An SDN/NFV Based Framework for Management and Deployment of Service Based 5G Core Network

摘要

The traffic explosion and the rising of diverse requirements lead to many challeng-es for traditional mobile network architecture on flexibility, scalability, and deployability. To meet new requirements in the 5G era, service based architecture is introduced into mobile net-works. The monolithic network elements (e.g., MME, PGW, etc.) are split into smaller net-work functions to provide customized services. However, the management and deployment of network functions in service based 5G core net-work are still big challenges. In this paper, we propose a novel management architecture for 5G service based core network based on NFV and SDN. Combined with SDN, NFV and edge computing, the proposed framework can pro-vide distributed and on-demand deployment of network functions, service guaranteed network slicing, flexible orchestration of network func-tions and optimal workload allocation. Simula-tions are conducted to show that the proposed framework and algorithm are effective in terms of reducing network operating cost.