Design of a Traffic-Aware Governor for Green Routers

Today the reduction of energy consumption in telecommunications networks is one of the main goals to be pursued by manufacturers and researchers. In this context, the paper focuses on routers that achieve energy saving by applying the frequency scaling approach. The target is to propose an analytical model to support designers in choosing the main configuration parameters of the Router Governor in order to meet Quality of Service (QoS) requirements while maximizing energy saving gain. More specifically, the model is used to evaluate the input traffic impacts on the choice of the active router clock frequencies and on the overall green router performance. A case study based on the open NetFPGA reference router is considered to show how the proposed model can be easily applied to a real case scenario

A cloud-enabled small cell architecture in 5G networks for broadcast/multicast services

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The evolution of 5G suggests that communication networks become sufficiently flexible to handle a wide variety of network services from various domains. The virtualization of small cells as envisaged by 5G, allows enhanced mobile edge computing capabilities, thus enabling network service deployment and management near the end user. This paper presents a cloud-enabled small cell architecture for 5G networks developed within the 5G-ESSENCE project. This paper also presents the conformity of the proposed architecture to the evolving 5G radio resource management architecture. Furthermore, it examines the inclusion of an edge enabler to support a variety of virtual network functions in 5G networks. Next, the improvement of specific key performance indicators in a public safety use case is evaluated. Finally, the performance of a 5G enabled evolved multimedia broadcast multicast services service is evaluated.Peer ReviewedPostprint (author's final draft

Sviluppo sostenibile di Reti e Servizi di Telecomunicazioni

Sustainable development of telecommunication network is related to the provisioning of new architectures and services aware of current and future needs of people. This reaserch work wants to analyze aspects related to the sustainable development in general and their relation with the telecommunication networks and services in order to help designing the Internet of the future. The first step has been related to a deep analysis on the sustainable development and the work carried on by the United Nations in the last few years. This concept has been enriched thanks to the work done by the Internet Society which identified gaps to be bridged from different perspectives. The main goal of this work is to explore technological aspects that could help out the future Internet and the telecommunication world to meet requirements supporting the sustainable development. The gaps identified during this analysis were the followings: High costs, High environmental impact, Low flexibility and scalability, Low reliability and relisilience. The main results of the research activity here discussed is the proposal of a new high level architecture that integrates new kind of devices and embraces the network as a whole. To properly support the sustainable development, four technological drivers have been individuated and they are briefly listed below: Energy efficiency of network devices, Software Defined Networking (SDN), Network Function Virtualization (NFV), Cloud and Fog computin

Modeling Temperature and Dissipation Behavior of an Open Multi-Frequency Green Router

Development of green routers aimed at saving energy when the input traffic is low has the positive side effect of reducing the working temperature of their internal components. This idea can encourage the realization of smaller scale routers, but this process has to be supported by the confidence that temperature remains in a given range. For this reason, the target of this paper is to propose an analytical discrete-time Markov model that helps green router designers to calculate in advance the temperature statistics of a router, for given input traffic statistics and energy saving law applied by the router Governor, which is an entity which decides the router policy to be adopted. At the same time the model evaluates the obtained energy saving gain. The proposed model is applied to a case study to show how it can be used to support the design of the router Governor parameters to achieve the target of maintaining the mean temperature below a given threshold

Management of mission critical public safety applications: the 5G ESSENCE Project

To address the limitations of legacy Public Safety (PS) solutions, as narrow bandwidth, high deployment cost and poor flexibility, the 5G cellular systems have been proposed. The architecture proposed by the 5G ESSENCE project is based on a cloud-enabled small cell infrastructure with a fully distributed orchestration architecture leveraging multi-access technologies in 5G. Furthermore, SDN and NFV are exploited, with MEC, to create flexible slices for dedicated mission critical public safety applications also at the edge of the network. This is shown by describing as the mission critical push-to-talk services have been implemented in a real testbed.Peer ReviewedPostprint (published version

Portable Nanocomposite System for Wound Healing in Space

It is well known that skin wound healing could be severely impaired in space. In particular, the skin is the tissue at risk of injury, especially during human-crewed space missions. Here, we propose a hybrid system based on the biocompatible poly 2-hydroxyethyl methacrylate (pHEMA) to actively support a nanocontainer filled with the drug. Specifically, during the cryo-polymerization of HEMA, halloysite nanotubes (HNTs) embedded with thymol (Thy) were added as a component. Thy is a natural pharmaceutical ingredient used to confer wound healing properties to the material, whereas HNTs were used to entrap the Thy into the lumen to ensure a sustained release of the drug. The as-obtained material was characterized by chemical–physical methods, and tests were performed to assess its ability for a prolonged drug release. The results showed that the adopted synthetic procedure allows the formation of a super absorbent system with good swelling ability that can contain up to 5.5 mg of Thy in about 90 mg of dried sponge. Releasing tests demonstrated the excellent material’s ability to perform a slow controlled delivery of 62% of charged Thy within a week. As humans venture deeper into space, with more extended missions, limited medical capabilities, and a higher risk of skin wounds, the proposed device would be a versatile miniaturized device for skin repair in space

Management of mission critical public safety applications: the 5G ESSENCE Project

To address the limitations of legacy Public Safety (PS) solutions, as narrow bandwidth, high deployment cost and poor flexibility, the 5G cellular systems have been proposed. The architecture proposed by the 5G ESSENCE project is based on a cloud-enabled small cell infrastructure with a fully distributed orchestration architecture leveraging multi-access technologies in 5G. Furthermore, SDN and NFV are exploited, with MEC, to create flexible slices for dedicated mission critical public safety applications also at the edge of the network. This is shown by describing as the mission critical push-to-talk services have been implemented in a real testbed.Peer Reviewe