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1.
Wireless mesh networks (WMNs) are gaining growing interest as a promising technology for ubiquitous high-speed network access.
While much effort has been made to address issues at physical, data link, and network layers, little attention has been paid
to the security aspect central to the realistic deployment of WMNs. We propose UPASS, the first known secure authentication and billing architecture for large-scale WMNs. UPASS features a novel user-broker-operator
trust model built upon the conventional certificate-based cryptography and the emerging ID-based cryptography. Based on the
trust model, each user is furnished with a universal pass whereby to realize seamless roaming across WMN domains and get ubiquitous network access. In UPASS, the incontestable billing
of mobile users is fulfilled through a lightweight realtime micropayment protocol built on the combination of digital signature
and one-way hash-chain techniques. Compared to conventional solutions relying on a home-foreign-domain concept, UPASS eliminates
the need for establishing bilateral roaming agreements and having realtime interactions between potentially numerous WMN operators.
Our UPASS is shown to be secure and lightweight, and thus can be a practical and effective solution for future large-scale
WMNs.
Yanchao Zhang received the B.E. degree in Computer Communications from Nanjing University of Posts and Telecommunications, Nanjing, China,
in July 1999, and the M.E. degree in Computer Applications from Beijing University of Posts and Telecommunications, Beijing,
China, in April 2002. Since September 2002, he has been working towards the Ph.D. degree in the Department of Electrical and
Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are network and distributed
system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks, wireless sensor networks,
wireless mesh networks, and heterogeneous wired/wireless networks.
Yuguang Fang received the BS and MS degrees in Mathematics from Qufu Normal University, Qufu, Shandong, China, in 1984 and 1987, respectively,
a Ph.D degree in Systems and Control Engineering from Department of Systems, Control and Industrial Engineering at Case Western
Reserve University, Cleveland, Ohio, in January 1994, and a Ph.D degree in Electrical Engineering from Department of Electrical
and Computer Engineering at Boston University, Massachusetts, in May 1997.
From 1987 to 1988, he held research and teaching position in both Department of Mathematics and the Institute of Automation
at Qufu Normal University. From September 1989 to December 1993, he was a teaching/research assistant in Department of Systems,
Control and Industrial Engineering at Case Western Reserve University, where he held a research associate position from January
1994 to May 1994. He held a post-doctoral position in Department of Electrical and Computer Engineering at Boston University
from June 1994 to August 1995. From September 1995 to May 1997, he was a research assistant in Department of Electrical and
Computer Engineering at Boston University. From June 1997 to July 1998, he was a Visiting Assistant Professor in Department
of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was an Assistant Professor
in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology, Newark, New Jersey. In May
2000, he joined the Department of Electrical and Computer Engineering at University of Florida, Gainesville, Florida, where
he got early promotion to Associate Professor with tenure in August 2003, and to Full Professor in August 2005. His research
interests span many areas including wireless networks, mobile computing, mobile communications, wireless security, automatic
control, and neural networks. He has published over one hundred and fifty (150) papers in refereed professional journals and
conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research
Young Investigator Award in 2002. He also received the 2001 CAST Academic Award. He is listed in Marquis Who’s Who in Science
and Engineering, Who’s Who in America and Who’s Who in World.
Dr. Fang has actively engaged in many professional activities. He is a senior member of the IEEE and a member of the ACM.
He is an Editor for IEEE Transactions on Communications, an Editor for IEEE Transactions on Wireless Communications, an Editor
for IEEE Transactions on Mobile Computing, an Editor for ACM Wireless Networks, and an Editor for IEEE Wireless Communications.
He was an Editor for IEEE Journal on Selected Areas in Communications: Wireless Communications Series, an Area Editor for
ACM Mobile Computing and Communications Review, an Editor for Wiley International Journal on Wireless Communications and Mobile
Computing, and Feature Editor for Scanning the Literature in IEEE Personal Communications. He has also actively involved with
many professional conferences such as ACM MobiCom’02 (Committee Co-Chair for Student Travel Award), MobiCom’01, IEEE INFOCOM’06,
INFOCOM’05 (Vice-Chair for Technical Program Committee), INFOCOM’04, INFOCOM’03, INFOCOM’00, INFOCOM’98, IEEE WCNC’04, WCNC’02,
WCNC’00 (Technical Program Vice-Chair), WCNC’99, IEEE Globecom’04 (Symposium Co-Chair), Globecom’02, and International Conference
on Computer Communications and Networking (IC3N) (Technical Program Vice-Chair). 相似文献
2.
Integration of different kinds of wireless networks to provide people seamless and continuous network access services is a
major issue in the B3G network. In this paper, we propose and implement a novel Heterogeneous network Integration Support
Node design (HISN) and a distributed HISN network architecture for the integration of heterogeneous networks, under which
the Session Mobility, Personal Mobility, and Terminal Mobility for mobile users can be maintained through the Session Management
mechanism. Thus, the HISN node can serve as an agent for the user to access Internet services independent of underlying communication
infrastructure. Our design is transparent to the bearer networks and the deployment of the HISN network does not need to involve
the operators of the heterogeneous wireless networks.
This paper is an extension of the work that won the championship of the Mobile Hero contest sponsored by Industrial Development
Bureau of Ministry of Economic Affairs, Taiwan, R.O.C., and was awarded USD 30,000. The work of Lin, Chang and Cheng was supported
in part by the National Science Council (NSC), R.O.C, under the contract number NSC94-2213-E-002-083 and NSC94-2213-E-002-090,
and NSC 94-2627-E-002-001, Ministry of Economic Affairs (MOEA), R.O.C., under contract number 93-EC-17-A-05-S1-0017, the Computer
and Communications Researches Labs/Industrial Technology Research Institute (CCL/ITRL), Chunghwa Telecom Labs, Telcordia Applied
Research Center, Taiwan Network Information Center (TWNIC), and Microsoft Corporation, Taiwan. The work of Fang was supported
in part by the US National Science Foundation Faculty Early Career Development Award under grant ANI-0093241 and US National
Science Foundation under grant DBI-0529012.
