A5056825446- Software-Defined Networks and 5G
- Advanced Optical Network Technologies
- Advanced MIMO Systems Optimization
- IoT and Edge/Fog Computing
- Advanced Wireless Communication Technologies
- Cooperative Communication and Network Coding
- Advanced Photonic Communication Systems
- Network Traffic and Congestion Control
- Optical Network Technologies
- Telecommunications and Broadcasting Technologies
- Caching and Content Delivery
- Mobile Agent-Based Network Management
- Smart Grid Energy Management
- Advanced Computing and Algorithms
- Wireless Networks and Protocols
- Image and Video Quality Assessment
- Interconnection Networks and Systems
- Advanced Wireless Network Optimization
- Smart Grid Security and Resilience
- IoT Networks and Protocols
- Software System Performance and Reliability
- Spam and Phishing Detection
- Network Security and Intrusion Detection
- Opportunistic and Delay-Tolerant Networks
- Millimeter-Wave Propagation and Modeling
Iquadrat (Spain)
2016-2025
Centre Tecnologic de Telecomunicacions de Catalunya
2021
University of South Wales
2021
National and Kapodistrian University of Athens
2021
Syracuse University
2021
Instituto de Telecomunicações
2021
Qatar University
2021
University of Patras
2006-2014
Research Academic Computer Technology Institute
2007-2012
The upcoming fifth generation (5G) mobile communications urge software-defined networks (SDNs) and network function virtualization (NFV) to join forces with the multiaccess edge computing (MEC) cause. Thus, reduced latency increased capacity at of can be achieved, satisfy requirements Internet Things (IoT) ecosystem. If not properly orchestrated, flexibility virtual functions (VNFs) incorporation, in terms deployment lifecycle management, may cause serious issues NFV scheme. As service level...
As industries are under pressure for shorter business and product life cycles, there is an extensive effort from the research community novel profitable automation processes. This has given rise to fifth-generation (5G) Tactile Internet, which characterized by extremely low latency communication in combination with high availability, reliability, security. In this paper, we discuss key technologies support Internet characteristics industrial environments then showcase implementation of a 5G...
Sixth-generation (6G) systems are expected to inaugurate the era of massive and extremely heterogeneous network slicing, where tenancy would be extended final consumer with proliferation advanced diverse digital services. This introduces significant challenges management orchestration in terms scalability sustainability. article starts by elaborating on architectural artificial-in-telligence-based algorithmic designs achieve energy efficiency (EE) 6G, as well analyzing their trade-offs. The...
This research introduces an advanced Explainable Artificial Intelligence (XAI) framework designed to elucidate the decision-making processes of Deep Reinforcement Learning (DRL) agents in ORAN architectures. By offering network-oriented explanations, proposed scheme addresses critical challenge understanding and optimizing control actions DRL for resource management allocation. Traditional methods, both model-agnostic model-specific approaches, fail address unique challenges presented by XAI...
The upcoming fifth generation (5G) of mobile communications brings new paradigms, such as network slicing and automation, to the forefront. Cloud computing function virtualization (NFV) constitute two fundamental key enablers towards implementation these paradigms. On one hand, computational functionalities are no longer limited distant servers, but they coming closer end user through Multi-access Edge Computing (MEC) technology, thus creating a multi-tier cloud architecture in modern...
Future mobile networks will offer high data rates based on high-capacity fronthaul. Current fronthaul design has two main components that communicate via the common public radio interface and fiber links, i.e., remote units (RUs) implement simple signal processing centralized baseband (CBBUs) in power-consuming centers perform complex network functions. Various functional splits between CBBUs RUs are feasible, inducing trade-offs centralization gains bandwidth demands. This lacks capacity...
This paper describes in detail the design of a 5G platform based on C-RAN architecture, with fully virtualized Radio Access Network (RAN) and an optical/wireless Fronthaul. The wireless optical domains are controlled by hierarchy Software Defined Networking (SDN) controllers, which responsible for end-to-end optimization platform, including Fronthaul air interfaces. proposed architecture adopts modular eNodeB (eNB) design, where BBU RRH entities implemented Commercial Off-Τhe-Shelf (COTS)...
