What video can and can't do for collaboration: a case study
MULTIMEDIA '93 Proceedings of the first ACM international conference on Multimedia
The effects of jitter on the peceptual quality of video
MULTIMEDIA '99 Proceedings of the seventh ACM international conference on Multimedia (Part 2)
Global multimedia collaboration system: Research Articles
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Proceedings of the ACM/IFIP/USENIX 2003 International Conference on Middleware
Investigating the performance of audio/video service architecture II: broker network
CTS'05 Proceedings of the 2005 international conference on Collaborative technologies and systems
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Increasing network bandwidth and computing power provide new opportunities for videoconferencing systems over Internet. The number ofhomes and small offices with broadband Internet connections are increasing rapidly. Even cell phones will have broadband Internet access in the near future. Therefore, it is not inconceivable to imagine that the trend in the increasing usage of videoconferencing systems will continue by accelerating. This requires universally accessible and scalable videoconferencing systems that can deliver thousands of concurrent audio and video streams. However, developing videoconferencing systems over Internet is a challenging task, since audio and video distribution requires high bandwidth and low latency. Current videoconferencing systems such as IP-Multicast [1] and H.323 [2] can not fully address the problem of scalability and universal accessibility. We propose service oriented architecture for videoconferencing, Global MMCS, and use an event brokering middleware, Narada Brokering, to deliver real-time audio and video streams to high number of users. The performance of the event brokering network is critical to the success ofthis videoconferencing system. In this paper, we provide comprehensive analysis of a Narada Brokering broker in the context of audio/video delivery. The results provide guidelines for the deployment of Global MMCS in particular, and they provide useful insights for the feasibility of using software based audio/video delivery systems in general.