Andrea Detti

• Professor
• University of Rome Tor Vergata

Federated testbeds enable collaborative research by providing access to diverse resources, including computing power, storage, and specialized hardware like GPUs, programmable switches and smart Network Interface Cards (NICs). Efficiently sharing these resources across federated institutions is challenging, particularly when resources are scarce an...

5G has introduced new paradigms of mobile network design and deployment and delivery of new services. Starting with 3GPP Release 15, 5G has evolved with Releases 16 and 17 and now fully supports all the envisioned service scenarios and, consequently, many vertical sectors and industries. The path to 5G-Advanced has just begun with Release 18. Meanw...

The seamless integration of multiple radio access technologies (multi-RAT) and cloud/edge resources is pivotal for advancing future networks, which seek to unify distributed and heterogeneous computing and communication resources into a cohesive continuum system, tailored for mobile applications. Many research projects and focused studies are propo...

inline-formula> $\mu$ Bench is an open-source tool for benchmarking cloud/edge computing platforms that run microservice applications. The tool creates dummy microservice applications that can be customized and executed on a Kubernetes cluster. $\mu$ Bench allows users to control fundamental properties of the microservice applications it creates...

The Common Workflow Language (CWL) is a platform-independent description language for the representation of data science workflows consisting of a set of tasks that interact with each other to perform scientific analysis. The tasks can be packaged as Linux containers. On the one hand, using containers ensures the reproducibility and portability of...

Microservice applications are made of many interacting microservices that can leverage different cloud servers to distribute the computational load horizontally, so these applications are considered cloud-native. The emergence of edge computing has prompted the research of placement strategies that consider the possibility of instantiating microser...

Many cloud providers offer IoT services that simplify the collection and processing of IoT information. However, the IoT infrastructure composed of sensors and actuators that produces this information remains outside the cloud; therefore, application developers must install, connect and manage the cloud. This requirement can be a market barrier, es...

Container technology plays an important role in the virtualization landscape today. A container uses its own file system consisting of a stack of layers, which are stored on the execution server's disk. Containers running on the same server share the layers they have in common, and this sharing results in valuable savings in server storage space. M...

Message Queuing Telemetry Transport (MQTT) is a widespread protocol for topic-based publish-subscribe architectures supporting IoT and social networks applications. MQTT brokers are logical entities that couple publishers and subscribers and play a critical role in such architectures. MQTT brokers can be implemented either as standalone servers or...

This paper explores the methodologies, challenges, and expected advantages related to the use of the information-centric network (ICN) technology for federating spatial databases. ICN services allow simplifying the design of federation procedures, improving their performance, and providing so-called data-centric security. In this work, we present a...

A very common problem in designing caching/prefetching systems, distribution networks, search engines, and web-crawlers is determining how long a given content lasts before being updated, i.e., its update frequency. Indeed, while some content is not frequently updated (e.g., videos), in other cases revisions periodically invalidate contents. In thi...

The paper describes the prototype of object search service wherein multiple IoT devices execute the network function of identifying the object in the specified area.

To open isolated Internet of Things (IoT) silos, the Web of Things (WoT) integrates IoT into the Web promoting an architecture with easy access APIs and applications, and ontologies further improve the data interoperability and federation capability of IoT platforms. With the increasing industry adoption of semantic technologies, a number of ontolo...

Multimodal travel planning services allow travelers to plan their journey by combining different transport modes: air, rail, waterborne, coach, public transport, demand responsive transport, walking, cycling, etc. The European Union is fostering the development of cross-border multimodal planning services by establishing a regulation framework for...

This paper explores methodologies, challenges and expected advantages related to the use of the Information Centric Network (ICN) technology for federating NoSQL databases. ICN services allow simplifying the design of federation procedures, improving their performance, and providing so-called data-centric security. In this work present an architect...

The expected dramatic growth of connected things raises the issue of how to efficiently organize them, in order to monitor and manage functions and interactions. Information Centric Networking (ICN) is a communication paradigm that provides content-oriented functionality in the network and at the network level, including content routing, caching, m...

This demonstration shows the use of ICN for tile-based panoramic video streaming. To reduce the bandwidth usage, tiles are encoded with different qualities. Tiles having a valuable impact on user QoE are fetched by the client at high quality, the others at low quality. A well-known drawback of having a video with multiple qualities is the reduction...

To support content-oriented services, the routers in Information Centric Networks (ICN) have to provide packet processing functions that are more complex with respect to IP standards, making harder to attain high forwarding rates. The ICN community is working to overcome this issue, designing new software and hardware routers, for setting higher th...

