Consolidated state of the art survey and individual research proposal of ESR2

This document will be used by the ESR2 to state the pillars for deploying the global cognitive solution. This effort will be basic to identify gaps and open problems mainly related to the processing of available collected information, end-to-end objectives to be ensured (QoS, QoT, QoE, etc.), principal elements and functions to be executed in the aimed cognitive system, interaction with the SDN control, etc.