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Gianfranco Nencioni is an Associate Professor at the Department of Electrical Engineering and Computer Science, University of Stavanger, Norway. He received his Ph.D. in Information Engineering from the University of Pisa, Italy, in 2012. In 2011, he was a visiting Ph.D. student with the Computer Laboratory, University of Cambridge, U.K. He was a Post-Doctoral Fellow with the University of Pisa from 2012 to 2015 and with the Norwegian University of Science and Technology, Norway, from 2015 to 2018. His research activity is focused on modeling and resource allocation in emerging networking technologies.
A smart city is an urban area that collects data using various electronic methods and sensors. Smart cities rely on Information and Communication Technologies (ICT) and aim to improve the quality of services by managing public resources and focusing on comfort, maintenance, and sustainability. The fifth generation (5G) of wireless mobile communication enables a new kind of communication network to connect everyone and everything. 5G will profoundly impact economies and societies as it will provide the necessary communication infrastructure required by various smart city applications. Intelligent Transporting System (ITS) is one of the many smart city applications that can be realized via 5G technology. The paper aims to discuss the impact and implications of 5G on ITS from various dimensions. Before this, the paper presents an overview of the technological context and the economic benefits of the 5G and how key vertical industries will be affected in a smart city, i.e., energy, healthcare, manufacturing, entertainment, and automotive and public transport. Afterward, 5G for ITS is introduced in more detail.
Ali Gohar; Gianfranco Nencioni. The Role of 5G Technologies in a Smart City: The Case for Intelligent Transportation System. Sustainability 2021, 13, 5188 .
AMA StyleAli Gohar, Gianfranco Nencioni. The Role of 5G Technologies in a Smart City: The Case for Intelligent Transportation System. Sustainability. 2021; 13 (9):5188.
Chicago/Turabian StyleAli Gohar; Gianfranco Nencioni. 2021. "The Role of 5G Technologies in a Smart City: The Case for Intelligent Transportation System." Sustainability 13, no. 9: 5188.
In this paper, we present an approach and an algorithm aimed at minimising the energy consumption of enterprise Wireless Local Area Networks (WLANs) during periods of low user activity. We act on two network management aspects: powering off some Access Points (APs), and choosing the level of transmission power of each AP. An efficient technique to allocate the user terminals to the various APs is the key to achieving this goal. The approach has been formulated as an integer programming problem with nonlinear constraints, which comes from a general but accurate characterisation of the WLAN. This general problem formulation has two implications: the formulation is widely applicable, but the nonlinearity makes it NP-hard. To solve this problem to optimality, we devised an exact algorithm based on a customised version of Benders’ decomposition method. The computational results proved the ability to obtain remarkable power savings. In addition, the good performance of our algorithm in terms of solving times paves the way for its future deployment in real WLANs.
Rosario Garroppo; Gianfranco Nencioni; Luca Tavanti; Bernard Gendron; Maria Scutellà. Optimal Access Point Power Management for Green IEEE 802.11 Networks. Sensors 2021, 21, 2076 .
AMA StyleRosario Garroppo, Gianfranco Nencioni, Luca Tavanti, Bernard Gendron, Maria Scutellà. Optimal Access Point Power Management for Green IEEE 802.11 Networks. Sensors. 2021; 21 (6):2076.
Chicago/Turabian StyleRosario Garroppo; Gianfranco Nencioni; Luca Tavanti; Bernard Gendron; Maria Scutellà. 2021. "Optimal Access Point Power Management for Green IEEE 802.11 Networks." Sensors 21, no. 6: 2076.
The fifth-generation (5G) of cellular networks is currently under deployment by network operators, and new 5G end-user devices are about to be commercialized by many manufacturers. This is just a first step in the 5G’s development, and the true potential of 5G is still far from being reached. Currently, one of the main 5G technologies under the interest of the research community is the network slicing. Network slicing will allow exploiting the 5G infrastructure to flexibly and efficiently provide heterogeneous services (e.g., voice communication, video streaming, e-health, vehicular communication). Like every new technology, one of the critical aspects that need to be considered is the security. In this article, we spotlight the security in 5G network slicing. We highlight threats and recommendations, which are presented in terms of life-cycle security, intra-slice security, and inter-slice security. Furthermore, we identify and discuss open security issues related to network slicing.
