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Publications (68)
1 6G networks will revolutionize connectivity with unprecedented speeds, ultra-low latency, and reliable communications, enabling advanced applications like Augmented and Virtual Reality (AR and VR), and autonomous systems. To achieve these goals, testbed platforms play a crucial role in this process allowing researchers to execute and validate fra...
A fully-automated SDN-controlled real-time operation of a hybrid Fiber-Wireless 10Gb/s FSO and 5Gb/s mmWave link across 7km-fiber and 0.5m-radio distance resilient at all weather conditions is experimentally presented, supporting 25μs beam-switching and zero-touch hard handover via tunable SFP+ transceivers and simple all-passive 1x2 C-/O-band dipl...
As the fifth generation (5G) mobile communication systems are commercially deployed, they bring new services, enhance user experiences, and offer various opportunities to different industries. Despite its advancements, 5G encounters several challenges. To tackle these issues, global industrial, academic, and standards organizations are actively res...
The Industry 4.0 (I4.0) concept revolutionizes how processes like quality, productivity, customization, and safety are managed in manufacturing. It has developed alongside 5G technology, and the two influence each other significantly. 5G supports the communication needs of I4.0, while I4.0 is a major sector for 5G growth. This whitepaper offers a c...
The Industry 4.0 (I4.0) concept revolutionizes how processes like quality, productivity, customization, and safety are managed in manufacturing. It has developed alongside 5G technology, and the two influence each other significantly. 5G supports the communication needs of I4.0, while I4.0 is a major sector for 5G growth. This whitepaper offers a c...
Network programmability is crucial for addressing the multiplicity and heterogeneity of Network Services, the diversity of the underlying infrastructure of Sixth-Generation (6G) communication systems, and the requirements for maximum efficiency. The programmability of a service platform enables algorithmic network management by leveraging contempor...
In order to cope with the ever-increasing traffic demands and stringent latency constraints, next generation, i.e., sixth generation (6G) networks, are expected to leverage Network Function Virtualization (NFV) as an enabler for enhanced network flexibility. In such a setup, in addition to the traditional problems of user association and traffic ro...
5G network nodes, fronthaul and backhaul alike, will have both forwarding and computational capabilities. This makes energy-efficient network management more challenging, as decisions such as activating or deactivating a node impact on both the ability of the network to route traffic and the amount of processing it can perform. To this end, we form...
5G network nodes, fronthaul and backhaul alike, will have both forwarding and computational capabilities. This makes energy-efficient network management more challenging, as decisions such as activating or deactivating a node impact on both the ability of the network to route traffic and the amount of processing it can perform. To this end, we form...
The emergence of new paradigms and services is pushing the limits of nowadays cloud infrastructures. It is a fact that current solutions lack in the flexibility and configurability to adapt to heterogeneous requirements coming from the applications/services to be supported over them. This results most of the time in severe underutilization of the u...
Network architectures compliant with the Software Defined Networking (SDN) design paradigm, are expected to provide extreme flexibility for service orientation and allow for efficient use of network resources of cloud systems. Nevertheless, radical reconsidering and removal of boundaries set out when studying multi-domain communications are require...
This chapter proposes a next-generation ubiquitous converged infrastructure to support cloud and mobile cloud computing services. The proposed infrastructure facilitates efficient and seamless interconnection of fixed and mobile end users with computational resources through a heterogeneous network integrating optical metro and wireless access netw...
Mobile computation offloading has been identified as a key-enabling technology to overcome the inherent processing power and storage constraints of mobile end devices. To satisfy the low-latency requirements of content-rich mobile applications, existing mobile cloud computing solutions allow mobile devices to access the required resources by access...
Undoubtedly, SDN has the potential to fundamentally change the way end-to-end networks are provisioned and designed. By introducing programmability into networking, the handling of network changes and network provisioning via open software interfaces has become a reality; together with the hardware/software virtualization advances in server systems...
Cloud computing service emerged as an essential component of the Enterprise IT infrastructure. Migration towards a full range and large-scale convergence of Cloud and network services has become the current trend for addressing requirements of the Cloud environment. Our approach takes the infrastructure as a service paradigm to build converged virt...
This paper proposes a next generation ubiquitous converged infrastructure to support Cloud and mobile Cloud computing services. The proposed infrastructure facilitates interconnection of fixed and mobile end users with computational resources through a heterogeneous network integrating optical metro and wireless access networks. To satisfy the low-...
Cloud computing is a promising solution for the flexible, on-demand delivery of communication services and infrastructures. The European Union funded project Mobile Cloud Networking is developing a cloud-based mobile communication service platform where service providers deliver virtualized wireless infrastructures integrated with high-level applic...
