Controllable Multi-party Audio/Video Collaboration Based on Multicast over CERNET

摘要

Multicast based multi-party audio/video collaboration system is one important application for collaboration in internet. Adopting multicast could save bandwidth for group communication. But native multicast is not ubiquitously available which hurdles the application, on the other hand, the current multicast based A/V collaboration system lacks effective control and service. This paper introduces the controllable multiparty audio/video collaboration systems based on multicast over China Education and Research Network (CERNET). The native multicast environment and performance monitoring, control and management on audio/video collaboration, session management and congestion controls are presented. The controllable multiparty collaboration system has been implemented and applied on CERNET successfully.