Ruxandra F. Olimid; Gianfranco Nencioni. 5G Network Slicing: A Security Overview. IEEE Access 2020, 8, 99999 -100009.
AMA StyleRuxandra F. Olimid, Gianfranco Nencioni. 5G Network Slicing: A Security Overview. IEEE Access. 2020; 8 (99):99999-100009.
Chicago/Turabian StyleRuxandra F. Olimid; Gianfranco Nencioni. 2020. "5G Network Slicing: A Security Overview." IEEE Access 8, no. 99: 99999-100009.
Many study programs include courses on communication technology. All these courses explain the basis of communication technology, but they have different levels of detail depending on the study program and the related organization. Several courses include experimental activities, and some of these are based on certification related to a network device manufacturer. This article is based on the experience at the University of Stavanger, Norway, where two Bachelor-level courses based on the Cisco Certified Network Associate are offered. This article generalizes the outcome from this experience and aims to provide a guideline to create similar courses in different study programs. This article will address the course syllabus, the laboratory activity, and the examination by giving some best practice suggestions.
Gianfranco Nencioni; Terje Per Karstad. CCNA-Based Communication Technology Courses. IEEE Communications Magazine 2020, 58, 102 -108.
AMA StyleGianfranco Nencioni, Terje Per Karstad. CCNA-Based Communication Technology Courses. IEEE Communications Magazine. 2020; 58 (4):102-108.
Chicago/Turabian StyleGianfranco Nencioni; Terje Per Karstad. 2020. "CCNA-Based Communication Technology Courses." IEEE Communications Magazine 58, no. 4: 102-108.
Besmir Tola; Gianfranco Nencioni; Bjarne E. Helvik. Network-Aware Availability Modeling of an End-to-End NFV-Enabled Service. IEEE Transactions on Network and Service Management 2019, 16, 1389 -1403.
AMA StyleBesmir Tola, Gianfranco Nencioni, Bjarne E. Helvik. Network-Aware Availability Modeling of an End-to-End NFV-Enabled Service. IEEE Transactions on Network and Service Management. 2019; 16 (4):1389-1403.
Chicago/Turabian StyleBesmir Tola; Gianfranco Nencioni; Bjarne E. Helvik. 2019. "Network-Aware Availability Modeling of an End-to-End NFV-Enabled Service." IEEE Transactions on Network and Service Management 16, no. 4: 1389-1403.
Network and Telecom operators are continuously embracing the adoption of Network Function Virtualization (NFV) as a means to provide more agile, flexible and cost-efficient services. Many telecommunication services need to possess carrier-grade quality of service; therefore, future NFV-enabled telecom services should present high levels of availability. In this paper, we present a composed availability model of NFV-enabled network services under different availability modes, namely Standard Availability, Cold Protection, and Hot Protection. We model and analyze the availability of NFV-enabled network services for each of the availability modes aiming at finding the best redundancy configuration to ensure carrier-grade quality. Through discrete-event simulation analysis we are able to identify the most suitable redundancy configuration for each of the availability modes.
Besmir Tola; Gianfranco Nencioni; Bjarne E. Helvik; Yuming Jiang. Modeling and Evaluating NFV-Enabled Network Services under Different Availability Modes. 2019 15th International Conference on the Design of Reliable Communication Networks (DRCN) 2019, 1 -5.
AMA StyleBesmir Tola, Gianfranco Nencioni, Bjarne E. Helvik, Yuming Jiang. Modeling and Evaluating NFV-Enabled Network Services under Different Availability Modes. 2019 15th International Conference on the Design of Reliable Communication Networks (DRCN). 2019; ():1-5.
Chicago/Turabian StyleBesmir Tola; Gianfranco Nencioni; Bjarne E. Helvik; Yuming Jiang. 2019. "Modeling and Evaluating NFV-Enabled Network Services under Different Availability Modes." 2019 15th International Conference on the Design of Reliable Communication Networks (DRCN) , no. : 1-5.
