www.jgenng.com " />
submit CrossRef Open Access Subscribe New Journal Ideal
www.jgenng.com ">

Click on image to enlarge

Indexed in Scopus

Journal of Green EngineeringJournal divested in January 2019, new journal website is: www.jgenng.com

Editor-in-Chief: Michele Albano, ISEP - Instituto Superior de Engenharia do Porto, Portugal

ISSN: 1904-4720 (Print Version),

ISSN: 2245-4586 (Online Version)
Vol: 1   Issue: 3

Published In:   April 2011

Publication Frequency: Quarterly

Search Available Volume and Issue for Journal of Green EngineeringJournal divested in January 2019, new journal website is: www.jgenng.com

Journal Description        Editorial Foreword        Read Full Articles        Editorial Board        Subscription        Indexed

A Futuristic Outlook on Business Models and Business Model Innovation in a Future Green Society

P. Lindgren and Y. Taran

Centre for Industrial Production, Aalborg University, 9220 Aalborg, Denmark;

Abstract: [+]    |    Download File [ 344KB ]

Abstract: Companies nowadays invest more capital and resources in green technologies and increasingly start to think more radically when considering their business model innovation processes. However, the development and innovation of green business models to the so called green society is a complex venture and has not been widely researched yet.
The study of green oriented innovation has intensified tremendously in the last decade due to both user demand (`pull') and the development of new mobile and wireless communication technologies (`push'), which gives hope in bringingthe green society vision into reality.
Accordingly, this paper portrays a conceptual futuristic outlook into the development of green oriented business models, and clarifies the processes of business model innovation for the future green society.

Keywords: Pbusiness model, innovation, green business models, green society

Energy Efficiency of Resource Management Architectures in Heterogeneous Wireless Networks

L. Gavrilovska, V. Rakovic and V. Atanasovski

Faculty of Electrical Engineering and Information Technologies, Ss Cyril and Methodius University Skopje, Rugjer Boskovic bb, 1000 Skopje, Macedonia;

Abstract: [+]    |    Download File [ 349KB ]

Abstract: The Heterogeneous Wireless Networks (HWN) paradigm is based on the interoperability and coexistence of different types of wireless access networks in a unified wireless heterogeneous platform. A key aspect in this concept is the management of the available resources, in terms of user perception, in the most efficient way. Therefore, Resource Management (RM) architectures are tailored to maximize the number of served users and user perception based on the perceived Quality of Service (QoS). Additionally, the energy efficiency and the efficient energy consumption management are relevant aspects in multi-interface mobile terminals due to the multiple active radio interfaces. This paper gives an insight into the energy consumption issue in heterogeneous wireless systems. The analysis focuses on the IEEE 802.21 standard and two different types of RM architectures throughout extensive simulations. The simulation results give clear representation of the energy consumption in the mobile terminals for the IEEE 802.21 and the two different types of RM architectures. The results can be used as initial guidelines for future development of energy aware resource management schemes.

Keywords: energy efficiency, resource management, heterogeneous wireless networks, IEEE 802.21

A Cloud Infrastructure to Manage protect Future Internet: The Virtual Network Operation Center

P. Donadio1, A. Cimmino1 and R. Prasad2

1Optical Network Division (OND), Alcatel Lucent Italy, 84091 Salerno, Italy;
2Department of Electronic Systems, Aalborg University, 9220 Aalborg, Denmark;

Abstract: [+]    |    Download File [ 243KB ]

Abstract: A Network Operations Center (NOC) is a place from which operators and administrators supervise, monitor and maintain a converged telecommunications networks. The NOC is the focal point for network troubleshooting, software distribution and updating, router and domain name management, performance monitoring, and coordination with affiliated networks. This paper analyzes and proposes a set of innovations for current NOC infrastructure when the NOC is virtualized, using IaaSfootnote{Infrastructure as a Service.} and PaaSfootnote{Platform as a Service.} cloud-aware facilities. The scenario described will show how the setting up and operation of the V-NOC should be enabled by emerging technologies for mobile and fixed network business and related technologies.

