"Service overlay network (SON) provides an effective means to deploy quality of service (QoS)-guaranteed live streaming over today's Internet. A major challenge in designing such a network is dealing with resource sharing among multiple channels," scientists in Xi'an, People's Republic of China report.
"To achieve the best overall QoS in SON, we devise a new multi-channel live streaming scheme. First, we propose a multi-tree construction algorithm by infrastructure-based overlay multicast. The algorithm employs pre-allocated session degree constraints in overlay nodes to reserve resources for multiple channels, and constructs multiple trees by considering the total resource utilization of overlay nodes. Second, we propose a tree-aware queue scheduling algorithm to reduce the overlay processing delay in view of the entire overlay network. Scheduling priority is identified to trade off session priority with node location in different trees," wrote W.Z. Zhang and colleagues.
The researchers concluded: "From simulation and experimental results, the scheme achieves a differentiated control among different sessions, provides load balancing among overlay nodes, and improves the delay performance on SON."
Zhang and colleagues published their study in Multimedia Tools and Applications (Multi-channel live streaming in service overlay network. Multimedia Tools and Applications, 2011;53(1):97-117).
For more information, contact W.Z. Zhang, Xi An Jiao Tong University, MOE KLINNS Laboratory, Xian 710049, People's Republic of China.
Publisher contact information for the journal Multimedia Tools and Applications is: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands.
Keywords: City:Xi'an, Country:People's Republic of China, Region:Asia, Algorithms, Mathematics
This article was prepared by Journal of Mathematics editors from staff and other reports. Copyright 2011, Journal of Mathematics via VerticalNews.com.
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