The fifth generation (5G) of cellular networks promises to be a major step in the evolution of wireless technology. 5G is planned to be used in a very broad set of application scenarios. These scenarios have strict heterogeneous requirements that will be accomplished by enhancements on the radio access network and a collection of innovative wireless technologies. Softwarization technologies, such as Software-Defined Networking (SDN) and Network Function Virtualization (NFV), will play a key role in integrating these different technologies. Network slicing emerges as a cost-efficient solution for the implementation of the diverse 5G requirements and verticals. The 5G radio access and core networks will be based on a SDN/NFV infrastructure, which will be able to orchestrate the resources and control the network in order to efficiently and flexibly and with scalability provide network services. In this paper, we present the up-to-date status of the software-defined 5G radio access and core networks and a broad range of future research challenges on the orchestration and control aspects.
Gianfranco Nencioni; Rosario G. Garroppo; Andres J. Gonzalez; Bjarne E. Helvik; Gregorio Procissi. Orchestration and Control in Software-Defined 5G Networks: Research Challenges. Wireless Communications and Mobile Computing 2018, 2018, 1 -18.
AMA StyleGianfranco Nencioni, Rosario G. Garroppo, Andres J. Gonzalez, Bjarne E. Helvik, Gregorio Procissi. Orchestration and Control in Software-Defined 5G Networks: Research Challenges. Wireless Communications and Mobile Computing. 2018; 2018 ():1-18.
Chicago/Turabian StyleGianfranco Nencioni; Rosario G. Garroppo; Andres J. Gonzalez; Bjarne E. Helvik; Gregorio Procissi. 2018. "Orchestration and Control in Software-Defined 5G Networks: Research Challenges." Wireless Communications and Mobile Computing 2018, no. : 1-18.
The introduction of Network Function Virtualisation (NFV) represents a significant change in networking technology, which may create new opportunities in terms of cost efficiency, operations, and service provisioning. Although not explicitly stated as an objective, the dependability of the services provided using this technology should be at least as good as conventional solutions. Logical centralisation, off-the-shelf computing platforms, and increased system complexity represent new dependability challenges relative to the state of the art. The core function of the network, with respect to failure and service management, is orchestration. The failure and misoperation of the NFV Orchestrator (NFVO) will have huge network-wide consequences. At the same time, NFVO is vulnerable to overload and design faults. Thus, the objective of this paper is to give a tutorial on the dependability challenges of the NFVO, and to give insight into the required future research. This paper provides necessary background information, reviews the available literature, outlines the proposed solutions, and identifies some design and research problems that must be addressed.
Andres J. Gonzalez; Gianfranco Nencioni; Andrzej Kamisinski; Bjarne E. Helvik; Poul E. Heegaard. Dependability of the NFV Orchestrator: State of the Art and Research Challenges. IEEE Communications Surveys & Tutorials 2018, 20, 3307 -3329.
AMA StyleAndres J. Gonzalez, Gianfranco Nencioni, Andrzej Kamisinski, Bjarne E. Helvik, Poul E. Heegaard. Dependability of the NFV Orchestrator: State of the Art and Research Challenges. IEEE Communications Surveys & Tutorials. 2018; 20 (4):3307-3329.
Chicago/Turabian StyleAndres J. Gonzalez; Gianfranco Nencioni; Andrzej Kamisinski; Bjarne E. Helvik; Poul E. Heegaard. 2018. "Dependability of the NFV Orchestrator: State of the Art and Research Challenges." IEEE Communications Surveys & Tutorials 20, no. 4: 3307-3329.
Dependability of computer and communication networks is an important aspect of the customer-provider relationship in the telecommunication industry. Considering the increasing interest in Software-Defined Networking (SDN) technologies, as well as unclear understanding of dependability in the context of traffic flows in such networks, it is not clear how to define the related objectives in Service Level Agreements (SLAs), and how to estimate the risk of violation of the included dependability requirements. In this paper, we present a solution to both issues and we evaluate it in different scenarios by simulation. The results show that the proposed method is feasible and may help service providers to select the preferred recovery technique in SDN based on the estimated risk of violation of the SLA dependability requirements and known Service Level Objectives (SLOs).
