A survey of live migration in virtual network environment (VNE)

As the number of services and users in Internet Protocol Multimedia Subsystem (IMS) keeps increasing, network virtualization seems to be a good alternative for Mobile Virtual Network Operators (MVNOs) in order to provide better services to customers and save cost and time. As a matter of fact, it offers better performances in terms of resource management and automatic allocation. Furthermore, when an overload occurs in one of the Virtual Machine (VM), live migration is needed. This latter has to take into account the resource availability in the host VM and tend to load balance the nodes and connections. In this paper, we will present the challenges and techniques of live migration in VNE.