Least Recently Used (LRU) is a very popular caching replacement policy. It is very easy to implement and offers good performance, especially when data requests are temporally correlated, as in the case of web traffic. When the data content can change during time, as in the case of dynamic websites or within databases, there is the need to prevent t...

Information Centric Networking (ICN) is a paradigm in which the network layer provides users with access to content by names, instead of providing communication channels between hosts. The ICN paradigm promises to offer a set of advantages with respect to existing (IP) networks for the support of the large majority of current traffic. In this paper...

This paper explores methodologies, advantages and challenges related to the use of the Information Centric Network technology for developing NoSQL distributed databases, which are expected to play a central role in the forthcoming IoT and BigData era. ICN services make possible to simplify the development of the database software, improve performan...

This paper explores methodologies, advantages and challenges related to the use of Information Centric Networking (ICN) for realizing distributed spatial databases. Our findings show that the ICN functionality perfectly fits database requirements: routing-by-name can be used to dispatch queries and insertions, in-network caching to accelerate queri...

Mobile user terminals allow to access different networks through several interfaces. Seamless communications is an essential requirement and service continuity is its main metric from user perspective. Mobile IPv6, ad-hoc routing, dynamic link layer protocol, SDN paradigm greatly facilitate mobility and network flexibility. Nonetheless, full mobili...

Content Centric Networking (CCN), which is regarded as an innovational architecture of future network, is increasingly gaining attention in recent years. Based on the observation of current Internet usage, CCN presents a content-centric model which focuses on data distribution and retrieval. To enhance the efficiency of content distribution, In-net...

Information Centric Networking (ICN) is a network paradigm alternative to the classic host-centric communication model: it provides users with content exposed as names, instead of providing communication channels between hosts. In this paper, we present a peer-to-peer application for live streaming of video content encoded at multiple bit rates. Th...

A content can be replicated in more than one node, in Information Centric Networks (ICNs). Thus, more than one path can be followed to reach the same content, and it is necessary to decide the interface(s) to be selected in every network node to forward content requests towards such multiple content containers. A multipath forwarding strategy defin...

CONET (Convergence Network) is the network-layer of the CONVERGENCE project. It is an Information Centric Network, which extends the CCNx one in several aspects, including routing scalability, transport mechanisms, security handling, integration with IP, etc. This section describes services and functionalities of CONET and reports some performance...

Abstract—Information Centric Networking (ICN), a novel network paradigm, places the focus on the content instead of the end-hosts. ICN addresses content by names instead of locations and can ease content retrieval and improve network efficiency. Ongoing work attempts to extend the use of ICN to scenarios such as real time communication, group commu...

Mobile Ad-hoc NETworks (MANETs) connect mobile wireless devices without an underlying communication infrastructure. Communications occur in a multi-hop fashion, using mobile devices as routers. Several MANET distributed applications require to exchange data (GPS position, messages, pictures, etc.) by using a topic-based publish–subscribe interactio...

In this paper we consider a Wireless Mesh Network (WMN) integrating SDN principles. The Wireless Mesh Routers (WMR) are OpenFlow capable switches that can be controlled by SDN controllers, according to the wmSDN (wireless mesh SDN) architecture that we have introduced in a previous work. We consider the issue of controller selection in a scenario w...

We propose Internames, an architectural framework in which names are used to identify all entities involved in communication: contents, users, devices, logical as well as physical points involved in the communication, and services. By not having a static binding between the name of a communication entity and its current location, we allow entities...

Information Centric Networking (ICN) is paradigm in which the network layer provides users with content addressed "by name". In-network caching is one of the key functionality to be provided by ICN nodes. To avoid network nodes caching fake contents, it is necessary to verify the validity of data items. A content is deemed to be valid if it verifie...

In this paper we propose to integrate Software Defined Networking (SDN) principles in Wireless Mesh Networks (WMN) formed by OpenFlow switches. The use of a centralized network controller and the ability to setup arbitrary paths for data flows make SDN a handy tool to deploy fine-grained traffic engineering algorithms in WMNs. However, centralized...

Performance evaluation of caching systems is an old and widely investigated research topic. The research community is once again actively working on this topic because the Internet is evolving towards new transfer modes, which envisage to cache both contents and instructions within the network. In particular, there is interest in characterizing mul...

In some network and application scenarios, it is useful to cache content in network nodes on the fly, at line rate. Resilience of in-network caches can be improved by guaranteeing that all content therein stored is valid. Digital signatures could be indeed used to verify content integrity and provenance. However, their operation may be much slower...