Andrzej Kamisinski; Bjarne E. Helvik; Andres J. Gonzalez; Gianfranco Nencioni. Assessing the risk of violating SLA dependability requirements in software-defined networks. 2017 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN) 2017, 270 -275.
AMA StyleAndrzej Kamisinski, Bjarne E. Helvik, Andres J. Gonzalez, Gianfranco Nencioni. Assessing the risk of violating SLA dependability requirements in software-defined networks. 2017 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN). 2017; ():270-275.
Chicago/Turabian StyleAndrzej Kamisinski; Bjarne E. Helvik; Andres J. Gonzalez; Gianfranco Nencioni. 2017. "Assessing the risk of violating SLA dependability requirements in software-defined networks." 2017 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN) , no. : 270-275.
Software-defined networking (SDN) promises to improve the programmability and flexibility of networks, but also brings new challenges that need to be explored. The main objective of this paper is to include failure correlation in a quantitative assessment of the properties of SDN backbone networks to determine whether they can provide similar availability as the traditional IP backbone networks. To achieve this goal, this paper has formalized a two-level availability model that captures the global network connectivity without neglecting the essential details and which includes a failure correlation assessment. This paper proposes a modular and systematic approach for characterizing the principal minimal-cut sets in both SDN and traditional networks, and stochastic activity network models for characterizing the single network elements. To demonstrate the feasibility of the model, an extensive sensitivity analysis has been carried out on a national backbone network.
Gianfranco Nencioni; Bjarne E. Helvik; Poul E. Heegaard. Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network. IEEE Transactions on Network and Service Management 2017, 14, 1032 -1045.
AMA StyleGianfranco Nencioni, Bjarne E. Helvik, Poul E. Heegaard. Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network. IEEE Transactions on Network and Service Management. 2017; 14 (4):1032-1045.
Chicago/Turabian StyleGianfranco Nencioni; Bjarne E. Helvik; Poul E. Heegaard. 2017. "Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network." IEEE Transactions on Network and Service Management 14, no. 4: 1032-1045.
We consider a problem arising in the design of green wireless local area networks. Decisions on powering-on a set of access points (APs), via the assignment of one power level (PL) to each opened AP, and decisions on the assignment of the user terminals (UTs) to the opened APs, have to be taken simultaneously. The PL assigned to an AP affects, in a nonlinear way, the capacity of the connections between the AP and the UTs that are assigned to it. The objective is to minimize the overall power consumption of the APs, which has two components: location/capacity dimensioning costs of the APs; assignment costs that depend on the total demands assigned to the APs. We develop a branch-and-Benders-cut (BBC) method where, in a non-standard fashion, the master problem includes the variables of the Benders subproblem, but relaxes their integrality. The BBC method has been tested on a large set of instances, and compared to a Benders decomposition algorithm on a subset of instances without assignment costs, where the two approaches can be compared. The computational results show the superiority of BBC in terms of solution quality, scalability and robustness.
Bernard Gendron; Maria Grazia Scutellà; Rosario G. Garroppo; Gianfranco Nencioni; Luca Tavanti. A branch-and-Benders-cut method for nonlinear power design in green wireless local area networks. European Journal of Operational Research 2016, 255, 151 -162.
AMA StyleBernard Gendron, Maria Grazia Scutellà, Rosario G. Garroppo, Gianfranco Nencioni, Luca Tavanti. A branch-and-Benders-cut method for nonlinear power design in green wireless local area networks. European Journal of Operational Research. 2016; 255 (1):151-162.
Chicago/Turabian StyleBernard Gendron; Maria Grazia Scutellà; Rosario G. Garroppo; Gianfranco Nencioni; Luca Tavanti. 2016. "A branch-and-Benders-cut method for nonlinear power design in green wireless local area networks." European Journal of Operational Research 255, no. 1: 151-162.
