Widad Ismail, Christopher Labrador, and Mario Hoffmann
FROM THE GUEST EDITORS
Future Research in Mobile and Wireless Communications
T
he Wireless World Research Forum (WWRF; www.wirelessworld-research.org) was established in 2001 to bring together industry and academic researchers to create a clear, comprehensive, and harmonized view of future research in mobile and wireless communications. WWRF is a global organization with more than 100 members from five continents, representing all sectors of mobile communications industry and the research community, with the mission to shape the wireless future. The forum provides strategic future research directions in the wireless field to generate, identify, and promote research areas and technical trends for mobile and wireless system technologies. Members discuss how new insights will impact innovative application areas such as intelligent ambient environments, health care, and automotive. Besides several publications at regular journals, invited talks, sessions, and panel at major conferences, the WWRF has established the following two major publication channels. Besides the Wiley WWRF Book Series, with four books being published and additional ones to come, this special issue is a part of WWRF publications in IEEE Vehicular Technology Magazine WWRF journal series. This special issue contains a selection of papers from the 24th WWRF Digital Object Identifier 10.1109/MVT.2010.937844
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meeting that was hosted by Universiti Sains Malaysia as a three-day meeting under the theme “Wireless Sans Frontiers: Reaching out to Humanity.” Out of more than 50 papers presented at WWRF24 in Penang Island, Malaysia, 12–14 April 2010, this issue includes six best papers, starting with a paper on WWRF’s Vision 2010 by Klaus David, Sudhir Dixit, and Nigel Jefferies. The article, “2020 Vision,” covers topics such as user requirements, scenarios, spectrum issues, new air interfaces, innovative architectures, and questions of privacy, security, and trust. Increasingly, diverse architectures are being employed to provide integrated and intelligent wireless solutions. Not only are networks, the elements they connect, and the used resources dynamic in both a logical and physical sense, they are becoming more independent and self-aware. This edition of IEEE Vehicular Technology Magazine highlights contributions in the areas of radio-over-fiber (RoF), cognitive networks and cooperation strategies, service quality and user experience, and integrated policy management to satisfy unmet needs, resolve problems, and address new opportunities. In “Radio-over-Fiber Architectures” by Guillory, Meyer, Siaud, Ulmer-Moll, Charbonnier, Pizzinat, and Algani, radio-over-fiber architectures that can expand radio coverage in a homearea network are presented. An RoF link-budget model, with coverage results for different scenarios, is
discussed. RoF issues and associated solutions employing the radio PHY and MAC layers are highlighted along with recommendations for optimization that afford promising advantages of RoF using a monitoring signal based on the radio MAC layer. “Cumulative Interference” by Pirmoradian and Politis presents the findings of their proposed interference measurement techniques. The authors focus on modeling, analyzing, and comparing the cumulative interference at the primary receiver from multiple cognitive users in and out of the licensed spectrum-coverage area. Their straightforward approach yields results that are the starting point for new investigations. The article “Integration of Cooperative Sensing and Transmission” by Rashid, Aripin, Fisal, Syed Ariffin, and Syed Yusof investigates cooperative communication strategies that covers two main strategies: cooperative sensing and cooperative transmission. This concentrates on comparable performance of OR and AND fusion schemes and achievable data rate performances that are evaluated for cooperative transmission using two case scenarios. The analysis concludes that by collaborating cooperative users can enhance decision making. The advantages and limitations of the two scenarios are shown by numerical results based on information theory approach. Therefore, the performance evaluation and feasibility studies of
IEEE VEHICULAR TECHNOLOGY MAGAZINE | SEPTEMBER 2010
