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2013 | Buch

Carrier-Grade Networks toward the Future -NGN and Its Issues- Kapitel lesen Erstes Kapitel lesen

Green Communication and Networking

Second International Conference, GreeNets 2012, Gandia, Spain, October 25-26, 2012, Revised Selected Papers

herausgegeben von: Jaime Lloret Mauri, Joel J. P. C. Rodrigues

Verlag: Springer Berlin Heidelberg

Buchreihe : Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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Über dieses Buch

This book constitutes the thoroughly refereed proceedings of the Second International Conference, GreeNets 2012, held in Gaudia, Spain, in October 2012. The 11 revised full papers presented were carefully selected and reviewed. These papers represent 23.68% of the submissions and cover topics such as communications and networking, energy-efficient network architecture and protocols, systems and technologies, and energy-efficient management.

Inhaltsverzeichnis

Frontmatter

Green Communications and Networking

Carrier-Grade Networks toward the Future -NGN and Its Issues-
Abstract
Next Generation Network is designed as the next generation carrier- grade network. Reflecting the ICT trends, NGN adopts packet-based network to flexibly accommodate telephony and data traffics. The IP is adopted as the network layer protocol with additional resource and admission control functionalities enabling QoS management. This paper describes global ICT trends, outline of NGN and its issues toward the future.
Koichi Asatani
A Rendezvous Mobile Broker for Pub/Sub Networks
Abstract
On the current Internet, Publish/Subscribe (Pub/Sub) systems are gaining popularity as efficient, simple, and scalable communication mechanisms. Mobile Pub/Sub systems are the next step for distributed Pub/Sub networks. On the other hand, the constrained characteristics of mobile nodes can limit the subscription expressiveness of the content consumers, and the overlaying applications and services. This paper describes a mobile broker model, that we call Rendezvous Mobile Broker, for integrating mobile nodes as fully-functional brokers. RMBs can delegate Pub/Sub tasks to other brokers and extend the subscription expressiveness in runtime; so, this delegation improves the mobile Pub/Sub systems’ suitability for scenarios with multiple content types.. This paper also describes a subscription allocation algorithm for extending the amount of subscriptions the mobile broker supports, in the form of topic-based subscriptions. Finally, we describe a proof of concept and validate the algorithms using real devices.
Augusto Morales Dominguez, Tomas Robles, Ramon Alcarria, Edwin Cedeño
Router Power Consumption Analysis: Towards Green Communications
Abstract
In recent years, the number of network devices which are being used in new network infrastructure and intelligent buildings, are growing more and more. Because these devices can often have high processing activity, we must consider their power consumption. Their energy requirements may vary depending on their operation mode, their processing capacity and even the type of devices to which are connected. The ability to determine exact consumption of network can provide an optimal network design and the other auxiliary systems, such as cool system, which may be necessary for the proper operation of the network. In this paper we determine the power consumption generated by network devices of different manufacturers and models. These tests allow us to see the energy consumed when they are in await mode and when they are working, running a routing protocol in order to interconnect different networks, promoting the development of the sustainable Green Networks.
Sebastián Andrade-Morelli, Eduardo Ruiz-Sánchez, Sandra Sendra, Jaime Lloret
RDAP: Requested Data Accessibility Protocol in Vehicular Sensor Networks
Abstract
Vehicular Sensor Networks (VSNs) are an emerging paradigm in vehicular networks. This new technology uses different kind of sensing devices available in new vehicles, to gather information in order to provide safer, efficient and comfort for roads users. One of the VSNs challenges is how to deal with dynamic data collection. This paper proposes a new multi-hop data collection and dissemination scheme based on data replication on VSNs in an urban scenario. The aim of our proposal scheme is to achieve a high accessibility to requested data while maintaining a low level of channel utilization. The simulation results show that this protocol can achieve significant performance benefits.
Mansour Louiza, Moussaoui Samira
An Adaptive Cross-Layer Approach for Energy-Efficient and QoS-Constrained Multimedia Transmission over Wireless Channels
Abstract
The main goal of research and industrial work in wireless telecommunications has been to maximize performance or reduce energy consumption to lengthen the battery life of mobile devices. The challenge in the next future is to make green telecommunications networks, and specifically wireless devices that present the highest energy consumption coefficient per bit transmitted among all the networking devices. However, making a network device green can cause performance deterioration. The target of this paper is to propose a cross-layer approach for the transmission of multiplexed rate-controlled multimedia streams over wireless channels. The proposed approach is adaptive in both the video sources and the wireless transmitter. To this purpose this paper proposes an Energy-efficient ARQ protocol with five possible transmission laws, in order to exploit the correlation of the wireless channel behavior. In addition, in order to compensate transmission bandwidth reduction due to the energy saving policies, a source Rate Controller is introduced. Finally, using an analytical model of the system, the transmission laws are compared, and some guidelines are provided to choose one of them and design its parameters.
Alfio Lombardo, Carla Panarello, Giovanni Schembra
Evaluation of Voltage Stabilization on a SmartGrid Simulation System for Introduction of EV
Abstract
Recently, attention has been focused on whether the SmartGrid could work efficiently in an energy network. The subject of our study is the electric vehicle (EV), which has been proposed as a potential chargeable/dischargeable part of the power grid infrastructure. As energy is transferred between an EV and the power grid, it is possible to regulate energy on the entire grid via charging and discharging the EV battery. In the future, it may also be possible to stabilize energy within the system, using information technology control embedded in the network of the SmartGrid. Compared with a case in which energy storage is fixed, more complex control is needed when EV technology is used. This study evaluates these circumstances using a simulated system.