Software-Defined Networking (SDN) promises to improve the programmability and flexibility of networks, but it may also bring new challenges that need to be explored. The main objective of this paper is to present a quantitative assessment of the properties of SDN backbone networks to determine whether they can provide similar availability to the traditional IP backbone networks. To achieve this goal, we have completed the following steps: i) we formalized a two-level availability model that is able to capture the global network connectivity without neglecting the essential details: ii) we proposed Markov models for characterizing the single network elements in both SDN and traditional networks: iii) we carried out an extensive sensitivity analysis of a~national and a~world-wide backbone networks. The results have highlighted the considerable impact of operational and management (O&M) failures on the overall availability of SDN. High O&M failure intensity may reduce the availability of SDN as much as one order of magnitude compared to traditional networks. Moreover, the results show that the impact of software and hardware failures on the overall availability of SDN can be significantly reduced through proper overprovisioning of the SDN controller(s).
Gianfranco Nencioni; Bjarne E. Helvik; Andres J. Gonzalez; Poul E. Heegaard; Andrzej Kamisinski. Availability Modelling of Software-Defined Backbone Networks. 2016 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshop (DSN-W) 2016, 105 -112.
AMA StyleGianfranco Nencioni, Bjarne E. Helvik, Andres J. Gonzalez, Poul E. Heegaard, Andrzej Kamisinski. Availability Modelling of Software-Defined Backbone Networks. 2016 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshop (DSN-W). 2016; ():105-112.
Chicago/Turabian StyleGianfranco Nencioni; Bjarne E. Helvik; Andres J. Gonzalez; Poul E. Heegaard; Andrzej Kamisinski. 2016. "Availability Modelling of Software-Defined Backbone Networks." 2016 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshop (DSN-W) , no. : 105-112.
We present a robust optimisation approach to energy savings in wireless local area networks, that incorporates both link capacity fluctuations and user mobility under Bertsimas and Sim's robust optimization paradigm. Preliminary computational results are discussed.
Rosario G. Garroppo; Gianfranco Nencioni; Maria Grazia Scutellà; Luca Tavanti. Robust optimisation of green wireless LANs under rate uncertainty and user mobility. Electronic Notes in Discrete Mathematics 2016, 52, 221 -228.
AMA StyleRosario G. Garroppo, Gianfranco Nencioni, Maria Grazia Scutellà, Luca Tavanti. Robust optimisation of green wireless LANs under rate uncertainty and user mobility. Electronic Notes in Discrete Mathematics. 2016; 52 ():221-228.
Chicago/Turabian StyleRosario G. Garroppo; Gianfranco Nencioni; Maria Grazia Scutellà; Luca Tavanti. 2016. "Robust optimisation of green wireless LANs under rate uncertainty and user mobility." Electronic Notes in Discrete Mathematics 52, no. : 221-228.
Rosario G. Garroppo; Gianfranco Nencioni; Gregorio Procissi; Luca Tavanti. The impact of the access point power model on the energy-efficient management of infrastructured wireless LANs. Computer Networks 2016, 94, 99 -111.
AMA StyleRosario G. Garroppo, Gianfranco Nencioni, Gregorio Procissi, Luca Tavanti. The impact of the access point power model on the energy-efficient management of infrastructured wireless LANs. Computer Networks. 2016; 94 ():99-111.
Chicago/Turabian StyleRosario G. Garroppo; Gianfranco Nencioni; Gregorio Procissi; Luca Tavanti. 2016. "The impact of the access point power model on the energy-efficient management of infrastructured wireless LANs." Computer Networks 94, no. : 99-111.
The last 5 years have seen a dramatic shift in media distribution. For decades, TV and radio were solely provisioned using push-based broadcast technologies, forcing people to adhere to fixed schedules. The introduction of catch-up services, however, has now augmented such delivery with online pull-based alternatives. Typically, these allow users to fetch content for a limited period after initial broadcast, allowing users flexibility in accessing content. Whereas previous work has investigated both of these technologies, this paper explores and contrasts them, focusing on the network consequences of moving towards this multifaceted delivery model. Using traces from nearly 6 million users of BBC iPlayer, one of the largest catch-up TV services, we study this shift from push- to pull-based access. We propose a novel technique for unifying both push- and pull-based delivery: the Speculative Content Offloading and Recording Engine (SCORE). SCORE operates as a set-top box, which interacts with both broadcast push and online pull services. Whenever users wish to access media, it automatically switches between these distribution mechanisms in an attempt to optimize energy efficiency and network resource utilization. SCORE also can predict user viewing patterns, automatically recording certain shows from the broadcast interface. Evaluations using our BBC iPlayer traces show that, based on parameter settings, an oracle with complete knowledge of user consumption can save nearly 77% of the energy, and over 90% of the peak bandwidth, of pure IP streaming. Optimizing for energy consumption, SCORE can recover nearly half of both traffic and energy savings.
