Cache-enabled Software Defined Heterogeneous Networks for Green and Flexible 5G Networks

Software-Defined 5G Networks: Challenges, and Technologies

The commoditization of key processing components coupled with virtualization of infrastructure functions will lead to a radical change in the economics of mobile networks. The latter will help network providers (e.g., MNO, MVNO) move from proprietary hardware and software platforms towards open and flexible cellular systems based on general-purpose cloud infrastructures. In this context, 5G sys...

Software-Defined Wireless Transport Networks for Flexible Mobile Backhaul in 5G Systems

Traditionally microwave backhaul has been configured and operated in a static manner by means of vendor specific management systems. This mode of operation will be difficult to adapt to the new challenges originated by 5G networks. New mechanisms for adaptation and flexibility are required also in this network segment. The usage of a signaled control plane solution (based on OpenFlow) will faci...

Real-Time Prototyping of 5G Software- Defined Networks: Part 3

Dynamic Joint Uplink and Downlink Optimization for Uplink and Downlink Decoupling-Enabled 5G Heterogeneous Networks

The concept of user-centric and personalized service in the fifth generation (5G) mobile networks encourages technical solutions such as dynamic asymmetric uplink/downlink resource allocation and elastic association of cells to users with decoupled uplink and downlink (DeUD) access. In this paper we develop a joint uplink and downlink optimization algorithm for DeUD-enabled wireless networks fo...

Software-Defined Fragmentation-Aware Elastic Optical Networks Enabled by OpenFlow

We present a software-defined fragmentation-aware elastic optical network, in which an extended OpenFlow-based control plane intelligently routes connection requests to avoid spectrum fragmentation. The overall feasibility and efficiency of the proposed scenario is validated by using both numerical simulation and experimental demonstration. Introduction Optical networks are evolving from a fixe...