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NFV and SDN for fronthaul-based systems

NFV and SDN for fronthaul-based systems

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The trend to employ softwarisation in order to introduce virtualisation of network functions in the mobile core is driven by the increasing need for flexible configuration and operation of the network. Such needs are stipulated by the wide and dynamic requirements of new services that next-to-come fifth generation (5G) of mobile networks will be supporting. Traditional hardware-based network deployments would incur high capital and operation expenditures (CAPEX and OPEX, respectively) as a result of network expansion or modification requiring hardware addition or replacement. Flexibility is thus one of the key drivers in the design of 5G networks in order to support the heterogeneous requirements of all 5G applications, and to enable multiple network embodiments within one single network deployment.

Chapter Contents:

  • 10.1 Introduction
  • 10.2 Background: NFV and SDN in research and standardisation
  • 10.2.1 Network functions virtualisation (NFV)
  • 10.2.2 Software Defined Networking
  • 10.2.3 Standardisation activities
  • 10.3 NFV: Virtualisation of C-RAN network functions
  • 10.3.1 Virtualisation as a flexible C-RAN enabler
  • 10.3.2 Virtualisation of the network functions
  • 10.4 SDN: Towards enhanced SON
  • 10.4.1 C/U-plane decoupling in the mobile network
  • 10.4.2 Software defined RAN controller
  • 10.4.3 Controlled network operations in C-RAN
  • 10.5 Conclusions
  • References

Inspec keywords: 5G mobile communication; virtualisation; software defined networking

Other keywords: fifth generation mobile network; fronthaul-based system; mobile core; SDN; NFV; network function virtualisation

Subjects: Computer communications; Computer networks and techniques; Mobile radio systems

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