5G-Crosshaul: Towards a Unified Data-Plane for 5G Transport Networks

The increasing stress on mobi le radio access performance in a context of declining revenues for operators is requiring the evolution of transport networks (backhaul and fronthaul), which currently work decoupled. The heterogeneity of the nodes and transmission technologies inter-connecting the fronthaul and backhaul segments makes the network quite complex, costly and inefficient to manage flexibly and dynamically. In order to meet 5G requirements in a cost-effective manner, 5G-Crosshaul is designing a 5G transport network that unifies the data, control, and management planes . This paper presents one of the main concepts proposed within 5G-Crosshaul project, a novel multi-layer switch architecture that enables the multiplexing of fronthaul and backhaul traffic within the same transport network to achieve the proposed unified data-plane.