Editorial. Green Technologies for Wireless Communications and Mobile Computing. Green technology has been one of the most important issues in developing ...
www.ietdl.org Published in IET Communications Received on 16th November 2011 doi: 10.1049/iet-com.2011.0852
Special Section: Green Technologies for Wireless Communications and Mobile Computing
ISSN 1751-8628
Editorial Green Technologies for Wireless Communications and Mobile Computing
Green technology has been one of the most important issues in developing networking techniques and communication systems. Energy-efficient techniques used in networking and computing have recently received considerable attention. Green technologies foster environmental sustainability and the economics of energy efficiency. Reducing the energy consumption of computing and communication infrastructure in home, enterprise, and data centre environments by power-efficient technologies is an area of increasing importance for researchers and industry and commercial entities. The important key issues of Green technologies are related to energy efficiency in computing and promoting environmentally friendly computer technologies and systems. Green networking technologies play a significant role in reducing energy consumption in terms of connecting energy-efficient networked equipments for a variety of applications, computing frameworks, and communication environments. The goal of this Special Section is to explore the research and development of green technologies for wireless communications and mobile computing. This Special Section aims at emerging green and energyefficient technologies which can make feasible the exploitation of wireless communications and mobile computing. The call for papers for this Special Section has attracted 23 submissions from Asia, Europe and the US. Each paper was carefully evaluated by at least two reviewers. Based on the reviewing results, twelve high quality research papers were selected from all the submissions. These twelve accepted papers are divided into two categories. The first one is in exploring the problems of green wireless communications and computing for mobile communications systems. The second one is in investigating the energy-efficient issues for wireless sensor networks. At first, seven articles focus on the research issues for energy-efficient wireless communications in mobile communication systems. ‘Dual Access Points Association in Relay Networks to Conserve Mobile Terminals’ Energy’ by Hongseok Kim, Xiangying Yang, and Muthaiah Venkatachalam investigates the benefits of mobile terminals with different access points for uplink and downlink transmission to conserve mobile terminals’ energy. IET Commun., 2011, Vol. 5, Iss. 18, pp. 2595–2597 doi: 10.1049/iet-com.2011.0852
Allowing dual access points association provides a significant gain on the uplink system capacity and/or the uplink transmit power savings. ‘Sleep Mode Design for Green Base Stations’ by Rui Wang, John S. Thompson, Harald Haas, and Peter M. Grant is to design the base station sleep mode for reducing radio base station operational energy consumption in both the time and spatial domains according to the LTE (long term-evolution) standards. ‘Energy and Cost Impacts of Relay and Femtocell Deployment in LTE-Advanced’ by Chadi Khirallah, John Thompson, and Habib Rashvand studies the energy and cost impacts of relay and femtocell deployments in long term-evolution advanced (LTE-Advanced) for two scenarios of heterogeneous networks, namely a joint macrorelay network and a joint macro-femtocell network, using different relay and femtocell deployment densities. ‘Energy Efficient Radio Resource Management Strategies for Green Radio’ by Congzheng Han and Simon Armour addresses a number of key radio resource management strategies across PHY and MAC layers for reducing base station energy consumption. These strategies including power efficient link adaptation, exploitation of multi-user diversity and trading bandwidth for energy efficiency. ‘Energy-Efficient User Grouping Algorithms in MC-CDMA for Green Communications’ by Antonis Phasouliotis and Daniel K.C. So addresses energy efficient user grouping algorithms to provide power minimisation in grouped MC-CDMA (multicarrier code division multiple access) and space-time block coding MC-CDMA systems. Depending on the channel fading conditions, power control is utilised to minimise the total transmitted power under a bit error rate constraint. ‘An Adaptive Online Power Control Scheme based on the Evolutionary Game Theory’ by Sungwook Kim proposes an online power control scheme based on the evolutionary game theory. Wireless devices can adaptively adjust their power level to reach an effective network equilibrium. ‘An Energy-Efficient NEMO Scheme over a Proxy Mobile IPv6 Network’ by Seil Jeon and Younghan Kim presents an energy-efficient network mobility approach, called the proxy router based NEMO (PR-NEMO). The cost of location update overhead is reduced according to network handoff and packet-tunneling overhead. 2595
