面向高校的在线教学云直播平台体系架构设计与应用

Design and application of online living teaching cloud platform architecture for universities

针对现有在线教学平台普遍存在的技术性要求高、支持人数有限、难以满足板书需求、无法满足“线上+线下”混合式教学等问题,提出一种面向全国高校的通用性云直播平台体系架构设计方案.利用现有教室中的摄像头和多媒体教学设备进行直播;支持CARSI联邦身份认证,使全国高校都能以云租户形式接入并进行自服务管理;建立基于租户和课程属性的数据模型,实现细粒度的权限划分和授权,加强资源共享的安全性.该方案应用于北京大学燕云直播平台建设,截至2020年9月,平台视频总点击量978000次,高峰时段在线观看人数26837人.

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 978000,and the number of online viewers during peak hours is 26837.