Packet optical mobile backhauling
This solution aims at providing a multi-layer aggregation network combining both packet and optical switching for the seamlessly transport of packet flows originated at mobile and fixed access networks. In particular for the mobile traffic services, cells site gateways equipped with Ethernet interfaces are located at the base stations (e.g., LTE eNodeBs). These in turn are connected via an optical access network (either point-to-point links or PON trees) to the aggregation network. This constitutes the so-called mobile backhaul responsible to efficiently aggregating and transporting (mobile) data traffic towards the network controllers and gateways (e.g., LTE EPC) as well as dealing with stringent QoS requirements in terms of bit-rate, delay, recovery, etc.
The establishment of packet connections within the aggregation network for transporting mobile data traffic (e.g., EPS bearers) is automatically performed by a unified control plane. To efficiently deal with this, the control plane entities handling the configuration of the packet and optical switches and the setting up of the mobile services (i.e., between base stations and mobile controller and gateways) need to be coordinated. This can be achieved leveraging the SDN controller and NFV concepts. Thereby, the ultimate goal is to develop a common control framework to dynamically manage the aggregation network segment aiming at ensuring the QoS levels demanded by the mobile services and achieving optimal network resource utilization.