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www.ietdl.org In what follows, we have the next five articles in discussing the research issues for energy-efficient protocols and applications for wireless sensor networks. ‘An Adaptive TDMA-basedMAC Protocol for Energy Conserving and Data Transmission in Wireless Sensor Networks’ by Tz-Heng Hsu and Ping-Yi Yen presents a novel TDMAbased MAC protocol to conserve energy and increase data transmission efficiency of sensors in a cluster-based wireless sensor network. ‘CDP: An Energy-Efficient Compressed Data-Stream Protocol for Wireless Sensor Networks’ by Newlyn Erratt and Yao Liang proposes an energy-efficient data compression protocol, named compressed data-stream protocol (CDP), for data collection in wireless sensor networks. CDP is not only able to significantly reduce energy consumptions of data gathering, but also able to reduce sensor network traffic and thus avoid congestion accordingly. ‘A Power-Aware Data Dissemination Protocol for Grid-Based Wireless Sensor Networks with Mobile Sinks’ by Neng-Chung Wang and Yung-Kuei Chiang addresses a power-aware data dissemination protocol (PADD) for grid-based wireless sensor networks with mobile sinks. The energy consumptions and transmission delay can be reduced by PADD. ‘Energy-aware Interference-sensitive Geographic Routing in Wireless Sensor Networks’ by Haojun Huang, Guangmin Hu, and Fucai Yu presents an energy-aware interference-sensitive geographic Routing protocol which aims at minimising the total network energy consumption and reducing interference. ‘Data Aggregation Model using EnergyEfficient Delay Scheduling in Multi-Hop Hierarchical Wireless Sensor Networks’ by Meng-Yen Hsieh, Hua-Yi Lin, and Kuan-Ching Li addresses a data aggregation model in hierarchical sensor networks, which provides centralised and distributed clustering mechanisms in an energy-efficient manner. We would like to thank all the authors for their outstanding contributions. Additionally, we would like to give special thanks to Professor Han-Chieh Chao (Editor-in-Chief) and Mr. Paul Rowley for their kindly encouragement and support during the preparation of this Special Section. Any assistance from the editorial staff of IET Communications is appreciated. We wish to express our deepest gratitude to all the reviewers who have devoted much of their precious time to review all the submissions. Finally, we hope that you will enjoy reading the selected papers as we did and you will find the issue informative and helpful in keeping yourselves updo-date in the field of Green Technologies for Wireless Communications and Mobile Computing. TZUNG-SHI CHEN National University of Tainan Tainan City Taiwan YUH-SHYAN CHEN National Taipei University New Taipei Taiwan CHIH-YUNG CHANG Tamkang University New Taipei City Taiwan CHO-LI WANG The University of Hong Kong Hong Kong
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Tzung-Shi Chen received the B.S. degree in Computer Science and Information Engineering from Tamkang University, Taiwan, in June 1989 and the Ph.D. degree in Computer Science and Information Engineering from National Central University, Taiwan, in June 1994. He joined the faculty of the Department of Information Management, Chung Jung Christian University, Tainan, Taiwan, as an Associate Professor in June 1996. He was a visiting scholar at the Department of Computer Science, University of Illinois at Urbana-Champaign, USA, from June to September 2001. He was a Full Professor at the Department of Information and Learning Technology, National University of Tainan, Tainan, Taiwan, from August 2004 to January 2008. Since February 2008, he has become a Full Professor at the Department of Computer Science and Information Engineering, National University of Tainan, Tainan, Taiwan. His current research