the quality of the entire service screen, it still cannot reach the level of online viewing required by the above-mentioned system of 8000 users

[0005] It can be seen that the multimedia courseware publishing method of the CDN streaming media platform in the prior art cannot solve the problem of bandwidth bottleneck, and cannot maximize the use of bandwidth resources, thus affecting the normal development of the network education platform

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