Phone Lin (M’02-SM’06) received his BSCSIE degree and Ph.D. degree from National Chiao Tung University, Taiwan, R.O.C. in 1996 and
2001, respectively. From August 2001 to July 2004, he was an Assistant Professor in Department of Computer Science and Information
Engineering (CSIE), National Taiwan University, R.O.C. Since August 2004, he has been an Associate Professor in Department
of CSIE and Graduate Institute of Networking and Multimedia, National Taiwan University, R.O.C. His current research interests
include personal communications services, wireless Internet, and performance modeling. Dr. Lin is an Associate Editor for
IEEE Transactions on Vehicular Technology, a Guest Editor for IEEE Wireless Communications special issue on Mobility and Resource
Management, and a Guest Editor for ACM/Springer MONET special issue on Wireless Broad Access. He is also an Associate Editorial
Member for the WCMC Journal. P. Lin’s email and website addresses are plin@csie.ntu.edu.tw and http://www.csie.ntu.edu.tw/∼plin,
respectively.
Huan-Ming Chang received the BSCSIE degree and Master CSIE degree from National Taiwan University, R.O.C. in 2003 and 2005, respectively.
His current research interest includes wireless Internet. H.-M. Chang’s email address is r91114@csie.ntu.edu.tw.
Yuguang Fang received a Ph.D. degree in Systems and Control Engineering from Case Western Reserve University in January 1994, and a Ph.D.
degree in Electrical Engineering from Boston University in May 1997. From June 1997 to July 1998, he was a Visiting Assistant
Professor in Department of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was
an Assistant Professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology. In
May 2000, he joined the Department of Electrical and Computer Engineering at University of Florida where he got the early
promotion to Associate Professor with tenure in August 2003 and to Full Professor in August 2005. He has published over 180
papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career
Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is currently serving as an Editor for
many journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions
on Mobile Computing, and ACM Wireless Networks. He is also actively participating in conference organization such as the Program
Vice-Chair for IEEE INFOCOM’2005, Program Co-Chair for the Global Internet and Next Generation Networks Symposium in IEEE
Globecom’2004 and the Program Vice Chair for 2000 IEEE Wireless Communications and Networking Conference (WCNC’2000).
Shin-Ming Cheng received the BSCSIE degree in 2000 from National Taiwan University, Taiwan, R.O.C., where he is currently working toward
the Ph.D. degree in the Department of Computer Science and Information Engineering, National Taiwan University. His current
research interests include mobile computing, personal communications services, and wireless Internet. S.-M. Cheng’s email
and website addresses are shimi@pcs.csie.ntu.edu.tw and http://www.pcs.csie.ntu.edu.tw/∼shimi, respectively. 相似文献
3.
In order to support the diverse Quality of Service (QoS) requirements for differentiated data applications in broadband wireless
networks, advanced techniques such as space-time coding (STC) and orthogonal frequency division multiplexing (OFDM) are implemented
at the physical layer. However, the employment of such techniques evidently affects the subchannel-allocation algorithms at
the medium access control (MAC) layer. In this paper, we propose the QoS-driven cross-layer subchannel-allocation algorithms
for data transmissions over asynchronous uplink space-time OFDM-CDMA wireless networks. We mainly focus on QoS requirements
of maximizing the best-effort throughput and proportional bandwidth fairness, while minimizing the upper-bound of scheduling
delay. Our extensive simulations show that the proposed infrastructure and algorithms can achieve high bandwidth fairness
and system throughput while reducing scheduling delay over wireless networks.
Xi Zhang (S’89-SM’98) received the B.S. and M.S. degrees from Xidian University, Xi’an, China, the M.S. degree from Lehigh University,
Bethlehem, PA, all in electrical engineering and computer science, and the Ph.D. degree in electrical engineering and computer
science (Electrical Engineering—Systems) from The University of Michigan, Ann Arbor, USA.
He is currently an Assistant Professor and the Founding Director of the Networking and Information Systems Laboratory, Department
of Electrical and Computer Engineering, Texas A&M University, College Station, Texas, USA. He was an Assistant Professor and
the Founding Director of the Division of Computer Systems Engineering, Department of Electrical Engineering and Computer Science,
Beijing Information Technology Engineering Institute, Beijing, China, from 1984 to 1989. He was a Research Fellow with the
School of Electrical Engineering, University of Technology, Sydney, Australia, and the Department of Electrical and Computer
Engineering, James Cook University, Queensland, Australia, under a Fellowship from the Chinese National Commission of Education.
He worked as a Summer Intern with the Networks and Distributed Systems Research Department, Bell Laboratories, Murray Hills,
NJ, and with AT&T Laboratories Research, Florham Park, NJ, in 1997. He has published more than 80 technical papers. His current
research interests focus on the areas of wireless networks and communications, mobile computing, cross-layer designs and optimizations
for QoS guarantees over mobile wireless networks, wireless sensor and Ad Hoc networks, wireless and wireline network security,
network protocols design and modeling for QoS guarantees over multicast (and unicast) wireless (and wireline) networks, statistical
communications theory, random signal processing, and distributed computer-control systems.
Dr. Zhang received the U.S. National Science Foundation CAREER Award in 2004 for his research in the areas of mobile wireless
and multicast networking and systems. He is currently serving as an Editor for the IEEE Transactions on Wireless Communications,
an Associated Editor for the IEEE Transactions on Vehicular Technology, and and Associated Editor for the IEEE Communications
Letters, and is also currently serving as a Guest Editor for the IEEE Wireless Communications Magazine for the Special Issues
of “Next Generation of CDMA vs. OFDMA for 4G Wireless Applications”. He has served or is serving as the Panelist on the U.S.
National Science Foundation Research-Proposal Review Panel in 2004, the WiFi-Hotspots/WLAN and QoS Panelist at the IEEE QShine
2004, as the Symposium Chair for the IEEE International Cross-Layer Designs and Protocols Symposium within the IEEE International
Wireless Communications and Mobile Computing Conference (IWCMC) 2006, the Technical Program Committee Co-Chair for the IEEE
IWCMC 2006, the Poster Chair for the IEEE QShine 2006, the Publicity Co-Chair for the IEEE WirelessCom 2005, and as the Technical
Program Committee members for IEEE GLOBECOM, IEEE ICC, IEEE WCNC, IEEE VTC, IEEE QShine, IEEE WoWMoM, IEEE WirelessCom, and
IEEE EIT. He is a Senior Member of the IEEE and a member of the Association for Computing Machinery (ACM).
