Presenting the ICT-17 5GENESIS project at the EuCNC 2018 in Ljubljana

In EuCNC 2018 in Ljubljana, I had the opportunity to present the ICT-17 5GENESIS project in a special session of the 5G-PPP for the phase 3 projects and as an introduction to the forthcoming ICT-19-2019 call “Advanced 5G validation trials across multiple vertical industries”. 5GENESIS will provide large scale prototype 5G testbeds in five European cities (Athens, Limassol, Malaga, Berlin and Surrey). These testbeds will be used by representatives of relevant business sectors (e.g. media and entertainment, e-health, automotive etc.) to validate the technological advances that 5G brings to these markets.

In this context, the main goal of 5GENESIS will be to validate 5G KPIs for various 5G use cases, in both controlled set-ups and large-scale events. This will be achieved by bringing together results from a considerable number of EU projects as well as the partners’ internal R&D activities in order to realise an integrated End-to-end 5G Facility.

The 5GENESIS Facility, as a whole, will:

  • Implement and verify all evolutions of the 5G standard, via an iterative integration and testing procedure;
  • Engage a wide diversity of technologies and chain innovations that span over all domains, achieving full-stack coverage of the 5G landscape;
  • Unify heterogeneous physical and virtual network elements under a common coordination and openness framework exposed to experimenters from the vertical industries and enabling end-to-end slicing and experiment automation; and
  • Support further experimentation projects, in particular those focused on vertical markets.

The five platforms of the 5GENESIS Facility, and their main features/orientation, are:

  • The Athens Platform. An edge-computing-enabled shared radio infrastructure (gNBs and small cells), with different ranges and overlapping coverage that are supported by an SDN/NFV enabled core, to showcase secure content delivery and low latency applications in large public-events.
  • The Málaga Platform. Automated orchestration and management of different network slices over multiple domains, on top of the 5G NR and fully virtualised core network to showcase mission critical services in the lab and in outdoor deployments.
  • The Limassol Platform. Radio interfaces of different characteristics and capabilities, combining terrestrial and satellite communications, integrated to showcase service continuity and ubiquitous access in underserved areas.
  • The Surrey Platform. Multiple radio access technologies that can support massive Machine Type Communications (mMTC), including 5G NR and NB-IoT, combined under a flexible Radio Resource Management (RRM) and spectrum sharing platform to showcase massive IoT services.
  • The Berlin platform: Ultra dense areas covered by various network deployments, ranging from indoor nodes to nomadic outdoor clusters, coordinated via advanced backhauling technologies to showcase immersive service provisioning.
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SDN ‐ based WiFi ‐ VLC Coupled 5G System

In IEEE WoWMoM 2018 conference, I presented our work on an SDN-based WiFi-VLC Coupled System for Optimised Service Provision in 5G Networks. Visible Light Communication (VLC) is a powerful supplement, which has gained tremendous attention recently and has become a favorable technology in short-range communication scenarios for the Fifth Generation (5G) networks. VLC possesses a number of prominent features to address the highly demanding 5G system requirements for high capacity, high data rate, high spectral efficiency, high energy efficiency, low battery consumption, and low latency. However, this prominent performance is limited by the imperfect reception, since line of sight channel condition may not always exist in practice. The paper presents and experimentally validates a SDN-assisted VLC system, which is coupled with WiFi access technology in order to improve the reliability of VLC system, reassuring zero packet loss reception quality due to misalignment or path obstructions or when the user is moving between two consecutive VLC transmitters and experience “dead coverage zones”.

fig1

The experimental setup of this paper includes an SDN network domain, which is controlled by Ryu controller that is capable of executing python-based SDN apps. The CPE is a laptop equipped with a USB VLC receiver and an Arduino-based luminance detector, placed next to the VLC dongle.

The experimental topology complements the VLC technology with a 2.4GHz WiFi 802.11g access point, which was used in the experiment as a dynamically coupled access technology for the zones that the user has poor reception quality, such as the dead reception zones between two successive VLC transceivers. An SDN app was developed in order to handle the seamless switching of the access technology (i.e. WiFi or VLC) used each time in order to maintain good reception quality.

fig2As it was expected, while the user is moving away from the center of the LED light, the lx value (and respectively the SNR value) is decreasing, which means that the reception quality drops and the http-streaming video service from normal playback is starting to appear occasional pauses. Gradually the lx value reaches to zero as the users is located in a dead reception zone between two successive lamps, where the video service provision is paused/interrupted (packet loss reaches 100%/blue line). The video service playback re-initiates when the user reaches the coverage area of the next VLC transmitter, since all the lamps are broadcasting the same content, and therefore the distance from the next light source is decreasing and therefore the lm value and the SNR value are gradually increasing.

