  5G has a main requirement of highly flexible, ultralow latency and ultra-high
bandwidth virtualized infrastructure in order to deliver end-to-end services.
This requirement can be met by efficiently integrating all network segments
(radio access, aggregation and core) with heterogeneous wireless and optical
technologies (5G, mmWave, LTE/LTE-A, Wi-Fi, Ethernet, MPLS, WDM,
software-defined optical transmission, etc.), and massive computing and storage
cloud services (offered in edge/core data centers). This paper introduces the
preliminary architecture aiming at integrating three consolidated and
standalone experimental infrastructures at CTTC, in order to deploy the
required end-to-end top-to-bottom converged infrastructure pointed out above
for testing and developing advanced 5G services.
