QoE-aware Elasticity Support in Cloud-Native 5G Systems

Typically, maintaining static pool of cloud resources to meet peak requirements with good service quality makes the cloud infrastructure costly. To cope with this, this paper proposes an approach that enables a cloud-infrastructure to automatically and dynamically scale-up or scale-down resources of a virtualized environment aiming for efficient resource utilization and improved quality of experience (QoE) of the offered services. The QoE-aware approach ensures a truly elastic infrastructure, capable of handling sudden load surges while reducing resource and management costs. The paper also discusses the applicability of the proposed approach within the ETSI NFV MANO framework for cloud-based 5G mobile systems.