The experiment was repeated placing the CPE at the same distances, but with the SDN controller enabled and the proposed SDN-app active and properly configured. The user requested the HTTP streaming video service and once the service started, she/he started to move from distance equal to zero with step of 30cm, towards the next VLC lamp. When she/he covered a distance of two meters (i.e. at the dead coverage zone between the two lamps), then the packet loss started to increase (as is it observed in the figure above in oragne). Then the SDN-app detected the loss of the ctrl_messages via the VLC channel and once the window of 2 seconds had been completed, the SDN-app instructed via the SDN Controller appropriate Openflow commands to be applied on the OVS switch for diverting the downloading flow to WiFi. The switching process performed seamlessly to the end-user, which resulted in maintaining the video service delivery intact, without any service interruption or quality degradation.

Read the full paper. Available here.

Workshop on User-centric network management and service provisioning

Workshop on User-centric network management and service provisioning

September 17-19, 2018, Barchelona, Spain

(in conjunction with IEEE CAMAD 2018, http://camad2018.ieee-camad.org/)

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Scope and Topics of Interest
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The natural evolution of software and hardware technology, driven by the constantly increasing demands for high-quality communications,
has brought new and innovative advancements like Software Defined Networking (SDN) and Network Functions Virtualization (NFV).
These advancements have not left the mobile telecom sector unaffected. Already, 5G visionaries recognize SDN and NFV as the key enabling
technologies for dynamic and agile networking. More specifically, SDN is used for the decoupling of the control and data plane of a
service-related network flow, while NFV is standardized as the technology that will virtualize storage, computing and networking resource management.
Driven by these advancements, the 5G networks are expected to provide the potential for flexible end-to-end orchestration and slicing, allowing the
automated network configuration and service provision. This automation will enable multiple interacting application components, such as massive IoT
application, Big data analytics and multimedia services to be delivered via multiple access technologies, such as millimeter waves, visual light
communication and others. In this automated environment, the consumers of mobile services are placed for the very first time at the epicenter of any
communication system and access technology in contrast to previous system-centric network designs. The so-called user-centricity is actually so powerful, that terms like
Quality of Experience (QoE) have been coined, driven by the need to understand end users’ degree of satisfaction. In parallel, the main stakeholders
in mobile service provisioning, namely a) the service or content providers, usually referred to as Over-The-Top (OTT) service providers, and b) the
traditional Mobile Network Operators (MNO) promote QoE as the most crucial factor for assessing the network’s, access technology’s and/or application’s
impact on a service in the diverse ecosystem.

This workshop focuses on bringing together researchers from academia, industry and SDOs to identify and discuss technical challenges and novel ideas, regarding a variety of topics, including, but not limited to:

* Human-in-the-loop 5G architectures
* Human-intense 5G communications
* Human-intense network services
* User-centric service and network management
* User experience and perception in SDN/NFV enabled systems
* User-behavior analysis
* User’ perception for interactive security and privacy mechanisms
* SDN/NFV-enabled QoE estimation methodologies and metrics
* SDN/NFV-enabled QoE estimation tools
* QoE-oriented SDN/NFV applications and platforms
* SDN/NFV-related business considerations and economic aspects of QoE
* SDN/NFV-enabled QoE-adaptive algorithms for resource sharing
* QoE-adaptive algorithms for video streaming
* SDN/NFV-based service orchestration
* SDN/NFV-based network deployment and optimisation
* Visual light Communication technologies in the 5G architecture
* Multi-access and multi-radio Access Technologies and Orchestration
* End-to-end orchestration for immersive services
* Big data analytics and machine learning for flexible mobile service steering

The workshop is organized by the research projects CASPER (http://casper-h2020.eu/) and IoRL (http://iorl.5g-ppp.eu/)

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Important Dates
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* Paper Submission Deadline: 31 May 2018
* Author Notification: 2 July 2018
* Camera Ready: 31 July 2018

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Submission Instructions
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Prospective authors are invited to submit a full paper of not more than six (6) IEEE style pages including results,
figures and references. Papers should be submitted via EDAS. Papers submitted to the conference, must describe unpublished
work that has not been submitted for publication elsewhere. All submitted papers will be reviewed by at least three TPC members.
All accepted and presented papers will be included in the conference proceedings and IEEE digital library.

Conference site: http://camad2018.ieee-camad.org/
Workshop Submission Link: https://www.edas.info/newPaper.php?c=24497&track=91100

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Workshop Co-chairs
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Dr. Dimitris Tsolkas, dtsolkas@di.uoa.gr, Dept. of Informatics & Telecommunications University of Athens, Greece
Dr. Harilaos Koumaras, koumaras@iit.demokritos.gr, Institute of Informatics and Telecommunications NCSR Demokritos, Greece