NDLI: Applying NFV and SDN to LTE mobile core gateways, the functions placement problem

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Applying NFV and SDN to LTE mobile core gateways, the functions placement problem

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Applying NFV and SDN to LTE mobile core gateways, the functions placement problem

Content Provider	ACM Digital Library
Author	Morper, Hans Jochen Basta, Arsany Hoffmann, Klaus Kellerer, Wolfgang Hoffmann, Marco
Abstract	With the rapid growth of user data, service innovation, and the persistent necessity to reduce costs, today's mobile operators are faced with severe challenges. In networking, two new concepts have emerged aiming at cost reduction, increase of network scalability and service flexibility, namely Network Functions Virtualization (NFV) and Software Defined Networking (SDN). NFV proposes to run the mobile network functions as software instances on commodity servers or datacenters (DC), while SDN supports a decomposition of the mobile network into control-plane and data-plane functions. Whereas these new concepts are considered as very promising drivers to design cost efficient mobile network architectures, limited attention has been drawn to the network load and infringed data-plane delay imposed by introducing NFV or SDN. We argue that within a widely-spanned mobile network, there is in fact a high potential to combine both concepts. Taking load and delay into account, there will be areas of the mobile network rather benefiting from an NFV deployment with all functions virtualized, while for other areas, an SDN deployment with functions decomposition is more advantageous. We refer to this problem as the functions placement problem. We propose a model that resolves the functions placement and aims at minimizing the transport network load overhead against several parameters such as data-plane delay, number of potential datacenters and SDN control overhead. We illustrate our proposed concept along with a concrete use case example.
Starting Page	33
Ending Page	38
Page Count	6
File Format	PDF
ISBN	9781450329903
DOI	10.1145/2627585.2627592
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-08-22
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Lte mobile core gateways Datacenters Sdn Nfv
Content Type	Text
Resource Type	Article

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