Whilst broadband Internet connectivity has become highly important, providing broadband connectivity nonetheless remains a considerable challenge, particularly in rural and remote regions where the deployment of optical fibers faces economical obstacles. A promising option to address this issue is that of the most recent satellite systems, capable of providing high capacities virtually everywhere. However, compared to most terrestrial systems, satellite networks have very different link and, more importantly, latency characteristics, which often render them only barely usable for delay intolerant traffic. Thus, convergence of terrestrial and satellite networks is required, so that only certain traffic flows can be offloaded onto a supplemental satellite connection. In this work, we propose a network architecture relying on modern Software Defined Network (SDN) concepts, which enable dynamic traffic offloading in a converged satellite and terrestrial network, in order to relieve the load in a narrowband terrestrial network. We show that with limited overhead, a traffic can be offloaded, leading to an increase in the user's Quality-of-Experience (QoE).
Mobile terminal receivers with unidirectional network interfaces are not considered as a special case in the standardization of Mobile IPv6. For the interaction of unidirectional access technologies (DVB-H, DVB-T) and mobile networks (UMTS, WLAN, WIMAX) in heterogeneous IPv6 environment, there is a challenge for unified mobility and QoS management technologies supporting new interactive broadcast services, such as IP Datacast. This paper discusses protocol enhancements of Mobile IPv6 in order to support interactive QoS based multimedia services in hybrid broadcast and mobile IPv6 environment. Interaction of the Link Layer Tunnelling Mechanisms (RFC 3077) with the Mobile IPv6 and Fast Handovers based on "reverse tunnelling info" is used to provide uniform handover support for broadcast and mobile IP services. QoS management for broadcast access Internet network environment is proposed based on resource reservations for the two directions - downstream connection of the un idirectional broadcast network and return tunnel using wireless access network. QoS information base describing the capabilities of the unidirectional access networks and the IP return tunnel network ("feed") is used for enhanced QoS support of interactive services
The scope of this paper is to introduce an innovative paradigm for cognitive self-managed elements of the Future Internet. The present Internet model is based on clear separation of concerns between protocol layers, with intelligence moved to the edges, and with the existent protocol pool targeting user and control plane operations with less emphasis on management tasks. Future Internet shall be engineered based on cognitive behavior with a high degree of autonomy, by proposing the operation of selfmanaged Future Internet elements around a novel hierarchical feedback-control cycle. The concepts are based on a hierarchical Distributed Cognitive cycle for System & Network Management (DC-SNM) which aims at facilitating the promotion of distributed management. The management approach encompasses a hierarchical distribution of cognitive cycles, breaking down the execution and decision making levels to (autonomic) network elements, network domain types and up to the service provider realm in order to address management, dynamic organization and (re)configuration of future internet elements.
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