Network performance in terms of throughput, latency, packet loss or jitter significantly influences user’s quality of experience of cloud applications. Network services impact on cloud applications performance and this impact is even more significant when the cloud infrastructure spreads over different administrative domains, such as in a federated...
This article focuses on planning and replanning of virtual infrastructures over optical cloud infrastructures comprising integrated optical network and IT resources. This concept has been developed in the context of the European project GEYSERS. GEYSERS has proposed a novel multi-layer architecture, described in
detail, that employs optical network...
This article focuses on planning and replanning of virtual infrastructures over optical cloud infrastructures comprising integrated optical network and IT resources. This concept has been developed in the context of the European project GEYSERS. GEYSERS has proposed a novel multi-layer architecture, described in detail, that employs optical network...
Mobile computation offloading has been identified as a key enabling technology to overcome the inherent processing power and storage constraints of mobile end devices. To satisfy the low-latency requirements of content-rich mobile applications, existing mobile cloud computing solutions allow mobile devices to access the required resources by access...
The project CONTENT proposes a next generation ubiquitous converged infrastructure to support Cloud and mobile Cloud computing services. The proposed infrastructure facilitates interconnection of fixed and mobile end users with computational resources through a heterogeneous network integrating optical metro and wireless access networks. In this pa...
BonFIRE is a multi-site testbed that supports testing of Cloud-based and distributed applications. BonFIRE breaks the mould of commercial Cloud offerings by providing unique functionality in terms of observability, control, advanced Cloud features and ease of use for experimentation. A number of successful use cases have been executed on BonFIRE, i...
Network control architectures of datacentres and backbone/transit domains are deeply changing with Software Defined Networking. This paper presents an architectural framework for end-to-end cloud service orchestration across datacentre, metro and core network infrastructures. OCIS codes: (060.4250) Networks, (060.1155) All-optical networks
Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multi-technology problems are not sufficiently investigated. These multi-domain, end-to-end problems concern communication paths that span from the wireless access and the wireless backhaul n...
In recent years we have seen how Cloud Computing is changing the way of doing businesses and how services are delivered over the Internet. This disruption is a major challenge for Service Providers and Independent Software Vendors when creating new services and software applications for the Cloud. BonFIRE offers a federated, multi-site cloud testbe...
The rapid evolution of the cloud market is leading to the emergence of new services, new ways for service provisioning and new interaction and collaboration models both amongst cloud providers and service ecosystems exploiting cloud resources. Service Level Agreements (SLAs) govern the aforementioned relationships by defining the terms of engagemen...
Large-scale computer networks supporting both communication and computation are extensively employed to deal with a variety of existing and emerging demanding applications. These high-performance applications, requiring very high network capacities and specific IT resources, cannot be delivered by the current Best Effort Internet. Optical networkin...
This paper presents on-going research to develop the Intercloud Architecture Framework (ICAF) that addresses problems in multi-provider multi-domain heterogeneous cloud based infrastructure services and applications integration and interoperability, to allow their on-demand provisioning. The paper refers to existing standards and ongoing standardis...
Cloud computing, building on the idea of “computation as a public utility” is made possible by the increased network capabilities in terms of bandwidth and reduced latency. The cloud paradigm today sees adoption in many businesses given its advantages, not only from a customer point of view (e.g., universal access to the same applications across al...
This paper proposes a next generation ubiquitous converged infrastructure to support Cloud and mobile Cloud computing services. The proposed infrastructure facilitates interconnection of fixed and mobile end users with IT resources through a heterogeneous network integrating optical metro and wireless access networks. To support the Infrastructure...
New emerging high performance and distributed applications require the interconnection of IT resources through high capacity and flexible networks. In this context, the FP7 GEYSERS project proposes on-demand provisioning of converged Virtual Infrastructures composed of IT and optical network resources, able to support the delivery of cloud services...
OBS-based metro-regional networks can be interconnected through WSON networks to offer inter-data center connectivity. This paper validates, in a multi-partner testbed, the application of the H-PCE architecture for path computation in such Multi-layer, Multi-domain networks.
The convergence between IT and optical network services is a fundamental step to support new emerging applications, typically distributed and with strict requirements in terms of performance and service reliability. The FP7 GEYSERS project has designed a new network architecture capable of joint and on-demand provisioning of 'Optical Network + Any-...
This is a positioning paper that presents some of the trends in optical networks, considered within the CaON (Converged and Optical Networks) cluster. The trends exposed are focused on the convergence of optical networks and IT infrastructures, optical virtualisation and the control and management in support of emerging cloud computing applications...
The European Integrated Project GEYSERS - Generalised Architecture for Dynamic Infrastructure Services - is concentrating on infrastructures incorporating integrated optical network and IT resources in support of the Future Internet with special emphasis on cloud computing. More specifically GEYSERS proposes the concept of Virtual Infrastructures o...
