Abstract
5G envisages a “hyper-connected society,” where an enormous number of devices are inter-connected anywhere and at any time. Cloud-enabled radio access networks (RANs) where intelligence is placed in conjunction with the radio heads at the proximity of end users are a promising solution to fulfill the 5G expectations of sub-millisecond latency, huge traffic volumes, and higher data rates. Network functions virtualization (NFV) and software-defined networking (SDN) developments enable end users to access advanced features, such as configurability, automation, scalability, improved resource utilization, and multi tenancy over the cloud-enabled RANs. Management and orchestration techniques are the ultimate factor that determines the effectiveness of the novel SDN/NFV features being introduced. Our focus in this letter is the resource allocation in a realistic cloud-enabled RAN, taking into account the dynamics of ~100,000 persons movement in a crowded event, i.e., a football match. The proposed solution jointly orchestrates NFV and bandwidth resources, as one resource affects the other. Simulation results clearly verify the benefits of the proposed solution over traditional disjoint schemes.
Highlights
European 5G PPP [2] has set a direction, aiming to significantly improve the technology level towards higher throughputs and flexibilities
Efforts done at the 5G PPP so far have led to solutions able to preliminary demonstrate some 5G Key Performance Indicators (KPIs) such as higher radio coverage, more bandwidth per mobile device, increased number of connected devices, logical network slicing, lower latency and cost/energy savings
In this paper we will show how a holistic and joint decision making process is able to significantly improve the network performance compared to a case where only Network Functions Virtualization (NFV) or network related actions are employed
Summary
European 5G PPP [2] has set a direction, aiming to significantly improve the technology level towards higher throughputs and flexibilities. With the help of NFV and SDN, the embedded IT resources at the network are employed to offer added value services, e.g. innovative media services, aiming to improve the end user’s Quality of Experience (QoE) and creating new business opportunities for service providers. In this paper we will show how a holistic and joint decision making process is able to significantly improve the network performance compared to a case where only NFV or network related actions are employed. To this end, we selected a real life two tier network topology made of so called “micro nodes” – close to the end user – and “macro nodes” – far from the end user. With the help of simulations results generated by our Net2Plan [10][11] tool, we will prove that the proposed joint NFV-network management solution will significantly outperform the disjoint alternatives
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