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IMS has been widely recognized as the control and signaling framework for delivering of the rich communication and multimedia services to the broadband users. Amongst others, it is deployable as the service (middleware) platform for the interactive and personalized IPTV services. The goal of this paper is to provide an investigation of the advanced use(More)
ICT is currently responsible for 4% of the EU's carbon emission. In this industry, data centers are growing quickly to supply the escalating services and application demands. The design of high performance and energy-efficient data center networks is an important issue while still being confronted with many challenges such as scalability, reliability, etc.(More)
Modern wireless networks, such as WiMAX or LTE are using OFDM/OFDMA as the enabling technologies for broadband transmission in cellular environments with QoS capabilities. In these networks, such schema as radio resource management, admission control, scheduling are essential. In this article we firstly introduce a Time-Frequency Burst Mapping algorithm for(More)
This article presents the architecture design and experimental evaluation of a QoE-aware flexible-QoS-control next-generation IPTV network. The architecture extends the IMS service control functionality by providing an efficient application-specific service control approach based on user satisfaction on the connectivity. The validation NGN testbed uses(More)
IMS-based IPTV is the next generation IPTV architecture that makes use of the advanced NGN functionalities to provide novel, interactive and blending IPTV services. It can also facilitate QoS guarantee based on the existing IMS service control capabilities. In the article, we propose a new architecture and the corresponding mechanisms to extend the service(More)
Dynamic virtual network allocation algorithms have emerged as a powerful way to control traffic and virtual link capacity for the popular multi-tenant data center. Unfortunately, the existing dynamic virtual network allocation algorithms are either suboptimal or inapplicable to cloud resident data center, which is a promising OpenFlow based multi-tenant(More)
One considerable challenge in future heterogeneous wireless networks (HetNet) is vertical handover. Current vertical handover approaches almost focus on resolving two questions: (1) when a Mobile Station (MS) needs to carry out a vertical handover (VHO) procedure; and (2) how a proper handover decision can be made in a HetNet environment. Actually, some(More)