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  1. Proceedings of the second ACM SIGCOMM workshop on Mobile cloud computing (MCC '13)
  2. vSkyConf: cloud-assisted multi-party mobile video conferencing
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A peek into smartphones, cloud services and their security
MPSDataStore: a sensor data repository system for mobile participatory sensing
Energy-efficient content retrieval in mobile cloud
ENDA: embracing network inconsistency for dynamic application offloading in mobile cloud computing
Seeker-assisted information search in mobile clouds
Enabling secure location-based services in mobile cloud computing
Accelerating the mobile web with selective offloading
Mobile fog: a programming model for large-scale applications on the internet of things
vSkyConf: cloud-assisted multi-party mobile video conferencing
Towards resource sharing in mobile device clouds: power balancing across mobile devices
CrowdWatch: enabling in-network crowd-sourcing

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vSkyConf: cloud-assisted multi-party mobile video conferencing

Content Provider ACM Digital Library
Author Li, Bo Lau, Francis C.M. Wu, Yu Wu, Chuan
Abstract As an important application in today's busy world, mobile video conferencing facilitates people's virtual face-to-face communication with friends, families and colleagues, via their mobile devices on the move. However, how to provision high-quality, multi-party video conferencing experiences over mobile devices is still an open challenge. The fundamental reason behind is the lack of computation and communication capacities on the mobile devices, to scale to large conferencing sessions. In this paper, we present vSkyConf, a cloud-assisted mobile video conferencing system to fundamentally improve the quality and scale of multi-party mobile video conferencing. By novelly employing a surrogate virtual machine in the cloud for each mobile user, we allow fully scalable communication among the conference participants via their surrogates, rather than directly. The surrogates exchange conferencing streams among each other, transcode the streams to the most appropriate bit rates, and buffer the streams for the most efficient delivery to the mobile recipients. A fully decentralized algorithm is designed to decide the best paths of streams and the most suitable surrogates for video transcoding along the paths, such that the limited bandwidth is fully utilized to deliver streams of the highest possible quality to the mobile recipients. We also carefully tailor a buffering mechanism on each surrogate to cooperate with efficient stream distribution. We have implemented vSkyConf based on Amazon EC2 and verified the excellent performance of our design, as compared to the widely adopted unicast solutions.
Starting Page 33
Ending Page 38
Page Count 6
File Format PDF
ISBN 9781450321808
DOI 10.1145/2491266.2491273
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2013-08-16
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Cloud computing Video conferencing Mobile computing
Content Type Text
Resource Type Article
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