Information Centric Networking (ICN) has been proposed as a new networking paradigm in which the network provides users with content instead communication channels between hosts. The Software Defined Networking (SDN) approach promises to be a solution to enable the continuous evolution of networking architectures. In this paper we propose and discu...

Information Centric Networking (ICN) is a new paradigm in which the network layer provides users with content, instead of providing communication channels between hosts, and is aware of the name (identifier) of the contents. In this chapter, first, we briefly describe the FP7 project CONVERGENCE and its approach to ICN. Second, we discuss the needs...

Information Centric Networking (ICN) is a new paradigm in which the network layer provides users with content, instead of providing communication channels between hosts, and is aware of the name (or identifiers) of the contents. In this paper, we first describe what, we believe, are the main advantages and components of an ICN infrastructure; then...

Information Centric Networking (ICN) is a new paradigm in which the network layer provides users with content, instead of providing communication channels between hosts, and is aware of the name (or identifiers) of the contents. A fundamental ICN operation is the routing of content requests towards a node that is able to provide the requested conte...

This paper explores possible advantages of the Information Centric Networking (ICN) paradigm in a geostationary satellite network. We find out that, with respect to plain HTTP services, ICN makes possible to reduce the downstream bandwidth consumed for Internet access by better exploiting the temporal locality of references within requested streams...

Content to be transported over an Information Centric Networking (ICN) infrastructure can be very variable in size, from few bytes to hundreds of gigabytes. Therefore it needs to be segmented in smaller size data units, typically called chunks, in order to be handled by ICN nodes. A chunk is the basic data unit to which caching and security (e.g. e...

Originally conceived as a “network of hosts”, the Internet is evolving into an Internet of services, an Internet of media, an Internet of people and an Internet of “things”. This implies a strategic shift from “host-centric” to “content-centric” and “data-centric” networking. CONVERGENCE proposes to enhance the Internet with a novel, information-ce...

In this paper we present a cooperative video streaming application running on top of an “Information Centric Network” (ICN). The application could be used on mobile devices to offload the cellular radio interface. We demonstrate our application in a test-bed exploiting the CCNx software implementation of an ICN, the VideoLan tool and the Apple HTTP...

Information-centric networking (ICN) is a novel networking paradigm which is attracting increasing attention by both academic and industrial researchers. In fact, it promises to provide technological solutions that best fit with the way in which Internet is actually utilized. Assessment of proposed solutions require appropriate experimental testbed...

The Information-Centric Networking (ICN) paradigm is expected to be one of the major innovation of the Future Internet An ICN can be characterized by some key components like: (i) the content-centric request/reply paradigm for data distribution, (ii) route-by-name operations, and (iii) in-network caching. In this paper we focus on a framework for I...

The aim of this work is to present Campus++, a location-based publish-subscribe system for intermittently connected delay tolerant networks, exploiting IEEE 802.15.4 devices, and taking into due account the severe constraints deriving from their physical characteristics. We describe our proposed architectural model and how we implemented our soluti...

CONET is a content-centric inter-network that provides users with a network access to remote named-resources, rather than to remote hosts. Named-resources can be either data (named-data) or service-access-points (named-sap), identified by a network-identifier (a name). CONET interconnects CONET Sub Systems, which can be layer-2 networks, layer-3 ne...

In this work we assess the delay performance of a Publish Subscribe system built on top of a Delay Tolerant Network (DTN) composed of nodes with limited storage capacities. Many DTN routing protocols replicate the same data over several nodes, in order to deliver data to destination in a faster or in a more reliable way. Of course, increasing the n...

Wireless community networks are mesh networks built by volunteers which own, configure, and manage their wireless node. Such networks are prone to either unintentional (e.g. misconfiguration) or intentional node misbehavior. This paper proposes a fully distributed trust-based routing framework, tightly integrated with OLSR, which is the most exploi...

The aim of this extended abstract is to present Campus++, a location-based publish-subscribe system for intermittently connected delay tolerant networks, exploiting IEEE 802.15.4 devices, and taking into due account the severe constraints deriving from their physical characteristics. We describe our proposed architectural model and how we implement...

Nowadays most people exploit the Internet to get contents such as web pages, music or video files. These users only value “what” they download and are not interested about “where” content is actually stored. The IP layer does the opposite and cares about the “where” and not about the “what”. This contrast between the actual usage of the Internet an...