Jia Tang (S’03) received the B.S. degree in electrical engineering from Xi’an Jiaotong University, Xi’an, China, in 2001. He is currently
a Research Assistant working towards the Ph.D. degree in the Networking and Information Systems Laboratory, Department of
Electrical and Computer Engineering, Texas A&M University, College Station, Texas, USA. His research interests include mobile
wireless communications and networks, with emphasis on cross-layer design and optimizations, wireless quality-of-service (QoS)
provisioning for mobile multimedia networks, wireless diversity techniques, and wireless resource allocation.
Mr. Tang received the Fouraker Graduate Research Fellowship Award from the Department of Electrical and Computer Engineering,
Texas A&M University in 2005. 相似文献
4.
In this paper, we develop an analytical model to evaluate the delay performance of the burst-frame-based CSMA/CA protocol
under unsaturated conditions, which has not been fully addressed in the literature. Our delay analysis is unique in that we
consider the end-to-end packet delay, which is the duration from the epoch that a packet enters the queue at the MAC layer
of the transmitter side to the epoch that the packet is successfully received at the receiver side. The analytical results
give excellent agreement with the simulation results, which represents the accuracy of our analytical model. The results also
provide important guideline on how to set the parameters of the burst assembly policy. Based on these results, we further
develop an efficient adaptive burst assembly policy so as to optimize the throughput and delay performance of the burst-frame-based
CSMA/CA protocol.
Kejie Lu received the B.E. and M.E. degrees in Telecommunications Engineering from Beijing University of Posts and Telecommunications,
Beijing, China, in 1994 and 1997, respectively. He received the Ph.D. degree in Electrical Engineering from the University
of Texas at Dallas in 2003. In 2004 and 2005, he was a postdoctoral research associate in the Department of Electrical and
Computer Engineering, University of Florida. Currently, he is an assistant professor in the Department of Electrical and Computer
Engineering, University of Puerto Rico at Mayagüez. His research interests include architecture and protocols design for computer
and communication networks, performance analysis, network security, and wireless communications.
Jianfeng Wang received the B.E. and M.E. degrees in electrical engineering from Huazhong University of Science and Technology, China, in
1999 and 2002, respectively, and the Ph.D. degree in electrical engineering from University of Florida in 2006. From January
2006 to July 2006, he was a research intern in wireless standards and technology group, Intel Corporation. In October 2006,
he joined Philips Research North America as a senior member research staff in wireless communications and networking department.
He is engaged in research and standardization on wireless networks with emphasis on medium access control (MAC).
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001, and the Best Paper Award in International Conference on Quality of Service in Heterogeneous Wired/Wireless
Networks (QShine) 2006.
Currently, he serves as the Editor-in-Chief of Journal of Advances in Multimedia, and an Associate Editor for IEEE Transactions
on Wireless Communications, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Transactions on Vehicular
Technology, and International Journal of Ad Hoc and Ubiquitous Computing. He is also a guest-editor for IEEE Journal on Selected
Areas in Communications (JSAC), Special Issue on Cross-layer Optimized Wireless Multimedia Communications. He served as Program
Chair for IEEE/ACM First International Workshop on Broadband Wireless Services and Applications (BroadWISE 2004); and as a
technical program committee member of over 30 conferences. He is Vice Chair of Mobile and wireless multimedia Interest Group
(MobIG), Technical Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Best Paper Award
Committee, Technical Committee on Multimedia Communications, IEEE Communications Society.
Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D. degree in
Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and
Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor and got an early promotion to an associate
professor with tenure in August 2003 and to a full professor in August 2005. He has published over 200 papers in refereed
professional journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and
the Office of Naval Research Young Investigator Award in 2002. He has served on several editorial boards of technical journals
including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing
and ACM Wireless Networks. He have also been actively participating in professional conference organizations such as serving
as The Steering Committee Co-Chair for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium
Co-Chair for IEEE Globecom’2004, and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2007). He
is a senior member of the IEEE. 相似文献
5.
We propose an innovative resource management scheme for TDMA based mobile ad hoc networks. Since communications between some
important nodes in the network are more critical, they should be accepted by the network with high priority in terms of network
resource usage and quality of service (QoS) support. In this scheme, we design a location-aware bandwidth pre-reservation
mechanism, which takes advantage of each mobile node’s geographic location information to pre-reserve bandwidth for such high
priority connections and thus greatly reduces potential scheduling conflicts for transmissions. In addition, an end-to-end
bandwidth calculation and reservation algorithm is proposed to make use of the pre-reserved bandwidth. In this way, time slot
collisions among different connections and in adjacent wireless links along a connection can be reduced so that more high
priority connections can be accepted into the network without seriously hurting admissions of other connections. The salient
feature of our scheme is the collaboration between the routing and MAC layer that results in the more efficient spatial reuse
of limited resources, which demonstrates how cross-layer design leads to better performance in QoS support. Extensive simulations
show that our scheme can successfully provide better communication quality to important nodes at a relatively low price. Finally,
several design issues and future work are discussed.
Xiang Chen received the B.E. and M.E. degrees in electrical engineering from Shanghai Jiao Tong University, Shanghai, China, in 1997
and 2000, respectively. Afterwards, he worked as a MTS (member of technical staff) in Bell Laboratories, Beijing, China. He
is currently working toward the Ph.D. degree in the department of Electrical and Computer Engineering at the University of
Florida. His research is focused on protocol design and performance evaluation in wireless networks, including cellular networks,
wireless LANs, and mobile ad hoc networks. He is a member of Tau Beta Pi and a student member of IEEE.
Wei Liu received the BE and ME degrees in electrical engineering from Huazhong University of Science and Technology, Wuhan, China,
in 1998 and 2001, respectively. He is currently pursuing the P.hD. degree in the Department of Electrical and Computer Engineering,
University of Florida, Gainesville, where he is a research assistant in the Wireless Networks Laboratory (WINET). His research
interest includes QoS, secure and power efficient routing, and MAC protocols in mobile ad hoc networks and sensor networks.
