1,290 research outputs found
The VITI program: Final Report
In this report we present our findings and results from the
VITI program in 2000. The focus of the research work undertaken by
VITI has been to provide electronic meeting environments that are easy
to use and afford as natural a collaboration experience as
possible. This final report is structured into three parts. Part one
concerns the VITI infrastructure and consists of two sections. The
first section describes the process of establishing the
infrastructure, concentrating on how the work was done. The second
section presents the actual infrastructure that is in place today,
concentrating on what has been put in place. Part two examines the use
the VITI infrastructure has been put to, giving examples of activities
it has supported and discussing strengths and weaknesses that have
emerged through this use. Finally part three considers the future of
distributed electronic meeting environments. It is recommended that
the report be read in the order in which it is presented. However,
each section has been written as a standalone document and can be read
independently of the others
Estimating commitment in a digital market place environment
The future generation of mobile communication shall be a convergence of mobile telephony and information systems which promises to change people's lives by enabling them to access information when, where and how they want. It presents opportunities to offer multimedia applications and services that meet end-toend service requirements. The Digital Marketplace framework will enable users to have separate contracts for different services on a per call basis. In order for such a framework to function appropriately, there has to be some means for the network operator to know in advance if its network will be able to support the user requirements. This paper discusses the methods by which the network operator will be able to determine if the system will be able to support another user of a certain service class and therefore negotiate parameters like commitment, QoS and the associated cost for providing the service, thus making the Digital Marketplace wor
Adaptive cross-device videoconferencing solution for wireless networks based on QoS monitoring
The increase in CPU power and screen quality of todays smartphones as well as the availability of high bandwidth wireless networks has enabled high quality mobile videoconfer- encing never seen before. However, adapting to the variety of devices and network conditions that come as a result is still not a trivial issue. In this paper, we present a multiple participant videoconferencing service that adapts to different kind of devices and access networks while providing an stable communication. By combining network quality detection and the use of a multipoint control unit for video mixing and transcoding, desktop, tablet and mobile clients can participate seamlessly. We also describe the cost in terms of bandwidth and CPU usage of this approach in a variety of scenarios
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