The 802.11 DCF protocol was devised to achieve per-station fairness; conversely, an harsh per-station unfairness occurs when DCF is loaded by TCP traffic. We aim at extending theoretical knowledge on this fairness issue and at restoring per-station fairness. The contribution of the paper is threefold. First, we introduce two findings: (i) changing...

The goal of this paper is to report on the design of a novel content-centric future Internet platform that can support added value services incorporating mobility, context awareness and enhanced security and privacy. We present the proposed platform together with a use case study, dealing with the provision of added-value health services, consistin...

The small size and power consumption of IEEE 802.15.4 devices allows embedding them in GSM/UMTS U-SIM cards and/or SD cards. The availability of such technology for data exchange within mobile phones is very useful to complement GSM/UMTS services, providing proximity services, such as chat and advertisements in a shopping mall, configuration data,...

The WiMAX system carries a wide range of services in urban and rural environments supporting quality of service. A key element of the QoS framework is the scheduling algorithm adopted by the Base Station (BS). In this paper, we analyze the saturation throughput perceived by Mobile Stations in the cases of two BS scheduling algorithms: Deficit Round...

In this paper we present a Robust data Replication Algorithm (RRA) for MANETs. RRA ensures persistent data availability by duplicating data over replica-nodes, while minimizing the consumption of radio resources. RRA is the first algorithm thoroughly designed to operate in environments with node failures and radio obstacles (e.g., buildings, walls)...

The Data Distribution Service (DDS) middleware is enjoying a rapid adoption in high-performance, mission-critical networks. At the same time, the H.264 Scalable Video Coding (SVC) has been recently standardized and it is deemed to be an effective solution for video streaming over a channel with time-varying bandwidth, like the wireless one. In thes...

Thanks to its in-network drop-based adaptation capabilities, H.264 Scalable Video Coding is perceived as an effective approach for delivering video over networks characterized by sudden large bandwidth fluctuations, such as Wireless LANs. Performance may be boosted by the adoption of application-aware/cross-layer schedulers devised to intelligently...

An important issue in dynamically constructed Virtual Private Networks (VPN) is how the overlay topology is created and maintained. Classical VPN topologies, such as hub-and-spoke or full-mesh, fail to remain convenient and viable when the number of nodes grows to as little as a few tens. Convenient topology formation mechanisms should be distribut...

In this paper, we consider synchronous optical packet networks formed by switches equipped with a complete set of limited-range wavelength converters. On these networks, we dealt with scheduling algorithm that maximizes the switch throughput. So far, previous literature works have formalized this scheduling problem as the finding of a maximum bipar...

This paper describes the H.264 scalable video coding streaming evaluation framework (SVEF). This is the first open-source framework for experimental assessment of H.264 scalable video coding (SVC) delivery over real networks. Effectively adapting of the transport of an H.264 SVC stream to time-varying, bandwidth constrained, and loss prone networks...

This paper is among the first works to document experimental results for application-aware H.264 Scalable Video Coding (SVC) support over wireless LANs. Application-aware support is achieved by introducing a bandwidth throttling device, called Virtual Bottleneck (VBN), before the WLAN access point. Throttling is set to a bandwidth slightly smaller...

In this paper we evaluate analytically the average occupancy of the transmission buffer of a 802.11 station (STA). The station belongs to a Wi-Fi Hot-Spot and exchanges data with a fixed host. The data exchange is regulated by the Transmission Control Protocol (TCP). The research interest is motivated by the fact that several papers assume that in...

This paper presents a novel Mobile Ad-hoc NETworks (MANET) multicast protocol, named Overlay Borůvka-based Ad-hoc Multicast Protocol (OBAMP), and evaluates its performance. OBAMP is an overlay protocol: it runs only in the end-systems belonging to the multicast group. OBAMP has three distinctive features, which give to the protocol a good performan...

This paper presents a novel MANET multicast protocol, named overlay Boruvka-based ad-hoc multicast protocol (OBAMP), and evaluates its performance. OBAMP is an overlay protocol: it runs only in the end-systems belonging to the multicast group. User data are distributed over a shared distribution tree formed by a set of non-cyclic UDP tunnels. OBAMP...

In this paper, we study the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs), based upon the IEEE 802.11 standard and operating in DCF mode. Although this mode of operation ensures fair access to the medium at the MAC level, it does not provide fairness among TCP connections. TCP unfairness may result in s...

In this paper, we study the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. Current implementations of 802.11 use the so-called distributed coordination function (DCF), which provides similar medium access priority to all stations. Although this mode of operation ensur...