He is a student member of the IEEE.
Hongqiang Zhai received the B.E. and M.E. degrees in electrical engineering from Tsinghua University, Beijing, China, in July 1999 and January
2002 respectively. He worked as a research intern in Bell Labs Research China from June 2001 to December 2001, and in Microsoft
Research Asia from January 2002 to July 2002. Currently he is pursuing the Ph.D. degree in the Department of Electrical and
Computer Engineering, University of Florida. He is a student member of IEEE.
Yuguang Fang received a Ph.D. degree in Systems and Control Engineering from Case Western Reserve University in January 1994, and a Ph.D.
degree in Electrical Engineering from Boston University in May 1997. From June 1997 to July 1998, he was a Visiting Assistant
Professor in Department of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was
an Assistant Professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology. In
May 2000, he joined the Department of Electrical and Computer Engineering at University of Florida where he got the early
promotion to Associate Professor with tenure in August 2003 and to Full Professor in August 2005. He has published over 180
papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career
Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is currently serving as an Editor for
many journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEETransactions
on Mobile Computing, and ACM Wireless Networks. He is also actively participating in conference organization such as the Program
Vice-Chair for IEEE INFOCOM’2005, Program Co-Chair for the Global Internet and Next Generation Networks Symposium in IEEE
Globecom’2004 and the Program Vice Chair for 2000 IEEE Wireless Communications and Networking Conference (WCNC’2000). 相似文献
6.
Quality of service (QoS) support for multimedia services in the IEEE 802.11 wireless LAN is an important issue for such WLANs
to become a viable wireless access to the Internet. In this paper, we endeavor to propose a practical scheme to achieve this
goal without changing the channel access mechanism. To this end, a novel call admission and rate control (CARC) scheme is
proposed. The key idea of this scheme is to regulate the arriving traffic of the WLAN such that the network can work at an
optimal point. We first show that the channel busyness ratio is a good indicator of the network status in the sense that it
is easy to obtain and can accurately and timely represent channel utilization. Then we propose two algorithms based on the
channel busyness ratio. The call admission control algorithm is used to regulate the admission of real-time or streaming traffic
and the rate control algorithm to control the transmission rate of best effort traffic. As a result, the real-time or streaming
traffic is supported with statistical QoS guarantees and the best effort traffic can fully utilize the residual channel capacity
left by the real-time and streaming traffic. In addition, the rate control algorithm itself provides a solution that could
be used above the media access mechanism to approach the maximal theoretical channel utilization. A comprehensive simulation
study in ns-2 has verified the performance of our proposed CARC scheme, showing that the original 802.11 DCF protocol can
statically support strict QoS requirements, such as those required by voice over IP or streaming video, and at the same time,
achieve a high channel utilization.
Hongqiang Zhai received the B.E. and M.E. degrees in electrical engineering from Tsinghua University, Beijing, China, in July 1999 and January
2002 respectively. He worked as a research intern in Bell Labs Research China from June 2001 to December 2001, and in Microsoft
Research Asia from January 2002 to July 2002. Currently he is pursuing the PhD degree in the Department of Electrical and
Computer Engineering, University of Florida. He is a student member of IEEE.
Xiang Chen received the B.E. and M.E. degrees in electrical engineering from Shanghai Jiao Tong University, Shanghai, China, in 1997
and 2000, respectively, and the Ph.D. degree in electrical and computer engineering from the University of Florida, Gainesville,
in 2005. He is currently a Senior Research Engineer at Motorola Labs, Arlington Heights, IL. His research interests include
resource management, medium access control, and quality of service (QoS) in wireless networks. He is a Member of Tau Beta
Pi and a student member of IEEE.
Yuguang Fang received a Ph.D degree in Systems and Control Engineering from Case Western Reserve University in January 1994, and a Ph.D
degree in Electrical Engineering from Boston University in May 1997.
From June 1997 to July 1998, he was a Visiting Assistant Professor in Department of Electrical Engineering at the University
of Texas at Dallas. From July 1998 to May 2000, he was an Assistant Professor in the Department of Electrical and Computer
Engineering at New Jersey Institute of Technology. In May 2000, he joined the Department of Electrical and Computer Engineering
at University of Florida where he got the early promotion with tenure in August 2003 and has been an Associate Professor since
then. He has published over one hundred (100) papers in refereed professional journals and conferences. He received the National
Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research Young Investigator Award in 2002.
He is currently serving as an Editor for many journals including IEEE Transactions on Communications, IEEE Transactions on
Wireless Communications, IEEE Transactions on Mobile Computing, and ACM Wireless Networks. He is also actively participating
in conference organization such as the Program Vice-Chair for IEEE INFOCOM’2005, Program Co-Chair for the Global Internet
and Next Generation Networks Symposium in IEEE Globecom’2004 and the Program Vice Chair for 2000 IEEE Wireless Communications
and Networking Conference (WCNC’2000). 相似文献
7.
