Papers by Maurizio D'Arienzo
International journal of Computer Networks & Communications
The Software-Defined Networking (SDN) paradigm does represent an effective approach aimed at enha... more The Software-Defined Networking (SDN) paradigm does represent an effective approach aimed at enhancing the performance of core networks by introducing a clean separation between the routing plane and the forwarding plane. However, the centralized architecture of SDN networks raises resiliency concerns that are addressed by a class of algorithms falling under the Controller Placement Problem (CPP) umbrella term. Such algorithms seek the optimal placement of the SDN controller. In this paper, we evaluate the main CPP algorithms and provide an experimental analysis of their performance, as well as of their capability to dynamically adapt to network malfunctions and disconnections.
Abstract—Current ad hoc networks rely on a silent mutual agreement among nodes to relay packets t... more Abstract—Current ad hoc networks rely on a silent mutual agreement among nodes to relay packets towards the destinations. The effort made by each single node to serve the others is usually repaid with the chance to successfully set up its own traffic sessions. However, limited power, together with security concerns, can push certain nodes to refrain from cooperating. Such nodes will thus act as parasites, while the others will unawarely keep on trusting them for what concerns the mutual service agreement. In this paper we show how energy consumption in Ad Hoc Networks can be dramatically reduced if we stimulate cooperation by providing mechanisms for the detection and isolation of selfish nodes. We present a novel routing protocol exploiting a behavior-tracking algorithm based on game theory and allowing traffic to be forwarded only towards cooperative nodes. Through extensive simulations, we show how we can significantly reduce power wastage at the same time maximizing the delivery...
Petri net based evaluation of energy consumption in wireless sensor nodes
Journal of High Speed Networks, 2013
ABSTRACT Wireless Sensor Networks have proven their capability to deal with problems where wide a... more ABSTRACT Wireless Sensor Networks have proven their capability to deal with problems where wide and hardly accessible areas need to be monitored. Among the other systems there are also sensor networks in which nodes can voluntarily modify their positions to better adapt to changes of monitored phenomenon. One of the major issues arising in these situations is the energy consumption: as all the movements affect the batteries lifetime, the life of a sensor can be extended by equipping the device with power generators that exploit renewable sources, albeit this solution does not always avoid a full battery discharge. In this paper a Fluid Stochastic Petri Net modelling framework is presented to provide a wide evaluation of all the factors that contribute to the energy dissipation in mobile wireless sensor nodes. The framework allows the generation of extensible and composable models capable to evaluate the energy consumption due to sensing, communication and movement functions as well as the impact of power saving mechanisms on the energetical balance of the node. The approach is applied to a marine sensing problem and is validated by comparing the model analysis results with experimental results achieved through an existing off-the-shelf sensor network simulator.
Estimation of the Energy Consumption of Mobile Sensors in WSN Environmental Monitoring Applications
2013 27th International Conference on Advanced Information Networking and Applications Workshops, 2013
The increasing necessity to have wireless sensor nodes capable to be active for a long time witho... more The increasing necessity to have wireless sensor nodes capable to be active for a long time without battery recharge asks for technologies and methods that can anticipate the level of energy drain in these devices. In this paper a modelling approach based on Fluid Stochastic Petri Nets is proposed. The main contribution of the paper is the definition of a model to estimate single node performance in presence of several energy consuming entities. The definition of this single node model is relevant in order to properly support the design of more complex network topologies. The paper also reports first experimental results on model analysis mainly conducted by simulation.
Journal of Network and Computer Applications, 2016
Energy saving is currently one of the most challenging issues for the Internet research community... more Energy saving is currently one of the most challenging issues for the Internet research community. Indeed, the exponential growth of applications and services induces a remarkable increase in power consumption and hence calls for novel solutions which are capable to preserve energy of the infrastructures, at the same time maintaining the required Quality of Service guarantees. In this paper we introduce a new mechanism for saving energy through intelligent switch off of network links. The mechanism has been implemented as an extension to the Open Shortest Path First routing protocol. We first show through simulations that our solution is capable to dramatically reduce energy consumption when compared to the standard OSPF implementation. We then illustrate a real-world implementation of the proposed protocol within the Quagga routing software suite.
Effects of Cooperation on Wireless Ad Hoc Network Performance
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2015
Unfairness in wireless ad hoc networks is often due to the different ways the single nodes decide... more Unfairness in wireless ad hoc networks is often due to the different ways the single nodes decide to participate in relay operations. We propose to introduce a dedicated ad hoc routing protocol based on results of game theory to force the cooperation of less operative nodes and mitigate the effort of overwhelmed ones. Simulations on an experimental testbed show a better distribution of the energy consumption and an increased fairness in the average delivery ratio achieved by nodes, as well as a prolonged network lifetime.