The evolution of Software-Defined Networking (SDN) and Network Function Virtualization (NFV) in the telecommunications industry have intensified issues network management at large scales. Dynamic service orchestration adaptive resource allocation became a necessity for operators to manage rapid growth users data-intensive applications. impact automation on energy consumption overall operating costs is often overlooked. Guaranteeing strict performance constraints Ultra-Reliable Low Latency...
One of the most crucial challenges for global socio-technical domain nowadays is support unprecedented use cases a variety applications such as augmented reality, 3D holographic telepresence, Industry 4.0, robotics, e-health, and pervasive connectivity. In this environment, beyond 5G intelligent networks that are able to provide enhanced flexibility through dynamic allocation system's resources, while realizing perceived zero-latency vision, envisioned ensure smooth transition toward 6G. The...
The Internet of Things (IoT) ecosystem, as fostered by fifth generation (5G) applications, demands a highly available network infrastructure. In particular, the Vehicles use cases, subset overall IoT environment, require combination high availability and low latency in big volume support. This can be enabled function virtualization architecture that is able to provide resources wherever whenever needed, from core edge up end user proximity, accordance with fog computing paradigm. this...
Next generation networks, as the Internet of Things (IoT), aim to create open and global networks for connecting smart objects, network elements, applications, web services end-users. Research industry attempt integrate this evolving technology exponential growth IoT by overcoming significant hurdles such dynamicity, scalability, heterogeneity end-to-end security privacy. Motivated above, SEMIoTICS proposes development a pattern-driven framework, built upon existing platforms, enable...
As the demand for Network Function Virtualization accelerates, service providers are expected to advance way they manage and orchestrate their network services offer lower latency future users. Modern require complex data flows between Virtual Functions, placed in separate domains, risking an increase that compromises offered constraints. This shift requires high levels of automation deal with scale load networks. In this paper, we formulate Service Chaining (SFC) placement problem then...
5G will lay the foundations for mainstream broadband wireless technology of next decade, a leverage toward ensuring efficiency, effectiveness and adaptability everyday high-demanding operations, such as those in Public Protection Disaster Relief. The ITU considers LTE-Advanced systems mission critical PPDR able to address needs MC intelligence, providing support voice, data video services an IMT radio interface. In this paper, we introduce 5G-EPICENTRE, innovation action funded by EC under...
In this work, we propose an efficient resource management approach for WDM-PON ring architectures that supports dynamic bandwidth allocation and sharing of downstream wavelengths. We a modification in the ONU design, to dynamically setup virtual circuits inter-ONU communication. The reservation mechanism is arbitrated by OLT, which also monitors traffic imbalances channels.
Service providers highly rely on network softwarization for addressing the demanding use cases of 5G verticals. In order vertical scenarios to be seamlessly executed, where coverage should provided in large areas, required infrastructure capacity and availability can only supported by cross-operator cooperation. this context, we employ a novel federated core-edge architecture, services are represented as service function chains (SFCs) offered owned either local operator or foreign one....
The fifth-generation (5G) and beyond 5G (B5G) wireless networks introduced massive machine-type communications (mMTC) to cope with the growing demand of Internet Things (IoT) applications. However, heterogeneous characteristics IoT diverse quality service (QoS) requirements may lead severe interference that could degrade expected QoS cellular ecosystem. Therefore, this article studies impact caused by mMTC connections. We theoretically model intercell (ICI) minimization problem for existing...
The new technologies introduced by 5G, such as network slicing, will improve the capabilities of Vehicle-to-Vehicle (V2V) communications, enabling introduction a range services and forms Vehicle-to-Everything (V2X) interactions. In order to deploy these V2X slices they are associated with over 5G while ensuring Quality Service (QoS), intelligent proactive resource managers orchestrators (RMOs) need be developed. ability forecast slice demand can significantly increase proactivity RMOs....
This work presents a new converged access architecture for LTE mobile backhaul networks. In the proposed architecture, evolved NodeBs (eNBs) are interconnected with local ring-based wavelength-division-multiplexed (WDM) passive optical networks (PONs), which aggregate and efficiently transport traffic to packet core (EPC). The WDM-PON ring design supports dynamic setup of virtual circuits inter-base-station communication, over dedicated λLAN channel. It also load balancing, by dynamically...