interests include wireless networks, mobile computing, and cloud computing. Yuh-Shyan Chen received the B.S. degree in Computer Science from Tamkang University, Taiwan, R. O. C., in June 1988 and the M.S. and Ph.D. degrees in Computer Science and Information Engineering from the National Central University, Taiwan, R. O. C., in June 1991 and January 1996, respectively. He joined the faculty of Department of Computer Science and Information Engineering at Chung-Hua University, Taiwan, R. O. C., as an associate professor in February 1996. He joined the Department of Statistic, National Taipei University in August 2000, and joined the Department of Computer Science and Information Engineering, National Chung Cheng University in August 2002. Since 2006, he has been a Professor at the Department of Computer Science and Information Engineering, National Taipei University, Taiwan. Prof. Chen was Vice Chair of Task Force on Telecommunications of Intelligent Systems Applications ‘Technical Committee’, IEEE Computational Intelligence Society from 2007. Prof. Chen serves as Director, Graduate Institute of Communication Engineering (8/20087/2009, 10/2011Present), National Taipei University, ROC. Prof. Chen now also serves as Editor-inChief of International Journal of Ad Hoc and Ubiquitous Computing (SCIE), Regional Editor (Asia and Pacific) of IET Commuications (SCIE), and Editorial Board of Telecommunication System Journal (SCIE), EURASIP Journal on Wireless Communications and Networking (SCIE), International Journal of Communication Systems (SCIE), Mobile Information Systems (SCIE), Journal of Internet Technology (SCIE), and IET Networks. His paper wins the 2001 IEEE 15th ICOIN-15 Best Paper Award. Prof. Chen was a recipient of the 2005 Young Scholar Research Award, National Chung Cheng University, ROC. His recent research topics include wireless communications and mobile computing, and next-generation personal communication system. Dr. Chen is a senior member of the IEEE Communication Society and Phi Tau Phi Society.
IET Commun., 2011, Vol. 5, Iss. 18, pp. 2595–2597 doi: 10.1049/iet-com.2011.0852
www.ietdl.org Chih-Yung Chang received the Ph.D. degree in Computer Science and Information Engineering from National Central University, Taiwan, in 1995. He is currently a Full Professor with the Department of CSIE at Tamkang University, Taiwan. Dr. Chang served as an Associate Guest Editor of many SCI indexed Journals, including International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC 2011 & 2012), International Journal of Distributed Sensor Networks (2012), IET Communications (2011), Telecommunication Systems (TS, 2010), Journal of Information Science and Engineering (JISE, 2008), and Journal of Internet Technology (JIT, 2004 & 2008). He was an Area Chair of IEEE AINA’2005, TANET’2000, TANET’2010, Vice Chair of IEEE WisCom’2005, EUC’2005 and IEEE ITRE’2005, IEEE AINA 2008, Program Co-Chair of IEEE MNSA’2005, UbiLearn’2006, WASN’2007, ACM SAMnet’2008, IEEE AHUC’2008, iCube’2010, iCube’2011, Workshop Co-Chair of MSEAT’2003, MSEAT’2004, IEEE INA’2005, ICS’2008, NCS’2009, IEEE VCNA’2009 and Publication Chair of MSEAT’2005 and SCORM’2006. Dr. Chang is a member of the IEEE Computer Society and Communication Society. His current research interests
IET Commun., 2011, Vol. 5, Iss. 18, pp. 2595–2597 doi: 10.1049/iet-com.2011.0852
include Internet of Things, Wireless Sensor Networks, Ad Hoc Wireless Networks, and WiMAX broadband technologies. Cho-Li Wang received his B.S. degree in Computer Science and Information Engineering from National Taiwan University in 1985. He obtained his M.S. and Ph.D. degrees in Computer Engineering from University of Southern California in 1990 and 1995 respectively. He is currently affiliated with the Department of Computer Science at The University of Hong Kong. Dr. Wang’s research interests include multicore/many core computing, software systems for Cluster and Grid computing, and virtualisation techniques for Cloud computing. He has published more than 130 papers in various peer reviewed journals and conference proceedings. He has served on the editorial boards of several international journals, including, IEEE TC, JISE, JPCC, MGS, ICST TNC, ICST SIS, IJIEI, and FTRA HCIS. He was the program chair of Cluster’03, CCGrid’09, InfoScale’09, and ICPADS’09, ISPA’11, FCST’11, FutureTech’12, and the General Chair for IPDPS’12.
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