Abstract
AbstractIn this work, an applicable model enabling IPTV service providers to use a virtual network (VN) for IPTV service delivery is designed. The current topologies used in backbone or IP overlay-based content networks to deliver IPTV services cannot be directly applied as VNTs since virtual node, link, or video source failure on those topologies will cause service interruptions for customers. Therefore, in this work, a more reliable virtual network topology for solving a single virtual node, virtual link, or video server failure problem is designed. A novel optimization objective and an efficient VN construction algorithm have been developed for building the proposed topology. Various simulations were conducted to verify the effectiveness of the proposed VNT as well as the associated construction algorithms in terms of reliability and efficiency.KeywordsIPTV service deliveryvirtual network topologyVN allocationVN node or link failure
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