Introducing QoS awareness in Tel programming: QTcl
Converged Networking, 2003
IEEE Wireless Communications, 2003
Service Level Indication - A Proposal for QoS Monitoring in SLA-based Multidomain Networks
INTERWORKING, 2002
Configurazione di nodi wireless con supporto della qualità del servizio
... wireless perché in ogni punto può esserci copertura fornita da un Access Point che a sua volt... more ... wireless perché in ogni punto può esserci copertura fornita da un Access Point che a sua volta si trova nella zona di copertura di un altro Access Point. Page 9. ... 11 sulla gestione delle politiche di alcuni sistemi (nel caso più comune Internet) ...
Active Service Management in QoS-enabled Networks
ABSTRACT In the recent years there has been an increasing request of network services like distri... more ABSTRACT In the recent years there has been an increasing request of network services like distributed caching, VPN creation or remote process control. However, the possibility of exploiting this kind of services is not widespread and in some cases a long time is required to achieve the most appropriate setup. In fact, while traditional Service Providers just had to supply connectivity to the network, the services they offer nowadays are much more focused around the end-user. This trend has brought the research toward the design of new interaction models between users and providers, moving from a "one-size-fit-all" service to a variety of possible services, each with specific needs in terms of quality and availability. It is clear, therefore, that in such scenario users will need to "negotiate" with next generation providers the specific features of the advanced service instance they are interested in. In this context, we believe that active networks can play a fundamental role. This paper presents a framework for the provisioning and management of network services based on the active network technology. In particular we will focus our attention on the design of a novel paradigm for the provisioning of VPN services. A discussion about the solutions we envisage to allow remote network configuration and management will also be provided.
7th Tcl/Tk Conference, 2000 [Technical Program]
A number of distributed applications require communication services with Quality of Service (QoS)... more A number of distributed applications require communication services with Quality of Service (QoS) guarantees. Among the actions undertaken by the Internet Engineering Task Force (IETF) with regard to the end-to-end QoS provisioning issue in the Internet, the definition ...
Universitр degli Studi “Federico II” di Napoli DIS, Dipartimento di Informatica e Sistemistica Via Claudio, 21 80125, Napoli
Greening Ah Hoc Networks through Detection and Isolation of Defecting Nodes
An Approach to Multi-Domain Service Management in SLS-Based Networks
An Active Network approach to QoS-enabled Virtual Private Networks
DiVA: QoS-aware streaming of multimedia content over the Internet
In the last few years, the availability of new communication technologies has brought to the deve... more In the last few years, the availability of new communication technologies has brought to the development of a number of distributed multimedia applications. In particular, the availability of multicast support for IP applications has laid the grounds to the adoption of new paradigms for multimedia ...
SLAM (Service Level Agreement Manager) services: control and management of phone channel bandwidth on Premium IP Network
ABSTRACT This work presents an advanced service implemantation regarding an automatic control and... more ABSTRACT This work presents an advanced service implemantation regarding an automatic control and management of phone channels bandwidth requirements over a Premium IP (PIP) network. This service is implemented by the SLAM (Service Level Agreement Manager) on the Intelligent Node based on the Active Network technology. During the last years "Voice over IP" (VoIP) and IP Telephony has gained an unprecedented success (due to both market and technology evolution): nowadays the main push towards the use of VoIP is the lower cost of the IP network connection with respect to traditional networks. Though such networks do not represent a plug-and-play solution to voice delivery, they may disclose a good potential if opportunely rearranged so to be able to support several types of traffic on the same infrastructure. One network for all services: traditional phone, advanced phone with messaging services, data transfer, video streaming and TV broadcasting. Therefore the main issue we have to cope with is the integration of several services on the same network infrastructure, thanks to the use of a flexible network protocol like IP, appropriately modified with the introduction of QoS (Quality of Service) features.
Transparent and Automatic SLA Management moving towards Proactive Networks
Nowadays new services and new network architectures require definite contracts between users and ... more Nowadays new services and new network architectures require definite contracts between users and TO (Telecom Operator) or ISP (Internet Service Provider). These contracts, known as SLA (Service Level Agreement), rely on capabilities of new networks (PIP, Premium IP ...
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Papers by Maurizio D'Arienzo