Revised virtual resources allocation scheme in network function virtualization (NFV) enabled networks

Abstract

Network function virtualization (NFV) is a technology that abstracts all types of resources needed for networking and enables automatic management and control of network services by software. With the introduction of NFV technology, telecom operators want to gain the benefits and efficiency of increasingly complex network manageability, reduced administrative costs, and network agility. One of the most important considerations in NFV deployment is how to allocate the virtual resources that are needed to provide flexible virtual network services in an NFV-based network infrastructure. Thus, the most important prerequisite for NFV deployment is achieved fast, scalable and dynamic composition and allocation of networks functions (NFs) to implement network services (NSs). In this paper, we proposed a revised on-line RA algorithm that integrates embedding and scheduling of virtual network functions (VNFs) simultaneously.