In this paper we propose energy efficient design and operation of infrastructures incorporating integrated optical network and IT resources. For the first time we quantify significant energy savings of a complete solution jointly optimizing the allocation and provisioning of both network and IT resources. Our approach involves virtualization of the...
Over the years, the Internet has become a central tool for society. The extent of its growth and usage raises critical issues associated with its design principles that need to be addressed before it reaches its limits. Many emerging applications have increasing requirements in terms of bandwidth, QoS and manageability. Moreover, applications such...
GEYSERS aims at defining an end-to-end network architecture that offers a novel planning, provisioning and operational framework for optical network and IT infrastructure providers and operators. In this framework, physical infrastructure resources (network and IT) are dynamically partitioned to virtual resources and then composed into a Virtual In...
GEYSERS partitions the physical infrastructure to create specific virtual infrastructures, each one controlled by an enhanced Network Control Plane capable of provisioning Optical Network Services bundled with IT resources in an on demand basis, and oriented to cloud computing applications.
In this paper we present the Smart City Archi-tecture developed in the context of the ARTEMIS JU SP3 SOFIA project. It is an Event Driven Architecture that allows the management and cooperation of heterogeneous sensors for monitoring public spaces. The main components of the architecture are implemented in a testbed on a subway scenario with the ob...
Although WiMAX, based on the IEEE 802.16 family of standards, has emerged as one of the major candidates for next generation
networks, it is also clear that in the near future, the combination of several technologies will be required. In this sense,
the support of mobility in heterogeneous environments, addressing broadband wireless, is one of the...
The purpose of the poster is to show main results we obtained during the first year of the SOFIA Project, a three-year ARTEMIS project started in January 2009, led by NOKIA and involving eighteen partners from four different EU countries. We focus on the application area related to smart city spaces and, in particular, on the Unified Monitoring and...
The anticipated deployment of IEEE 802.16-based wireless metropolitan area networks (WMANs) will usher a new era in broadband wireless communications. The adoption of the WiMAX technology for remote areas, for example, can address challenging scenarios in a cost-effective manner. While WiMAX Forum documents describe an architecture that inherently...
IntroductionIEEE 802.16 Reference ModelCross-layer Design for WiMAX NetworksWEIRD: A Practical Case of WiMAX Cross-layer DesignWEIRD Framework Performance EvaluationSummaryReferences
The IEEE 802.16 standard provides a specification for a fixed and mobile broadband wireless access system, offering high data rate transmission of multimedia services with different Quality-of-Service (QoS) requirements through the air interface. The WiMAX Forum, going beyond the air interface, defined an end-to-end WiMAX network architecture, base...
The IEEE 802.16 standard (WiMAX) provides a specification for fixed and mobile broadband wireless acce ss system, offering high data rate transmission of mul timedia services with different Quality-of-Service (QoS) requirements through the air interface. The WiMAX Forum, going beyond the air interface, has defined an end-to-en W iMAX network archit...
IEEE 802.16 networks provide mechanisms for QoS support at MAC level, but end-to-end QoS issues are not addressed in detail in the standards. This paper presents an analysis and an experimental validation of a comprehensive solution that describes and implements end-to-end QoS in networks with IEEE802.16e segments. A complete QoS model has been spe...
Wireless Metropolitan Area Networks based on IEEE 802.16d/e standards are soon to be deployed in several countries. However, there is lack of published literature with results from actual testbeds. This paper introduces the work done in the EU Sixth Framework Programme Project WEIRD to design and set up WiMAX testbeds in four EU countries. We descr...
In this paper is presented an architecture for the control of wireless resources in a WiMAX access network, designed within the 1ST WEIRD project. Starting from WiMAX Forum architecture, new software modules have been introduced in the Control plane in order to manage dataflows in WiMAX access networks. The proposed solution allows to guarantee the...
The use of Intrusion Detection Systems (IDSs) has emerged as a key element in network security. In this paper we present the design and the validation of an Anomaly based Network IDS, named Self Learning Intrusion Detection System (SLIDS), able to identify new ad hoc attacks. SLIDS has a modular structure, that not only provides flexibility and ext...
The IEEE 802.16 standard provides a specification for a fixed and mobile broadband wireless access system, offering high data rate transmission of multimedia services with different Quality-of-Service (QoS) requirements through the air interface. The WiMAX Forum, going beyond the air interface, has defined an end-to-end WiMAX network architecture,...
IEEE 802.16/WiMAX is one of the most promising technologies for Broadband Wireless Access, both for fixed and mobile use. Many application scenarios have been studied so far, including Wireless Local Loop, Wireless DSL and as an alternative to 3G in developing countries. This paper presents an architectural solution to include a WiMAX based access...