Page 121 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 3

including evaluation of novel RAN functional splits (5GPPP Flex5Gware), mobile layer and transport network
layer integration towards an integrated end-to-end network control, or mobile network layer virtual network
function deployment (e.g., vEPC) (FP7 COMBO).

EXTREME Testbed
The EXTREME Testbed (EXperimental Testbed for Research on Mobile nEtworks)
(http://networks.cttc.cat/mobile-networks/extreme_testbed/) constitutes an experimentation platform
that is continuously enhanced and extended with state-of-the-art network management tools, prototyping
tools and communication technologies. It can be thought of as a meta-testbed, as it provides a framework
for fast deployment of proof-of-concepts. More specifically, its goal is to deploy and run experiments as close
as possible to the way one runs simulations. It features a series of administrative and experimentation tools
for experiment execution and control over a generic purpose NFV-oriented infrastructure. It features a series
of general purpose nodes that can be configured as network nodes or data center servers. Host and guest
operating systems can be dynamically loaded to adapt to the need of a given experiment. Integration of
OpenStack as virtual infrastructure manager and various flavors of SDN frameworks (e.g., OpenDaylight, Ryu)
enables evaluating all sorts of SDN-NFV integration scenarios.

In addition of the generic framework, it also enables the design and integration of more targeted testbeds.
For instance, a heterogeneous 802.11ac and millimeter wave mesh network is deployed at the CTTC premises
to evaluate an SDN/NFV-managed all-wireless transport network and joint RAN and transport orchestration.
Given the distributed computing power deployed throughout the building, this testbed can also be seen as a
distributed cloud testbed. Therefore, NFV and MEC use cases are being deployed over this testbed, which
will allow evaluating the availability and reliability of these deployments.
Integration with other CTTC research tools and testbeds, such as LENA or the optical networking ADRENALINE
Testbed®, as done in projects like FP7 COMBO and 5GPPP 5G-Crosshaul also enables the creation of end-to-
end IT and network infrastructures featuring optical and wireless technologies, mobile network layer and
transport network layer, and access, aggregation, and core segments. All this orchestrated based on SDN/NFV
principles.

GEDOMIS Testbed
The GEDOMIS® testbed (http://technologies.cttc.es/phycom/gedomis/) is an ideal platform to develop, test
and validate the PHY-layer of modern wireless communication systems covering the prototyping and
verification requirements of advanced solutions that target base stations, smart antennas, MIMO systems,
Software-Defined Radio (SDR), geolocation, cognitive radio and high-speed test and measurement
campaigns. In the past it has been used to develop and test real-time systems based on the IEEE 802.11, IEEE
802.16 and 3GPP rel. 9 standards. GEDOMIS® is able to host PHY-layer prototypes of multi BSs and multi User
®
Equipments (UEs). GEDOMIS has been used in the past in numerous occasions to implement, test and
validate the PHY-layer of various wireless communication systems. The implemented R&D projects were
funded either through public competitive calls (at regional, national or European-level) or from direct
contract with industrial players. It is worth to lay particular emphasis on two of them, due to their demanding
and challenging development and verification cycle. Likewise it is demonstrated the upper bounds
®
capabilities of the use-cases that can be implemented and tested in GEDOMIS .

CASTLE Testbed
CASTLE is a tool for researchers and industry to test, play and develop over different standards, directly from
the cloud, remotely and without installing any software or requiring dedicated hardware. With CASTLE, it is
possible to transmit and receive waveforms of different standards over the air and process them locally or
remotely. CASTLE is offered as licensed service (free, trial or paid) to CTTC staff or industrial partners via
licensing system. CASTLE aims to be the tool where the researchers can develop their own algorithms without
the need to implement, modify or extend the standard. CASTLE does it for them. CASTLE provides primitives
that interface with different procedures. Researchers can use from top level primitives (such as waveform
generation) to bottom level primitives (such as modulators). First, researchers construct their particular
scenarios, generate and process waveforms, obtain metrics and analyze results. Researchers do not have

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