Keiko Karaishi, Masato Oguchi
Capacity Planning for Enterprise Green Communications
Abstract
Nowadays, the volume of data transferred in an enterprise information network has raised inexorably high, thereby consuming more power and releasing more carbon-di-oxide into the atmosphere. Typical enterprise networks with fiber-optic medium for transferring data at the backbone are forced to limit the increase in backbone traffic to offer a speedy, energy efficient and environment friendly communications. We have proposed a capacity planning scheme based on molecular assembly (MA) to convert a single clustered network into a multi-clustered network, thereby reducing the backbone traffic and managing CO2 emission. The capacity planning scheme starts by discovering the distance forces existing among the nodes; moreover, it integrates the highly associated nodes together into various clusters. The repeated discovery process and the optimized assembly process form a set of optimized clusters with reduced backbone traffic, thereby reducing CO2 emissions. Our experimental results within MA for a non-clustered enterprise network of 60 nodes, quantifying backbone traffic and CO2 emission with oil fuel as the source of electricity generation shows that the proposed MA algorithm manages to reduce the backbone traffic by 42%, and thereby reducing the amount of CO2 emission by 2.5 tons in a year of operation.
Sami J. Habib, Paulvanna N. Marimuthu
Energy Consumption of Wireless Network Access Points
Abstract
The development of low cost technology based on IEEE 802.11 standard permits to build telecommunication networks at low cost, allowing providing Internet access in rural areas in developing countries. The lack of access to the electrical grid is a problem when the network is being developed in rural areas, so that wireless access points should operate using solar panels and batteries. Many cases can be found where the energy consumption becomes a key point in wireless network design. In this paper we present a comparative study of the energy consumption of several wireless network access points. We will compare the energy consumption of different brands and models, for several operation scenarios and operating modes. Obtained results allow us to achieve the objective of this article, that is, promote the development of wireless communication networks energetically efficient.
Sebastián Andrade-Morelli, Eduardo Ruiz-Sánchez, Emilio Granell, Jaime Lloret
Astroparticle Physics and Green Communication and Networking: A Symbiosis
Abstract
In this paper, the links between astroparticle physics and green communication and networking are described. Due to the advanced scientific and technological frame and the need of green networking that the astroparticle facilities and experiments have, good synergies between both fields can appear. Examples of these synergies of using green networking and communication technologies in deep-sea neutrino telescopes (such as the data acquisition and communication systems of ANTARES, and the KM3NeT acoustic positioning and monitoring system) are also presented.
Miguel Ardid
Exploiting SCTP Multistreaming to Reduce Energy Consumption of Multiple TCP Flows over a WLAN
Abstract
The energy efficiency of a wireless client is an important issue for wireless network environments. A common strategy for energy saving in wireless network devices is to remain in sleep mode when data are not being transmitted or received. However, when multiple TCP flows are established from a wireless client, determination and control of sleep timings are difficult. In addition, frequent state transitions between active and sleep modes consume energy, resulting in a reduction in energy efficiency. In this paper, we propose an energy-efficient method for multiple TCP flows in wireless LAN (WLAN) environments. The proposed method is termed SCTP tunneling, and aggregates multiple TCP flows into a single SCTP association between a wireless client and access point to control packet transmission and reception timings. Furthermore, SCTP tunneling lengthens sleep time by transmitting and receiving multiple packets in a bursty fashion. In this study, we construct a mathematical model of the energy consumed by SCTP tunneling to assess its energy efficiency. Through numerical examples, we show that the proposed method can reduce energy consumption by up to 69%.
Masafumi Hashimoto, Go Hasegawa, Masayuki Murata
A Metropolitan-Scale Testbed for Heterogeneous Wireless Sensor Networks to Support CO2 Reduction
Abstract
There exist two major contributions of network technology to reduce CO2 levels: reducing the energy consumption of the network itself, and supporting areas of application to reduce CO2 levels. The impact of the latter is potentially higher. Therefore, we present TUDμNet, a testbed for a metropolitan-scale heterogeneous sensor network with hundreds of nodes that help monitor and control CO2 levels in urban areas. Our testbed has four major application domains where it is being applied: TU Darmstadt’s award winning solar house, where temperature and CO2 levels are monitored; an 80 year old building in which a WSN is deployed to measure ambient parameters that contribute to future energy-saving remodeling; mobile sensors mounted on the streetcars of the public tramway system to measure location-specific CO2 levels that are collected in a publicly accessible database to obtain CO2 profiles; and a hybrid sensor network in TUD’s botanical garden to measure humidity, CO2 levels and soil properties to improve the management of urban parks. In this paper we present the concepts behind the design of our testbed, its design challenges and our solutions, and potential applications of such metropolitan-scale sensor networks.
Pablo E. Guerrero, Alejandro Buchmann, Kristof Van Laerhoven, Immanuel Schweizer, Max Mühlhäuser, Thorsten Strufe, Stefan Schneckenburger, Manfred Hegger, Birgitt Kretzschmar
Backmatter
Metadaten
Titel
Green Communication and Networking
herausgegeben von
Jaime Lloret Mauri
Joel J. P. C. Rodrigues
Copyright-Jahr
2013
Verlag
Springer Berlin Heidelberg
Electronic ISBN
978-3-642-37977-2
Print ISBN
978-3-642-37976-5
DOI
https://doi.org/10.1007/978-3-642-37977-2

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