Gianfranco Nencioni; Nishanth Sastry; Gareth Tyson; Vijay Badrinarayanan; Dmytro Karamshuk; Jigna Chandaria; Jon Crowcroft; Nencioni G.; Sastry N.; Badrinarayanan V.; Karamshuk D.; Chandaria J.. SCORE: Exploiting Global Broadcasts to Create Offline Personal Channels for On-Demand Access. IEEE/ACM Transactions on Networking 2015, 24, 2429 -2442.
AMA StyleGianfranco Nencioni, Nishanth Sastry, Gareth Tyson, Vijay Badrinarayanan, Dmytro Karamshuk, Jigna Chandaria, Jon Crowcroft, Nencioni G., Sastry N., Badrinarayanan V., Karamshuk D., Chandaria J.. SCORE: Exploiting Global Broadcasts to Create Offline Personal Channels for On-Demand Access. IEEE/ACM Transactions on Networking. 2015; 24 (4):2429-2442.
Chicago/Turabian StyleGianfranco Nencioni; Nishanth Sastry; Gareth Tyson; Vijay Badrinarayanan; Dmytro Karamshuk; Jigna Chandaria; Jon Crowcroft; Nencioni G.; Sastry N.; Badrinarayanan V.; Karamshuk D.; Chandaria J.. 2015. "SCORE: Exploiting Global Broadcasts to Create Offline Personal Channels for On-Demand Access." IEEE/ACM Transactions on Networking 24, no. 4: 2429-2442.
Network Function Virtualization (NFV) promises to transform the way telecom providers design and operate networks and network services. Virtualized Evolved Packet Core (vEPC) is one of the NFV use cases that has got most attention, where dependability is a major concern. In the traditional EPC, functions are deployed in proprietary network elements with proven characteristics, e.g., a defined availability, and corresponding guarantees. Hence, network operators have a firm basis for the design of a robust mobile core network. On the other hand, in the vEPC, network operators face a more challenging environment, where functions, subsystems and requirements are interrelated in a more complex manner. Hence, the assessment of the network robustness, and the design to meet dependability requirements become hard. In order to address this challenge, we provide initial guidelines to model system availability in vEPC scenarios, we propose a stochastic activity networks dependability model to assess it, and finally, we identify the most relevant factors to be considered by providers to fulfill the demanding dependability requirements of the mobile core.
Andres Gonzalez; Pal Gronsund; Kashif Mahmood; Bjarne Helvik; Poul Heegaard; Gianfranco Nencioni. Service Availability in the NFV Virtualized Evolved Packet Core. 2015 IEEE Global Communications Conference (GLOBECOM) 2014, 1 -6.
AMA StyleAndres Gonzalez, Pal Gronsund, Kashif Mahmood, Bjarne Helvik, Poul Heegaard, Gianfranco Nencioni. Service Availability in the NFV Virtualized Evolved Packet Core. 2015 IEEE Global Communications Conference (GLOBECOM). 2014; ():1-6.
Chicago/Turabian StyleAndres Gonzalez; Pal Gronsund; Kashif Mahmood; Bjarne Helvik; Poul Heegaard; Gianfranco Nencioni. 2014. "Service Availability in the NFV Virtualized Evolved Packet Core." 2015 IEEE Global Communications Conference (GLOBECOM) , no. : 1-6.
Rosario G. Garroppo; Bernard Gendron; Gianfranco Nencioni; Luca Tavanti. Energy efficiency and traffic offloading in wireless mesh networks with delay bounds. International Journal of Communication Systems 2014, 30, e2902 .
AMA StyleRosario G. Garroppo, Bernard Gendron, Gianfranco Nencioni, Luca Tavanti. Energy efficiency and traffic offloading in wireless mesh networks with delay bounds. International Journal of Communication Systems. 2014; 30 (2):e2902.