In wireless data networks such as the WAP systems, the cached data may be time-sensitive and strong consistency must be maintained (i.e., the data presented to the user at the WAP handset must be the same as that in the origin server). In this paper, we study the cached data access algorithms in such systems. Two caching algorithms are investigated. In Algorithm I, Pull-Each-Read, whenever a data access occurs, the client always asks the server whether the cached entry in the client is valid or not. In Algorithm II, Callback, the server always invalidates the cached entry in the client whenever an update occurs. Analytic models are proposed to evaluate the performance of these algorithms. Our studies show that Algorithm II outperforms Algorithm I if the data access rate is high and the access pattern is irregular. We also design an adaptive mechanism to effectively switch between the two algorithms to take advantages of both algorithms. We also apply the single-level cached data access algorithms for the multi-level cache hierarchy. Our study indicates that with appropriate arrangement, strongly consistent cached data access for wireless Internet (such as WAP) can be efficiently supported.Yuguang Fang received the B.S. and M.S. degrees in Mathematics from Qufu Normal University, Qufu, Shandong, China, in 1984 and 1987, respectively, a Ph.D degree from Department of Systems, Control and Industrial Engineering at Case Western Reserve University, Cleveland, Ohio, in January 1994, and a Ph.D degree from Department of Electrical and Computer Engineering at Boston University, Massachusetts, in May 1997.From 1987 to 1988, he held research and teaching positions in both Department of Mathematics and the Institute of Automation at Qufu Normal University. He held a post-doctoral position in Department of Electrical and Computer Engineering at Boston University from June 1994 to August 1995. From June 1997 to July 1998, he was a Visiting Assistant Professor in Department of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was an Assistant Professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology, Newark, New Jersey. From May 2000 to July 2003, he was an Assistant Professor in the Department of Electrical and Computer Engineering at University of Florida, Gainesville, Florida, where he has been an Associate Professor since August 2003. His research interests span many areas including wireless networks, mobile computing, mobile communications, automatic control, and neural networks. He has published over ninety papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career Development Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is listed in Marquis Whos Who in Science and Engineering, Whos Who in America and Whos Who in World.Dr. Fang has actively engaged in many professional activities. He is a senior member of the IEEE and a member of the ACM. He is an Editor for IEEE Transactions on Communications, an Editor for IEEE Transactions on Wireless Communications, an Editor for ACM Wireless Networks, an Area Editor for ACM Mobile Computing and Communications Review, an Associate Editor for Wiley International Journal on Wireless Communications and Mobile Computing, and an Editor for IEEE Wireless Communications. He was an Editor for IEEE Journal on Selected Areas in Communications: Wireless Communications Series and the feature editor for Scanning the Literature in IEEE Wireless Communications (formerly IEEE Personal Communications). He has also actively involved with many professional conferences such as ACM MobiCom02, ACM MobiCom01, IEEE INFOCOM04, INFOCOM03, INFOCOM00, INFOCOM98, IEEE WCNC02, WCNC00 (Technical Program Vice-Chair), WCNC99, and International Conference on Computer Communications and Networking (IC3N98) (Technical Program Vice-Chair).Yi-Bing Lin received his BSEE degree from National Cheng Kung University in 1983, and his Ph.D. degree in Computer Science from the University of Washington in 1990. From 1990 to 1995, he was with the Applied Research Area at Bell Communications Research (Bellcore), Morristown, NJ. In 1995, he was appointed as a professor of Department of Computer Science and Information Engineering (CSIE), National Chiao Tung University (NCTU). In 1996, he was appointed as Deputy Director of Microelectronics and Information Systems Research Center, NCTU. During 1997-1999, he was elected as Chairman of CSIE, NCTU. His current research interests include design and analysis of personal communications services network, mobile computing, distributed simulation, and performance modeling. Dr. Lin has published over 150 journal articles and more than 200 conference papers.Dr. Lin is a senior technical editor of IEEE Network, an editor of IEEE Trans. on Wireless Communications, an associate editor of IEEE Trans. on Vehicular Technology, an associate editor of IEEE Communications Survey and Tutorials, an editor of IEEE Personal Communications Magazine, an editor of Computer Networks, an area editor of ACM Mobile Computing and Communication Review, a columnist of ACM Simulation Digest, an editor of International Journal of Communications Systems, an editor of ACM/Baltzer Wireless Networks, an editor of Computer Simulation Modeling and Analysis, an editor of Journal of Information Science and Engineering, Program Chair for the 8th Workshop on Distributed and Parallel Simulation, General Chair for the 9th Workshop on Distributed and Parallel Simulation. Program Chair for the 2nd International Mobile Computing Conference, Guest Editor for the ACM/Baltzer MONET special issue on Personal Communications, a Guest Editor for IEEE Transactions on Computers special issue on Mobile Computing, a Guest Editor for IEEE Transactions on Computers special issue on Wireless Internet, and a Guest Editor for IEEE Communications Magazine special issue on Active, Programmable, and Mobile Code Networking. Lin is the author of the book Wireless and Mobile Network Architecture (co-author with Imrich Chlamtac; published by John Wiley & Sons). Lin received 1998, 2000 and 2002 Outstanding Research Awards from National Science Council, ROC, and 1998 Outstanding Youth Electrical Engineer Award from CIEE, ROC. He also received the NCTU Outstanding Teaching Award in 2002. Lin is an Adjunct Research Fellow of Academia Sinica, and is Chair Professor of Providence University. Lin serves as consultant of many telecommunications companies including FarEasTone and Chung Hwa Telecom. Lin is an IEEE Fellow. 相似文献
8.
Yu Cheng Xinhua Ling Lin X. Cai Wei Song Weihua Zhuang Xuemin Shen Alberto Leon-Garcia 《Wireless Networks》2009,15(1):73-86
This paper presents an analytical model for evaluating the statistical multiplexing effect, admission region, and contention
window design in multiclass wireless local area networks (WLANs). We consider distributed medium access control (MAC) which
provisions service differentiation by assigning different contention windows to different classes. Mobile nodes belonging
to different classes may have heterogeneous traffic arrival processes with different quality of service (QoS) requirements.
With bursty input traffic, e.g. on/off sources, our analysis shows that the WLAN admission region under the QoS constraint
can be significantly improved, when the statistical multiplexing effect is taken into account. We also analyze the MAC resource
sharing between the short-range dependent (SRD) on/off sources and the long-range dependent (LRD) fractional Brownian motion
(FBM) traffic, where the impact of the Hurst parameter on the admission region is investigated. Moveover, we demonstrate that
the proper selection of contention windows plays an important role in improving the WLAN’s QoS capability, while the optimal
contention window for each class and the maximum admission region can be jointly solved in our analytical model. The analysis
accuracy and the resource utilization improvement from statistical multiplexing gain and contention window optimization are
demonstrated by extensive numerical results.
Yu Cheng received the B.E. and M.E. degrees in Electrical Engineering from Tsinghua University, Beijing, China, in 1995 and 1998,
respectively, and the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario,
Canada, in 2003. From September 2004 to July 2006, he was a postdoctoral research fellow in the Department of Electrical and
Computer Engineering, University of Toronto, Ontario, Canada. Since August 2006, he has been with the Department of Electrical
and Computer Engineering, Illinois Institute of Technology, Chicago, Illinois, USA, as an Assistant Professor. His research
interests include service and application oriented networking, autonomic network management, Internet performance analysis,
resource allocation, wireless networks, and wireless/wireline interworking. He received a Postdoctoral Fellowship Award from
the Natural Sciences and Engineering Research Council of Canada (NSERC) in 2004.