Keywords: cloud computing, virtualization, network management, next generation networks, Service Oriented Architecture (SOA), Service Oriented Infrastructure (SOI)

Green Communications: An Emerging Challenge for Mobile Broadband Communication Networks

E. Calvanese Strinati, A. De Domenico and L. Heraul

CEA, LETI, MINATEC, 38000 Grenoble, France;

Abstract: [+]    |    Download File [ 2241KB ]

Abstract: Worldwide mobile broadband communications networks are increasingly contributing to global energy consumption. In this paper we tackle the important issue of enhancing the energy efficiency of cellular networks without compromising coverage and users perceived Quality of Service (QoS). The motivation is twofold. First, operators need to reduce their operational energy bill. Second, there is a request of environmental protection from governments and customers to reduce CO$_2$ emissions due to information and communications technology. To this end, in this paper we first present the holistic system view design adopted in EARTH (Energy Aware Radio and neTworking tecHnologies) project. The goal is to ensure that any proposed solution to improve energy efficiency does not degrade the energy efficiency or performance on any other part of the system. Then, we focus on technical solutions related to resource allocation strategies designed for increasing diversity order, robustness and effectiveness of a wireless multi-user communication system. We investigate both standalone and heterogeneous cells deployment scenarios. In standalone cells deployment scenarios, the challenge is to reduce the overall downlink energy consumption while adapting the target of spectral efficiency to the actual load of the system and meeting the QoS. Then, with heterogeneous deployment scenarios, different cell scales that ranges from macro to micro, pico and even femto cells, potentially may share the same spectrum in a given geographical area. In such scenarios interference is the most limiting problem to achieve the desired performance. Our analysis reveals how proposed methodologies permit to achieve notable energy gain over traditional resource allocation techniques especially in not saturated scenarios.

Keywords: EARTH, green communications, energy efficiency, femtocells, interference, radio resource management

A Reality Check on Home Automation Technologies

Poul Ejnar Rovsing1 Peter Gorm Larsen2 Thomas Skjdeberg Toftegaard1 and Daniel Lux2

1Aarhus School of Engineering, Dalgas Avenue 2, 8000 Aarhus, Denmark;;
2Seluxit ApS, Kattesundet 24, 1. sal, 9000 Aalborg, Denmark;

Abstract: [+]    |    Download File [ 1988KB ]

Abstract: Buildings account for more than 35% of the energy consumption in Europe and there is a political desire to lower the general energy consumption. Therefore a step towards more sustainable lifestyle could be to use home automation to optimize the energy consumption ``automatically''. One of the challenges to make this a reality is to make this kind of technology available at an affordable price and easy to get installed. In order for non-technical users to invest in this kind of technology it is important to guard against vendor lock-in. Thus, interoperability between devices from different companies will be essential. In this paper we report about some of the remaining challenges before this can become a reality. In addition we reflect upon the future trends that we foresee in this market.

Keywords: home automation, wireless, protocols, energy saving, interoperability

Energy Efficiency as Input for Context-Aware Group-Based Communications

Nuno Coutinho1, Tiago Condeixa1, Susana Sargento1and Augusto Neto1,2

1Instituto de Telecomunicaoes, University of Aveiro, 3810-193 Aveiro, Portugal;
2Instituto de Informatica, Universidade Federal de Goias, 74001-970 Goiania, Brazil;

Abstract: [+]    |    Download File [ 3046KB ]

Abstract: Heterogeneity will prevail in Future Networks at many technology levels, including devices, access networks, services and applications. Moreover, the exponential proliferation of mobile computing has been followed by concerns and research efforts regarding a sustainable development of wireless systems, specially related with energy efficiency. The envisioned future networking environments will be able to build a very rich source of information that can be wisely used, not only to improve users' service perception, but also to enhance network performance at different perspectives (e.g., quality of service, resource management and energy consumption). We believe that this is the main reason behind the increasingly popular concept of context-awareness. Current context-driven architectures aim to provide a platform to enable personalized services and smart networking, adapting contents and the way they are delivered to the users according to their particular context (device, available energy and preferences) and the network and environment context (location, technologies and energy consumed). However, given the proliferation of group-based communications and consequent traffic demands, we show in this paper how context information, including energy-related context, may influence content delivery to users, employing the information available to create groups of users according to their common capabilities. This way, we aim to achieve a higher level of personalization in multiparty services, improving users' quality of experience. Through a service-aware group-oriented content delivery framework, we employ algorithms for core and access network selection that are flexible enough to be guided by any constraint. The developed selection scheme uses context information from user, network and environment to decide, among the available networks, the most suitable one regarding its communications needs and optimizing network constraints, such as quality of service provided and energy required. The outcomes obtained through the simulation of the proposed framework show that context-based grouping and network selection are able to improve the users' quality of experience.

Keywords: green computing, multicast, quality of service, overlay, context-awareness, heterogeneity

River Publishers: Journal of Green Engineering<sup><font color=#f91b02>Journal divested in January 2019, new journal website is: <a href="http://www.jgenng.com/">www.jgenng.com</a> </font></sup>