We have proposed, evaluated and demonstrated a prototype of the HYDRA architecture which allows both fixed and wireless operators to share a common physical infrastructure. Making use of a technology-agnostic last-drop scheme, that is offering to operators the chance to provide broadband at truly low CapEx/OpEx, we are leveraging NFV to allow executing complex application with stringent latency requirement close to the end-user. Moreover, the exploitation of SDN using open-software (like OpenFlow) to control and orchestrate this platform allows the seamless operation and integration of heterogeneous access systems and networks.
Last, but not least, we have developed an extensive knowledge in modelling and developing Passive Optical Network (PON) sub-systems; a knowledge gained by participating for over 20 years in EU and national research projects.
The shift of economic activity to data-intensive methods mandates the convergence of Datacentres and Telecom infrastructure. We have developed Datacentre architectural solutions where optics are deeply penetrating the interconnection fabric in a quest to minimize the role of electronic switching, which is replaced with Passive Optical Network systems. In this way a reduction to CapEx/OpEx is obtained, while alleviating the currently saturated Spine-and-Leaf architectures. Our solution is exploiting transmission and passive multiplexing avoiding the remedies associated with still immature optical packet systems.
We have proposed the CANON architecture that extends a pioneering approach on dynamic Metropolitan networks developed in the EU project DAVID, where we participated, to the case of partially meshed Core networks or National backbone networks, and have evaluated its performance for a number of national European networks. Finally, we have contributed to pioneering research projects in the topic of Elastic Optical Networks (EON).
We have acquired an extensive experience in designing optical links and end-to-end transparent or translucent optical networks exploiting a wide variety of system technologies and network topologies including: realistic Metropolitan Networks, Core networks of major European Operators, fixed-grid (NRZ) systems, Elastic Optical Networks with a variety of modulation formats, modelling of physical layer impairments and their impact in system performance, optical node configurations offering diverse functionality to serve Optical Circuit and Packet/Slot systems. We have at our disposal physical layer simulation tools and a design methodology that has been extensively tested and validated in industry and a great number of research projects.
The benchmarking may range from end-to-end network functionality, to network (QoS) performance to physical layer performance or any combination of them.
As such, we are preparing several of our software systems for release.
We are currently working on the METRO-HAUL project.
The aim of this project is to design and build a smart optical metro infrastructure able to support traffic originating from heterogeneous 5G access networks, addressing the anticipated capacity increase and its specific characteristics, e.g., mobility, low latency, low jitter etc. This infrastructure will also support a wide variety of services and use cases with special emphasis on services from various industries vertical to the ICT.
OopenLightComm is involved in node design for a filterless transport metro network, including the corresponding software control interfaces based on open s/w and the assessment of the end-to-end physical layer performance of the filterless configuration for the Metro network.
E. Kosmatos, C. Matrakidis, D. Uzunidis, A. Stavdas, S. Ηorlitz, T. Pfeiffer and A. Lord, "Architectural Foundation and Control-Plane Integration of a Novel Metro-Access, Cloud-Integrated, Node," European Conference on Optical Communication (ECOC), Dublin, 23-26 Sept. 2019
D. Uzunidis, E. Kosmatos, C. Matrakidis, A. Stavdas and A. Lord, "DuFiNet: Architectural Considerations and Physical Layer Studies of an Agile and Cost-Effective Metropolitan Area Network," Journal of Lightwave Technology, vol. 37, no. 3, pp. 808-814, 1 Feb. 2019
E. Kosmetos, C. Matrakidis, A. Stavdas, S. Horlitz, T. Pfeiffer and A. Lord, "A Dynamic Transportation Platform for Metropolitan Networks Exploiting PON Technology and a Novel Control-Plane," European Conference on Optical Communication (ECOC), Rome, 2018
E. Kosmetos, C. Matrakidis, A. Stevdas and T. Orfanoudakis, "An SDN Architecture for PON Networks Enabling Unified Management Using Abstractions," European Conference on Optical Communication (ECOC), Rome, 2018
D. Uzunidis, C. Matrakidis, A. Stavdas and A. Lord, "DuFiNet: A Flexible, High-Capacity and Cost-Effective Solution for Metropolitan Area Networks," European Conference on Optical Communication (ECOC), Rome, 2018
C. Matrakidis and I. Tomkos, "On the Performance Improvement and Cost Effectiveness Resulting from the Placement of Novel Architectures of Interconnected Transponders in Elastic Optical Networks," European Conference on Optical Communication (ECOC), Gothenburg, 2017
C. Matrakidis, T. Orphanoudakis, A. Stavdas, J.P. Fernandez-Palacios Gimenez, A. Manzalini, "HYDRA: A Scalable Ultra Long Reach/High Capacity Access Network Architecture Featuring Lower Cost and Power Consumption," Journal of Lightwave Technology, vol. 33, no. 2, pp. 339-348, 15 Jan. 2015
C. Matrakidis, T. Orphanoudakis, A. Stavdas, A. Lord, "Network optimization exploiting traffic grooming techniques under fixed and elastic spectrum allocation," European Conference on Optical Communication (ECOC), 21-25 Sept. 2014
E. Kosmatos, T. Orphanoudakis, C. Matrakidis, A. Stavdas, A. Lord, "Switchless elastic rate node (SERANO) architecture for flexgrid and elastic rate networks," European Conference on Optical Communication (ECOC), 21-25 Sept. 2014
A. Stavdas, C. Matrakidis, C.(T.) Politi, T. Orphanoudakis, J. Dunne, "A novel architecture for highly virtualised software-defined optical clouds," European Conference on Optical Communication (ECOC), 22-26 Sept. 2013
A. Stavdas, A. Bianco, A. Pattavina, C. Raffaelli, C. Matrakidis, C. Piglione, C.(T.) Politi, M. Savi, R. Zanzottera, "Performance evaluation of large capacity broadcast-and-select optical crossconnects," Optical Switching and Networking, vol. 9, no. 1, pp. 13-24, Jan. 2012
A. Stavdas, T. Orphanoudakis, H.C. Leligou, K. Kanonakis, C. Matrakidis, A. Drakos, J.D. Angelopoulos, A. Lord, "Dynamic CANON: a scalable multidomain core network," IEEE Communications Magazine, vol. 46, no. 6, pp. 138-144, June 2008
A. Stavdas, S. Sygletos, M. O'Mahoney, H.L. Lee, C. Matrakidis, A. Dupas, "IST-DAVID: concept presentation and physical layer modeling of the metropolitan area network," Journal of Lightwave Technology, vol. 21, no. 2, pp. 372-383, Feb. 2003
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