Faces in the Clouds: Long-Duration, Multi-User, Cloud-Assisted Video Conferencing
Faces in the Clouds: Long-Duration, Multi-User, Cloud-Assisted Video Conferencing
复制标题
DOI：
10.1109/tcc.2017.2680440
复制
发表时间：
2019-07
影响因子：
6.5
通讯作者：
R. Clegg;R. Landa;D. Griffin;M. Rio;Peter Hughes;Ian Kegel;T. Stevens;P. Pietzuch;Doug Williams
中科院分区：
文献类型：
--
作者：
R. Clegg;R. Landa;D. Griffin;M. Rio;Peter Hughes;Ian Kegel;T. Stevens;P. Pietzuch;Doug Williams
多用户视频会议是一种无处不在的技术。越来越多的会议中的终端主机得到基于云的服务器的协助，从而提高了终端用户的体验质量。本文评估了这些服务器的放置策略对用户体验和部署成本的影响。我们考虑了基于Amazon EC2基础设施的场景，以及云实例可以位于全球范围内大量可能站点的未来场景。我们比较了一些可能的策略，以选择哪些云位置应该托管服务，以及流量应该如何通过它们。我们的研究由真实的数据驱动，以创建具有现实地理用户分布和昼夜行为的需求场景。我们的结论是，在EC2基础设施上，精心选择的服务器静态选择表现良好，但随着更多的云位置可用，服务器的动态选择变得重要。
Multi-user video conferencing is a ubiquitous technology. Increasingly end-hosts in a conference are assisted by cloud-based servers that improve the quality of experience for end users. This paper evaluates the impact of strategies for placement of such servers on user experience and deployment cost. We consider scenarios based upon the Amazon EC2 infrastructure as well as future scenarios in which cloud instances can be located at a larger number of possible sites across the planet. We compare a number of possible strategies for choosing which cloud locations should host services and how traffic should route through them. Our study is driven by real data to create demand scenarios with realistic geographical user distributions and diurnal behaviour. We conclude that on the EC2 infrastructure a well chosen static selection of servers performs well but as more cloud locations are available a dynamic choice of servers becomes important.