This paper describes the main functionalities of OBAMP protocol for multicasting in MANETs. Moreover, the paper describes two demonstrations of OBAMP in an emulated MANET environment: i) comparative performance evaluation versus flooding and unicast; ii) show cases of streaming and walkie-talkie applications.

This paper deals with application level QoS and fairness issues in IEEE 802.11 wireless LANs. The current implementations of 802.11 use the DCF, which gives the same medium access priority to all stations. However, fairness at the MAC level does not necessarily translate in fairness at the application level, particularly in presence of TCP-based ap...

This paper investigates support for TCP RENO flows in an Optical Burst Switching (OBS) network. In particular we evaluate the TCP send-rate, i.e., the amount of data sent per time unit taking into account the burst assembly mechanism at the edge nodes of the OBS network and burst loss events inside the network. The analysis demonstrates an interest...

Bluetooth is a low-cost, short-range wireless technology capable of providing many communication functionalities, ranging from wire replacement to simple personal area networking. In Bluetooth local networking applications, a critical issue still under study is the evaluation of the network performance when multiple piconets are simultaneously acti...

The VICOM (Virtual Immersive COMmunications) project is a three-year project funded by the Italian Ministry of Instruction University and Research aiming at investigating innovative communication paradigms. The project represents a wide coordinated effort focused on integration of immersive and wireless technologies in view of the fourth generation...

This paper investigates the effectiveness of the application level multicasting, named overlay multicasting, with respect to the network layer one in mobile ad hoc networks (MANET). With respect to the network layer multicasting in overlay multicasting, only the mobile nodes participating in the multicast group have exploited the multicast routing...

In this paper, we present the eCASA system architecture, which allows a service provider to develop and to furnish context-aware mobile services by integrating different service components. These components may be implemented by means of the "off-the-shelf" technologies.

The paper describes the Virtual Immersive Communication (VICOM) project, and reports the state of art with respect to the wireless networking issues. The project vertically exploits the enabling technologies for Immersive communications enriched with virtual reality components. The research topics are common driven toward the final project goal, co...

In this paper we study the Optical Burst Switching (OBS) paradigm for the support of the TCP flows in an All Optical Network (AON). We analyze the TCP send rate, i.e. the amount of data sent per time unit, taking into account of: i) the burst assembly mechanism, called burstification process; ii) the burst loss events inside the OBS network. The go...

Bluetooth is considered as a low-cost short-range wireless technology to provide communication functionalities, ranging from wire replacement to simple personal area network. In Bluetooth local networking applications a critical issue still under study is the evaluation of the network capacity when multiple piconets are simultaneously active in the...

This paper deals with the comparison between two resource reservation techniques, named Tell and Go (TG) and Tell and Wait (TW), when they are used in an All Optical Network for the support of high-speed IP traffic. This comparison study is motivated considering that the modes currently under investigation for the implementation of the next generat...

In this paper, the optical burst switching with burst dropping (OBS/BD) technique is proposed to be implemented in an all-optical backbone network to support IP traffic. The OBS/BD is based on two main features: i) several IP packets are assembled in a single macro-packet, called burst; ii) the burst contention in an optical switch is handled by th...

We study the optical burst switching (OBS) paradigm for the support of the TCP flows in an all optical network (AON). We analyze the TCP send rate, i.e. the amount of data sent per time unit, taking into account of: (i) the burst assembly mechanism, called burstification process; (ii) the burst loss events inside the OBS network. The goals of the p...

This paper analyzes a framework to offer reservation of resources and QoS guarantees according to the Resource Reservation Protocol (RSVP) paradigm in a network cloud that supports a differentiated services architecture. The key elements are: intelligent Edge Devices; a flow admission and resource allocation method involving an Admission Control Se...

This paper analyzes a framework to offer reservation of resources and QoS guarantees according to the resource reservation protocol (RSVP) paradigm in a network cloud that supports a differentiated services architecture. The key elements are: intelligent edge devices; a flow admission and resource allocation method involving an admission control se...

In this paper, we study the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. Current implementations of 802.11 use the so-called Distributed Coordination Function (DCF) which provides similar medium access priority to all stations. Although this mode of operation ensure...

In this paper, we study the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. Current implementations of 802.11 use the so-called Distributed Coordination Function (DCF) which provides similar medium access priority to all stations. Although this mode of operation ensure...

This paper deals with application level fairness issues in IEEE 802.11 Wireless LANs. The current implementations of 802.11 use the so called Dis-tributed Coordination Function (DCF) that gives the same medium access prior-ity to all the stations: realizing fairness at the MAC level. Nevertheless, fairness at MAC level may not correspond to fairnes...