05-07-2013, 04:10 PM
GREEN COMMNICATION
GREEN COMMNICATION.docx (Size: 335.88 KB / Downloads: 23)
ABSTRACT
Recently the concern on energy efficiency in wireless communications has been growing rapidly as energy consumption increasingly becomes a global environment problem. Lots of research and development efforts have been spent in wireless industry, aiming for energy efficient solutions which lead to green wireless communications. In this paper we provide a brief overview on those efforts, with an emphasis on introducing energy efficiency metrics. Since energy efficiency metrics are indicators of efficiency, understanding those metrics provides us a better view on how energy efficiency can be achieved in wireless systems/networks. Observing energy is a concern at every corner of a wireless system/network, we describe those metrics from at component, equipment and system/networks level, respectively. From our observation, energy efficiency metrics for components and equipments have been well established. However, studied for system/network level solutions and metrics deserve more attention. We believe new energy efficient architecture and associated metrics will be the key for the energy consumption problem in wireless industry.
INTRODUCTION:
Nowadaysthe whole world of telecommunications and information communities is facing a more and more serious challenge, namely on one side the transmitted multimedia-rich data are exploding at an astonishing speed and on the other side the total energy consumption by the communication and networking devices and the relevant global CO2 emission are increasing terribly. It has been pointed out that "currently 3% of the world-wide energy is consumed by the ICT (Information & Communications Technology) infrastructure that causes about 2% of the world-wide CO2 emissions, which is comparable to the world-wide CO2 emissions by airplanes or one quarter of the world-wide CO2 emissions by cars" [1]. According to the recent research report of Ericsson [2], energy costs account for as much as half of a mobile operator’s operating expenses. Therefore, telecommunications applications can have a direct, tangible impact on lowering greenhouse gas emissions, power consumption, and achieve efficient recycling of equipment waste. Moreover, to find radio networking solutions that can greatly improve energy-efficiency as well as resource-efficiency (Green Communications) is not only benefit for the global environment but also makes commercial sense for telecommunication operators supporting sustainable and profitable business. Within the framework of “Green Communications”, a number of paradigm-shifting technical approaches can be expected, including but not limited to energy-efficient network architecture & protocols, energy-efficient wireless transmission techniques (e.g., reduced transmission power & reduced radiation), cross-layer optimization methods, and opportunistic spectrum sharing without causing harmful interference pollution (i.e. Green Spectrum).
Methodology
IEEE OnlineGreenComm relies on established processes for manuscript submission,
review, and publication, which are implemented by IEEE ComSoc’s other major conferences. Throughout the paper handling process, authors have been supported
by the EDAS management system.
IEEE OnlineGreenComm’s distinct feature is the use of an online conferencing
environment, which will allow authors to present their accepted papers and to
discuss them with the audience during live sessions. Each session will be guided by a moderator, who takes the role of a classical session chair, and who will also
conduct the session in technical terms to guarantee ease of participation.
While speakers present their research live, the audience may post questions
at any time, which will be collected and handed over to the speaker at the end of a presentation. After each presentation, selected questions will be shared with all
participants and answered by the speaker. To participate online, any popular
Web browser will be sufficient and no special software will be required.
CONCLUSION:
Cognitive Radio and Green Communications are two concepts which are closely tied together, because Cognitive Radio is about sharing a scarce resource, being aware of the global environment and its context in order to take it into account, and because it addresses topics like energy saving, electromagnetic radiation reduction, which have an environmental impact