Chicago/Turabian StyleRosario G. Garroppo; Bernard Gendron; Gianfranco Nencioni; Luca Tavanti. 2014. "Energy efficiency and traffic offloading in wireless mesh networks with delay bounds." International Journal of Communication Systems 30, no. 2: e2902.
Rosario G. Garroppo; Gianfranco Nencioni; Luca Tavanti; Bernard Gendron. The greening potential of content delivery in residential community networks. Computer Networks 2014, 73, 256 -267.
AMA StyleRosario G. Garroppo, Gianfranco Nencioni, Luca Tavanti, Bernard Gendron. The greening potential of content delivery in residential community networks. Computer Networks. 2014; 73 ():256-267.
Chicago/Turabian StyleRosario G. Garroppo; Gianfranco Nencioni; Luca Tavanti; Bernard Gendron. 2014. "The greening potential of content delivery in residential community networks." Computer Networks 73, no. : 256-267.
In this paper we study a wireless access network based on the WLAN technology and enriched with features such as caching and mesh networking. This system is analysed in terms of energy efficiency and traffic offloading, two objectives that are somewhat in contrast, but both relevant to network and service providers as they directly impact the operational cost. To this aim, we developed a mathematical model of the system and solved it to optimality by means of integer linear programming. We can thus show how much saving can be achieved both in terms of energy and traffic, also considering various tradeoff points among the two contrasting objectives. A basic degree of quality of service is also accounted for.
Rosario G. Garroppo; Gianfranco Nencioni; Gregorio Procissi; Luca Tavanti; Bernard Gendron. Energy efficiency and traffic offloading in WLANs with caching and mesh capabilities. 2014 26th International Teletraffic Congress (ITC) 2014, 1 -6.
AMA StyleRosario G. Garroppo, Gianfranco Nencioni, Gregorio Procissi, Luca Tavanti, Bernard Gendron. Energy efficiency and traffic offloading in WLANs with caching and mesh capabilities. 2014 26th International Teletraffic Congress (ITC). 2014; ():1-6.
Chicago/Turabian StyleRosario G. Garroppo; Gianfranco Nencioni; Gregorio Procissi; Luca Tavanti; Bernard Gendron. 2014. "Energy efficiency and traffic offloading in WLANs with caching and mesh capabilities." 2014 26th International Teletraffic Congress (ITC) , no. : 1-6.
The paper deeply analyzes a novel network-wide power management problem, called Power-Aware Routing and Network Design with Bundled Links (PARND-BL), which is able to take into account both the relationship between the power consumption and the traffic throughput of the nodes and to power off both the chassis and even the single Physical Interface Card (PIC) composing each link. The solutions of the PARND-BL model have been analyzed by taking into account different aspects associated with the actual applicability in real network scenarios: (i) the time for obtaining the solution, (ii) the deployed network topology and the resulting topology provided by the solution, (iii) the power behavior of the network elements, (iv) the traffic load, (v) the QoS requirement, and (vi) the number of paths to route each traffic demand. Among the most interesting and novel results, our analysis shows that the strategy of minimizing the number of powered-on network elements through the traffic consolidation does not always produce power savings, and the solution of this kind of problems, in some cases, can lead to spliting a single traffic demand into a high number of paths.
Rosario G. Garroppo; Stefano Giordano; Gianfranco Nencioni; Maria Grazia Scutellà. Power-Aware Routing and Network Design with Bundled Links: Solutions and Analysis. Journal of Computer Networks and Communications 2013, 2013, 1 -16.
AMA StyleRosario G. Garroppo, Stefano Giordano, Gianfranco Nencioni, Maria Grazia Scutellà. Power-Aware Routing and Network Design with Bundled Links: Solutions and Analysis. Journal of Computer Networks and Communications. 2013; 2013 ():1-16.
Chicago/Turabian StyleRosario G. Garroppo; Stefano Giordano; Gianfranco Nencioni; Maria Grazia Scutellà. 2013. "Power-Aware Routing and Network Design with Bundled Links: Solutions and Analysis." Journal of Computer Networks and Communications 2013, no. : 1-16.