the cooperative sensing suggest the possibilities of improving spatial diversity and exploitation on the spectrum usage in the area of cognitive radio (CR) communication. The article “Cognitive Mesh Networks” by Al-Dulaimi, Al-Raweshidy, Cosmas, and Loo presents cognitive mesh networks (CMNs) used to reduce the near field crunch. A proposed CR-over-fiber (CRoF) architecture is developed using RoF to connect to CR. Opnet simulations are used to model three case scenarios as proof of concept that proves the superiority of the proposed CRoF system over traditional CR management. Thus, the throughput can be increased with saving in time delay for small broadcasting. The method used can be guidance for future development in CMN. Decisions on service-quality criteria are some of the important topics not only in providing applications but also in system design and network planning. To provide practical criteria, efforts are underway to enhance service-quality evaluations from the QoS to QoE based. “Mobile Services” by Niida, Uemura, and Nakamura reports the experimental results of service quality evaluations from the perspective of waiting time. In upcoming ambient lifestyle, services provided by heterogeneous and often mobile platforms are combined to build intelligent environments. As these services are hosted within different administrative domains, equally respecting security policies of all services becomes a challenge and conflicts between the policies of different domains can occur. Schu ¨ tte and Wahl propose in their article “Interdomain Policy Conflicts” an approach to resolve conflicts between policies of different administrative domains at runtime by means of metapolicies. In conclusion, we would like to express warm appreciation to all the contributors who submitted their articles to this special issue, reviewers, working group chairs, and vice chairs of the WWRF who helped us in the reviewing process. We hope this
THE WWRF WAS ESTABLISHED IN 2001 TO BRING TOGETHER INDUSTRY AND ACADEMIC RESEARCHERS TO CREATE A CLEAR, COMPREHENSIVE, AND HARMONIZED VIEW OF FUTURE RESEARCH IN MOBILE AND WIRELESS COMMUNICATIONS. special issue provides opportunities for readers to explore the knowledge presented on the latest technology related to wireless. In addition, it is hope that it can also be a reference for future research and developments and collaborations among researchers, industrial players, academicians, and students. This is a platform that share field experiences as well as discuss new development and concepts, problems, and solutions. Last, we would like to thank all the organization and individuals, especially the editor-in-chief and publishing staff of the magazine for their contributions.
Author Information Widad Ismail graduated from the University of Huddersfield, United Kingdom, in 1999 and earned first class honors in electronics and communications engineering. She received her Ph.D. degree in electronics engineering from the University of Birmingham, United Kingdom, in 2004. She is currently a senior lecturer at the School of Electrical and Electronics Engineering, USM, in Nibong Tebal, Penang, Malaysia. She has contributed extensively in research and in the areas of radio-frequency identification, active integrated antennas, RF systems, and wireless systems design. She has initiated AutoID Laboratory, Malaysia, in 2008 as a research and commercialize oriented center where the main objective is to become a hub for research and commercialization activities. These research works have produced eight filed patents, four international awards, three commercial products, and more than 50 publications, including international journal papers, conference/seminars, and other publications. She is also a Member of IEEE and WWRF. Christopher Labrador is vice president of Advanced Research at
SEPTEMBER 2010 | IEEE VEHICULAR TECHNOLOGY MAGAZINE
RIM. He has more than 25 years of technology and general management experience across voice and data, wired and wireless, as well as with telecom operators, SMB, and large enterprises. He has led activities in the areas of research, systems engineering, architecture, software development, and product management. He has published papers and articles in the areas of HMI, voice over Internet protocol (VoIP), mobile sensor networking, and has inventions in the areas of collaboration and convergence, security and authentication, distributed service and call processing, content delivery, and CASE. His research interests include health and mobile sensor networking, coding, encryption, pattern recognition and data mining, and augmented reality HMI. Mario Hoffmann (
[email protected]) received his diploma in computer science from Darmstadt University of Technology, Darmstadt, Germany, in 1998. He completed his master’s thesis at Nanyang Technological University, Singapore. In 1999, he joined the Fraunhofer Institute for Secure Information Technology (SIT) in Darmstadt, Germany. From May 2004 to December 2008, he was the head of the “Secure Mobile Systems” research department. In January 2009, he moved to SIT’s new premises in Munich where he is now responsible for the “Secure Services and Quality Testing” research department. His research activities are dedicated to security in service-oriented architectures and user-centric identity management in ambient environments. In the EU-FP6 project HYDRA (2006–2010), he has been responsible for the security work package. He is a member of the Association for Computing Machinery, GI, and CCC as well as the chair of Working Group 7 “Security&Trust” of the WWRF.
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