Abstract
In view of the common problems of the current online teaching platforms, such as high technical requirements, limited support number, difficulty in meeting the demand of blackboard writing, and unable to meet the "online+offline" hybrid teaching requirement, and so on, we propose an architecture scheme of a universal online living teaching cloud platform for universities across the country. The scheme uses the cameras and multimedia teaching equipment in the existing classroom for live broadcast, supports the CARSI federal identity authentication so that universities across the country can access and self-service management in the form of "cloud tenants". We also establish a data model based on tenants and course attributes, which realizes fine-grained authority division and authorization and strengthens the security of resource sharing. The scheme has been applied to the construction of "Yenching Cloud Classes" platform. Up to September 2020, the total number of video hits on the platform is 978 000, and the number of online viewers during peak hours is 26 837.
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