دانلود رایگان مقاله انگلیسی مجازی سازی و هماهنگ سازی یک شبکه هسته ای بسته 5G - نشریه IEEE 2017

Abstract

In this paper, the design, construction, and testing of a fully-functional virtualised mobile core network is outlined. Lessons learned and recommendations for future improvements are provided. The presented work uses open-source software for virtual network function infrastructure control (OpenStack), network flow programming (OpenDaylight), and network orchestration (OpenBaton) to virtualise a commercial software evolved packet core solution deployed on common off-the-shelf hardware. The findings presented in this paper prove the concept of function virtualisation for mobile networks, and paves the way towards future mobile core network function flexibility as required for 5G networks. The paper provides researchers and network operators with first-hand experience to help build similar virtual mobile network infrastructures, and highlights the challenges to tackle and the issues to address to harness the power of virtualisation in 5G networks.

VII. CONCLUSION

This paper presents one of the first realisations of a fullyvirtualised 5G mobile core network; the core network functions are software instances running on common off-the-shelf server blades. This core is based on a clustered and distributed cloud network architecture, having the key tenets of a 5G mobile networks; control and user plane separation, collapse of GTP tunnels, and distribution of core network functionalities. Building the NFV infrastructure proved to require substantial effort: the FOSS model for NFV, SDN and orchestration components providing insufficient support and documentation for the commercial telecoms market with a number of technical issues. Compared to current hardware implementations, setting up new core functions can be achieved in less than 10 mins. Collective effort to address and improve some of the technical challenges is required to speed adoption of this promising technology.