Xinhua Ling received the B. Eng. degree in Radio Engineering from Southeast University, Nanjing, China in 1993 and the M. Eng. degree
in Electrical Engineering from the National University of Singapore, Singapore in 2001. He is currently pursuing the Ph.D.
degree in the Department of Electrical and Computer Engineering at the University of Waterloo, Ontario, Canada. From 1993
to 1998, he was an R&D Engineer in Beijing Institute of Radio Measurement, China. From February 2001 to September 2002, he
was with the Centre for Wireless Communications (currently Institute for Infocom Research), Singapore, as a Senior R&D Engineer,
developing the protocol stack for UE in the UMTS system. His general research interests are in the areas of cellular, WLAN,
WPAN, mesh and ad hoc networks and their internetworking, focusing on protocol design and performance analysis.
Lin X. Cai received the B.Sc. degree in computer science from Nanjing University of Science and Technology, Nanjing, China, in 1996
and the MASc. degree in electrical and computer engineering from the University of Waterloo, Waterloo, Canada, in 2005. She
is currently working toward the Ph.D. degree in the same field at the University of Waterloo. Her current research interests
include network performance analysis and protocol design for multimedia applications over wireless networks.
Wei Song received the B.S. degree in electrical engineering from Hebei University, China, in 1998 and the M.S. degree in computer
science from Beijing University of Posts and Telecommunications, China, in 2001. She is currently working toward the Ph.D.
degree at the Department of Electrical and Computer Engineering, University of Waterloo, Canada. Her current research interests
include resource allocation and quality-of-service (QoS) provisioning for the integrated cellular networks and wireless local
area networks (WLANs).
Weihua Zhuang received the Ph.D. degree in electrical engineering from the University of New Brunswick, Canada. Since October 1993, she
has been with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, where she is a Professor.
Dr. Zhuang is a co-author of the textbook Wireless Communications and Networking (Prentice Hall, 2003). Her current research interests include multimedia wireless communications, wireless networks, and
radio positioning. She received the Outstanding Performance Award in 2005 and 2006 from the University of Waterloo and the
Premier’s Research Excellence Award in 2001 from the Ontario Government for demonstrated excellence of scientific and academic
contributions. She is the Editor-in-Chief of IEEE Transactions on Vehicular Technology and an Editor of IEEE Transactions on Wireless Communications.
Xuemin (Sherman) Shen received the B.Sc.(1982) degree from Dalian Maritime University (China) and the M.Sc. (1987) and Ph.D. degrees (1990) from
Rutgers University, New Jersey (USA), all in electrical engineering. He is a Professor and the Associate Chair for Graduate
Studies, Department of Electrical and Computer Engineering, University of Waterloo, Canada. His research focuses on mobility
and resource management in interconnected wireless/wired networks, UWB wireless communications systems, wireless security,
and ad hoc and sensor networks. He is a co-author of three books, and has published more than 300 papers and book chapters
in wireless communications and networks, control and filtering. Dr. Shen serves as the Technical Program Committee Chair for
IEEE Globecom’07, General Co-Chair for Chinacom’07 and QShine’06, the Founding Chair for IEEE Communications Society Technical
Committee on P2P Communications and Networking. He also serves as a Founding Area Editor for IEEE Transactions on Wireless Communications; Associate Editor for IEEE Transactions on Vehicular Technology; KICS/IEEE Journal of Communications and Networks; Computer Networks (Elsevier); ACM/Wireless Networks; and Wireless Communications and Mobile Computing (John Wiley), etc. He has also served as Guest Editor for IEEE JSAC, IEEE Wireless Communications, and IEEE Communications Magazine. Dr. Shen received the Excellent Graduate Supervision Award in 2006, and the Outstanding Performance Award in 2004 from the
University of Waterloo, the Premier’s Research Excellence Award in 2003 from the Province of Ontario, Canada, and the Distinguished
Performance Award in 2002 from the Faculty of Engineering, University of Waterloo. Dr. Shen is a registered Professional Engineer
of Ontario, Canada.
Alberto Leon-Garcia received the B.S., M.S., and Ph.D. degrees in electrical engineering from the University of Southern California, in 1973,
1974, and 1976 respectively. He is a Full Professor in the Department of Electrical and Computer Engineering, University of
Toronto, ON, Canada, and he currently holds the Nortel Institute Chair in Network Architecture and Services. In 1999 he became
an IEEE fellow for “For contributions to multiplexing and switching of integrated services traffic”.
Dr. Leon-Garcia was Editor for Voice/Data Networks for the
IEEE Transactions on Communications from 1983 to 1988 and Editor for the IEEE Information Theory Newsletter from 1982 to 1984. He was Guest Editor of the September 1986 Special Issue on Performance Evaluation of Communications Networks
of the IEEE Selected Areas on Communications. He is also author of the textbooks Probability and Random Processes for Electrical Engineering (Reading, MA: Addison-Wesley), and Communication Networks: Fundamental Concepts and Key Architectures (McGraw-Hill), co-authored with Dr. Indra Widjaja. 相似文献
9.
An important objective of next-generation wireless networks is to provide quality of service (QoS) guarantees. This requires
a simple and efficient wireless channel model that can easily translate into connection-level QoS measures such as data rate,
delay and delay-violation probability. To achieve this, in Wu and Negi (IEEE Trans. on Wireless Communications 2(4) (2003)
630–643), we developed a link-layer channel model termed effective capacity, for the setting of a single hop, constant-bit-rate arrivals, fluid traffic, and wireless channels with negligible propagation
delay. In this paper, we apply the effective capacity technique to deriving QoS measures for more general situations, namely,
(1) networks with multiple wireless links, (2) variable-bit-rate sources, (3) packetized traffic, and (4) wireless channels
with non-negligible propagation delay.
