A5062694631- Wireless Networks and Protocols
- Mobile Ad Hoc Networks
- Network Traffic and Congestion Control
- Software-Defined Networks and 5G
- Cooperative Communication and Network Coding
- Advanced Wireless Network Optimization
- Opportunistic and Delay-Tolerant Networks
- Advanced Optical Network Technologies
- Advanced MIMO Systems Optimization
- Caching and Content Delivery
- Peer-to-Peer Network Technologies
- Network Security and Intrusion Detection
- Interconnection Networks and Systems
- Wireless Communication Networks Research
- Internet Traffic Analysis and Secure E-voting
- IoT and Edge/Fog Computing
- Cloud Computing and Resource Management
- Energy Efficient Wireless Sensor Networks
- Millimeter-Wave Propagation and Modeling
- IPv6, Mobility, Handover, Networks, Security
- Green IT and Sustainability
- Distributed systems and fault tolerance
- Graph Theory and Algorithms
- Advanced Computing and Algorithms
- Network Packet Processing and Optimization
University of Naples Federico II
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
Ingegneria dei Trasporti (Italy)
2003-2020
Consorzio Interuniversitario Nazionale per l'Informatica
2005-2014
In this paper we present our traffic generation platform, named D-ITG (distributed Internet generator). Its features are first described. We believe that some capabilities in fact innovative, since no other generator offers them. Then, describe the original architecture of D-ITG, which allows to achieve high performance. hint at a comparison with generators and conclude ongoing work add new features.
The availability of cost-effective wireless network interface cards makes it practical to design devices with multiple radios which can be exploited simultaneously transmit/receive over different frequency channels. It has been shown that using per node increases the throughput multi-hop mesh networks. However, multi-radios create several research challenges. A fundamental problem is joint channel assignment and routing problem, i.e., how channels assigned a set flow rates determined for...
In the Cloud Computing paradigm there is an emerging Green awareness, aimed at increasing cost-efficiency of underlying infrastructure. The pursued objective to find right compromise between energy consumption and perceived quality service applications running in cloud. Big data centers, along with adoption virtualization technology, are increasingly experiencing need reduce consumption, because both environmental pollution economic concern. Among novel techniques used minimize wastefulness...
Bitcoin is a new digital currency created with the aim of being decentralized, peer-to-peer, censorship-resistant, borderless, scarce, fast and cheap to use. Since main way operating based on broadcast communications, e.g. all transactions reach network peers, how achieve scalability one most important concerns for it wide usage. One proposals improve its takes form Lightning Network (LN) which consists an overlay top base layer. Such allows perform kind off-blockchain transactions, i.e. not...
IEEE 802.11be networks (aka Wi-Fi 7) will have to cope with new bandwidth-hungry and low-latency services such as eXtended Reality multi-party cloud gaming. With this goal in mind, transmit opportunity (TXOP) sharing between coordinated access points (APs) may contribute alleviating inter-AP contention, hence increasing the overall network throughput. This paper evaluates two TXOP strategies: time division multiple (c-TDMA) coordinated-TDMA spatial reuse (c-TDMA/SR). We show that, while...
Channel assignment is among the most challenging issues for multiradio wireless mesh networks, given variety of objectives that can be pursued and computational complexity resulting problems. The channel problem has been also shown to interdependent with routing problem, i.e., determine amount traffic flow routed on every link. Such a relationship raises need recompute time pattern changes. However, algorithms designed assign channels from scratch will likely return completely different...
Wireless mesh networks are being deployed all around the world both to provide ubiquitous connection Internet and carry data generated by several services (video surveillance, smart grids, earthquake early warning systems, etc.). In those cases where fixed power connections not available, nodes operate harvesting ambient energy (e.g., solar or wind power) hence they can count on a limited time-varying amount of accomplish their functions. Since we consider equipped with multiple radios,...
WiFi 6 based on the IEEE 802.11ax amendment is intended to improve spectral efficiency and area throughput operations in high density environments. This achieved (among other methods) by introduction of Orthogonal Frequency Division Multiple Access (OFDMA) enhanced multi-user Input Output (MU-MIMO) features. In this work, we explore performance downlink uplink OFDMA via extensive simulation evaluation (latency, throughput, range) compared conventional single user (SU) transmissions. Based...
With the introduction of Orthogonal Frequency Division Multiple Access (OFDMA) in 802.11ax, role Point (AP) Wi-Fi networks changes significantly, thanks to opportunity implementing more complex scheduling logic handle Downlink (DL) traffic flows and simultaneously act as coordinator Multi User (MU) Uplink (UL) transmissions. In this context, it becomes necessary develop reliable network analysis simulation tools that allow for an in-depth investigation trade-offs involved usage OFDMA,...
In the recent years, a growing number of applications have been demanding more and stringent communication requirements to deliver services with requested quality. Application fields range from industrial control systems entertainment (e.g., Extended Reality) telemedicine remote surgery). Meeting such necessitates extending currently used network technologies, which not conceived guarantee extremely low latency (< 1 ms) specific data flows. response needs, IEEE 802.1 TSN (Time Sensitive...
The introduction of Orthogonal Frequency Division Multiple Access (OFDMA) in 802.11ax signifies a change role for the Point (AP) WiFi networks, with opportunity to implement more complex scheduling logic handle Downlink (DL) traffic flows and simultaneously act as coordinator Multi User (MU) Uplink (UL) transmissions. In this context it becomes necessary develop reliable network analysis simulation tools that allow an in-depth trade-offs involved usage OFDMA, especially considering standard...
The focus of this paper is on wireless mesh networks. In particular, we study the multi-radio case, given considerable improvement in network throughput that multiple radios allow to achieve and availability cost-effective devices. Interesting research problems are still unsolved field. Due scarcity non-overlapped frequency channels available per node, interference present, which cuts achievable down. As depends how bound radio interfaces, a proper channel assignment scheme needed reduce...
In this paper, we develop a novel throughput- maximizing OFDMA scheduler for the multi-user MAC framework IEEE 802.11ax networks. The works both in downlink and uplink directions assigns resource units to stations using linear programming technique considering load of each client, possible unit configurations, modulation-coding scheme ageing factor client's load. performance proposed has been evaluated NS3 simulator compared against legacy layer mechanism 802.11 protocol (i.e., DCF/EDCA)....
The multi-AP coordination is a key feature of Wi-Fi 7 (EHT) and promising approach to improving the utilization limited radio resources. However, APs requires exchange information among in set order make optimal sharing decision with regard specific performance parameters. In this work, we present control frames defined for purpose transmission procedures EHT coordination. We implemented new ns-3. Furthermore, designed scheduler aim network non-saturated conditions by time resources, i.e.,...
Network virtualization is gaining a lot of interest from the research community thanks to its ability support new networking paradigms and experimental scenarios. Virtual network embedding (VNE) key step for enabling efficiency allows maximize profits physical (also called substrate network) provider. In this paper we focus on cases where consists multi-radio IEEE 802.11 wireless mesh network. such kind network, bandwidth link depends rate used transmit but also number links that use same...