University of Bordeaux Bordeaux

Artigues-près-Bordeaux, France

University of Bordeaux Bordeaux

Artigues-près-Bordeaux, France
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Ahmed T.,University of Bordeaux Bordeaux | Ferrus R.,Polytechnic University of Catalonia | Fedrizzi R.,Center for Research and Telecommunication Experimentation for Networked Communities | Sallent O.,Polytechnic University of Catalonia
2017 IEEE International Conference on Communications Workshops, ICC Workshops 2017 | Year: 2017

Key features of satellite communications such as wide-scale coverage, broadcast/multicast support and high availability, together with significant amounts of new satellite capacity coming online, anticipate new opportunities for satellite communications services as an integral part within upcoming 5G systems. To materialize these opportunities, satellite communications services have to be provisioned and operated in a more flexible, agile and cost-effective manner than done today. In this context, this paper describes the architecture of a satellite ground segment system that is built on the introduction of Software Defined Networking (SDN) and Network Function Virtualization (NFV) technologies and examines the use case for delivering a Satellite Bandwidth on Demand (BoD) solution. © 2017 IEEE.


Riggio R.,CREATE-NET | Bradai A.,University of Poitiers | Harutyunyan D.,CREATE-NET | Rasheed T.,CREATE-NET | Ahmed T.,University of Bordeaux Bordeaux
IEEE Transactions on Network and Service Management | Year: 2016

Network function virtualization (NFV) sits firmly on the networking evolutionary path. By migrating network functions from dedicated devices to general purpose computing platforms, NFV can help reduce the cost to deploy and operate large IT infrastructures. In particular, NFV is expected to play a pivotal role in mobile networks where significant cost reductions can be obtained by dynamically deploying and scaling virtual network functions (VNFs) in the core network. However, in order to achieve its full potential, NFV needs to extend its reach also to the radio access segment. Here, mobile virtual network operators shall be allowed to request radio access VNFs with custom resource allocation solutions. Such a requirement raises several challenges in terms of performance isolation and resource provisioning. In this work, we formalize the wireless VNF placement problem in the radio access network as an integer linear programming problem and we propose a VNF placement heuristic, named wireless network embedding (WiNE), to solve the problem. Moreover, we present a proof-of-concept implementation of an NFV management and orchestration framework for enterprise WLANs. The proposed architecture builds on a programmable network fabric where pure forwarding nodes are mixed with radio and packet processing capable nodes. © 2004-2012 IEEE.

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