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003. From July 1997 to December 1999, he conducted
graduate research at Polytechnic University, Brooklyn, New York. During the summers of 1998, 1999 and 2000, he conducted research
at Fujitsu Laboratories of America, Sunnyvale, California, on architectures and traffic management algorithms in the Internet
and wireless networks for multimedia applications.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001.
Currently, he is an Associate Editor for the IEEE Transactions on Vehicular Technology and Associate Editor for International
Journal of Ad Hoc and Ubiquitous Computing. He served as Program Chair for IEEE/ACM First International Workshop on Broadband
Wireless Services and Applications (BroadWISE 2004); and as TPC member of over 20 conferences such as IEEE INFOCOM'05, IEEE
ICC'05, IEEE WCNC'05, and IEEE Globecom'04. He is Vice Chair of Mobile and wireless multimedia Interest Group (MobIG), Technical
Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Award Committee, Technical Committee
on Multimedia Communications, IEEE Communications Society. He is also Director of Communications, IEEE Gainesville Section.
Rohit Negi received the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology, Bombay, India in 1995. He
received the M.S. and Ph.D. degrees from Stanford University, CA, USA, in 1996 and 2000 respectively, both in Electrical Engineering.
He has received the President of India Gold medal in 1995.
Since 2000, he has been with the Electrical and Computer Engineering department at Carnegie Mellon University, Pittsburgh,
PA, USA, where he is an Assistant Professor. His research interests include signal processing, coding for communications systems,
information theory, networking, cross-layer optimization and sensor networks. 相似文献
10.
Sensor nodes are densely deployed to accomplish various applications because of the inexpensive cost and small size. Depending
on different applications, the traffic in the wireless sensor networks may be mixed with time-sensitive packets and reliability-demanding
packets. Therefore, QoS routing is an important issue in wireless sensor networks. Our goal is to provide soft-QoS to different
packets as path information is not readily available in wireless networks. In this paper, we utilize the multiple paths between
the source and sink pairs for QoS provisioning. Unlike E2E QoS schemes, soft-QoS mapped into links on a path is provided based
on local link state information. By the estimation and approximation of path quality, traditional NP-complete QoS problem
can be transformed to a modest problem. The idea is to formulate the optimization problem as a probabilistic programming,
then based on some approximation technique, we convert it into a deterministic linear programming, which is much easier and
convenient to solve. More importantly, the resulting solution is also one to the original probabilistic programming. Simulation
results demonstrate the effectiveness of our approach.
This work was supported in part by the U.S. National Science Foundation under grant DBI-0529012, the National Science Foundation
Faculty Early Career Development Award under grant ANI-0093241 and the Office of Naval Research under Young Investigator Award
N000140210464.
Xiaoxia Huang received her BS and MS in the Electrical Engineering from Huazhong University of Science and Technology in 2000 and 2002,
respectively. She is completing her Ph.D. degree in the Department of Electrical and Computer Engineering at the University
of Florida. Her research interests include mobile computing, QoS and routing in wireless ad hoc networks and wireless sensor
networks.
Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in
Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and
Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate
professor with tenure in August 2003 and to a full professor in August 2005. He holds a University of Florida Research Foundation
(UFRF) Professorship from 2006 to 2009. He has published over 200 papers in refereed professional journals and conferences.
He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research Young Investigator
Award in 2002. He has served on several editorial boards of technical journals including IEEE Transactions on Communications,
IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM Wireless Networks. He have also
been activitely participating in professional conference organizations such as serving as The Steering Committee Co-Chair
for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium Co-Chair for IEEE Globecom’2004,
and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2007). 相似文献
11.
In this paper we study connection admission control (CAC) in IEEE 802.11-based ESS mesh networks. An analytical model is developed
for studying the effects of CAC on mesh network capacity. A distributed CAC scheme is proposed, which incorporates load balancing
when selecting a mesh path for new connections. Our results show that connection level performance, including both average
number of connections and connection blocking probability, can be greatly improved using the proposed mechanism compared to
other admission control schemes.
Dongmei Zhao received the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario, Canada
in June 2002. Since July 2002 she has been with the Department of Electrical and Computer Engineering, McMaster University,
Hamilton, Ontario, Canada where she is an assistant professor. Dr. Zhao’s research interests include modeling and performance
analysis, quality-of-service provisioning, access control and admission control in wireless networks. Dr. Zhao is a member
of the IEEE.
Jun Zou received his B. Eng. and M. Eng. Degrees from Tianjin University, China in 1999 and 2002, respectively. He worked at Siemens
Communication Networks Ltd., Beijing from 2002 to 2004. Currently, he is a PhD. student at McMaster University, Canada. His
research interests include wireless networking, routing protocols, architecture of next generation networks and network security.
Terence D. Todd received the B.A.Sc., M.A.Sc. and Ph.D. degrees in Electrical Engineering from the University of Waterloo, Waterloo, Ontario,
Canada. While at Waterloo Dr. Todd spent 3 years as a Research Associate with the Computer Communications Networks Group (CCNG).
He is currently a Professor of Electrical and Computer Engineering at McMaster University in Hamilton, Ontario, Canada. At
McMaster he has been the Principal Investigator on a number of projects in the optical networks and wireless networking areas.
Professor Todd spent 1991 on research leave in the Distributed Systems Research Department at AT&T Bell Laboratories in Murray
Hill, NJ. He also spent January-December 1998 on research leave at The Olivetti and Oracle Research Laboratory in Cambridge,
England. While at ORL he worked on the piconet project which was an early embedded wireless network testbed. Dr. Todd’s research
interests include metropolitan/local area networks, wireless communications and the performance analysis of computer communication
networks and systems. Dr. Todd is a past Editor of the IEEE/ACM Transactions on Networking and currently holds the NSERC/RIM/CITO
Chair on Pico-Cellular Wireless Internet Access Networks
Dr. Todd is a Professional Engineer in the province of Ontario and a member of the IEEE. 相似文献
12.
Future wired-wireless multimedia networks require diverse quality-of-service (QoS) support. To this end, it is essential to
rely on QoS metrics pertinent to wireless links. In this paper, we develop a cross-layer model for adaptive wireless links,
which enables derivation of the desired QoS metrics analytically from the typical wireless parameters across the hardware-radio
layer, the physical layer and the data link layer. We illustrate the advantages of our model: generality, simplicity, scalability
and backward compatibility. Finally, we outline its applications to power control, TCP, UDP and bandwidth scheduling in wireless
networks.
The work by Q. Liu and G. B. Giannakis are prepared through collaborative participation in the Communications and Networks
Consortium sponsored by the U.S. Army Research Laboratory under the Collaborative Technology Alliance Program, Cooperative
Agreement DAAD19-01-2-0011. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes
notwithstanding any copyright notation thereon. The work by S. Zhou is supported by UConn Research Foundation internal grant
445157.
Qingwen Liu (S’04) received the B.S. degree in electrical engineering and information science in 2001, from the University of Science
and Technology of China (USTC). He received the M.S. degree in electrical engineering in 2003, from the University of Minnesota
(UMN). He currently pursues his Ph.D. degree in the Department of Electrical and Computer Engineering at the University of
Minnesota (UMN).
His research interests lie in the areas of communications, signal processing, and networking, with emphasis on cross-layer
analysis and design, quality of service support for multimedia applications over wired-wireless networks, and resource allocation.
Shengli Zhou (M’03) received the B.S. degree in 1995 and the M.Sc. degree in 1998, from the University of Science and Technology of China
(USTC), both in electrical engineering and information science. He received his Ph.D. degree in electrical engineering from
the University of Minnesota, 2002, and joined the Department of Electrical and Computer Engineering at the University of Connecticut,
2003.
His research interests lie in the areas of communications and signal processing, including channel estimation and equalization,
multi-user and multi-carrier communications, space time coding, adaptive modulation, and cross-layer designs. He serves as
an associate editor for IEEE Transactions on Wireless Communications since Feb. 2005.
G. B. Giannakis (Fellow’97) received his Diploma in Electrical Engineering from the National Technical University of Athens, Greece, 1981.
From September 1982 to July 1986 he was with the University of Southern California (USC), where he received his MSc. in Electrical
Engineering, 1983, MSc. in Mathematics, 1986, and Ph.D. in Electrical Engineering, 1986. After lecturing for one year at USC,
he joined the University of Virginia in 1987, where he became a professor of Electrical Engineering in 1997. Since 1999 he
has been a professor with the Department of Electrical and Computer Engineering at the University of Minnesota, where he now
holds an ADC Chair in Wireless Telecommunications.
His general interests span the areas of communications and signal processing, estimation and detection theory, time-series
analysis, and system identification -- subjects on which he has published more than 200 journal papers, 350 conference papers
and two edited books. Current research focuses on transmitter and receiver diversity techniques for single- and multi-user
fading communication channels, complex-field and space-time coding, multicarrier, ultra-wide band wireless communication systems,
cross-layer designs and sensor networks.
G. B. Giannakis is the (co-) recipient of six paper awards from the IEEE Signal Processing (SP) and Communications Societies
(1992, 1998, 2000, 2001, 2003, 2004). He also received the SP Society’s Technical Achievement Award in 2000. He served as
Editor in Chief for the IEEE SP Letters, as Associate Editor for the IEEE Trans. on Signal Proc. and the IEEE SP Letters, as secretary of the SP Conference Board, as member of the SP Publications Board, as member and vice-chair of the Statistical
Signal and Array Processing Technical Committee, as chair of the SP for Communications Technical Committee and as a member
of the IEEE Fellows Election Committee. He has also served as a member of the IEEE-SP Society’s Board of Governors, the Editorial
Board for the Proceedings of the IEEE and the steering committee of the IEEE Trans. on Wireless Communications. 相似文献
13.
In this paper, we investigate the routing optimization problem in wireless mesh networks. While existing works usually assume
static and known traffic demand, we emphasize that the actual traffic is time-varying and difficult to measure. In light of
this, we alternatively pursue a stochastic optimization framework where the expected network utility is maximized. For multi-path
routing scenario, we propose a stochastic programming approach which requires no priori knowledge on the probabilistic distribution
of the traffic. For the single-path routing counterpart, we develop a learning-based algorithm which provably converges to
the global optimum solution asymptotically.
Yang Song received his B.E. and M.E. degrees in Electrical Engineering from Dalian University of Technology, Dalian, China, and University of Hawaii at Manoa, Honolulu, U.S.A., in July 2004 and August 2006, respectively. Since September 2006, he has been working towards the Ph.D. degree in the Department of Electrical and Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are wireless network, game theory, optimization and mechanism design. He is a student member of IEEE a member of Game Theory Society. Chi Zhang received the B.E. and M.E. degrees in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in July 1999 and January 2002, respectively. Since September 2004, he has been working towards the Ph.D. degree in the Department of Electrical and Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are network and distributed system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks, wireless sensor networks, wireless mesh networks, and heterogeneous wired/wireless networks. Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate professor with tenure in August 2003 and to a full professor in August 2005. He holds a University of Florida Research Foundation (UFRF) Professorship from 2006 to 2009 and a Changjiang Scholar Chair Professorship with National Key Laboratory of Integrated Services Networks, Xidian University, China, from 2008 to 2011. He has published over 200 papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is the recipient of the Best Paper Award in IEEE International Conference on Network Protocols (ICNP) in 2006 and the recipient of the IEEE TCGN Best Paper Award in the IEEE High-Speed Networks Symposium, IEEE Globecom in 2002. Dr. Fang is also active in professional activities. He is a Fellow of IEEE and a member of ACM. He has served on several editorial boards of technical journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM Wireless Networks. He has been actively participating in professional conference organizations such as serving as the Steering Committee Co-Chair for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium Co-Chair for IEEE Globecom’2004, and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2009). 相似文献
Yuguang FangEmail: |
Yang Song received his B.E. and M.E. degrees in Electrical Engineering from Dalian University of Technology, Dalian, China, and University of Hawaii at Manoa, Honolulu, U.S.A., in July 2004 and August 2006, respectively. Since September 2006, he has been working towards the Ph.D. degree in the Department of Electrical and Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are wireless network, game theory, optimization and mechanism design. He is a student member of IEEE a member of Game Theory Society. Chi Zhang received the B.E. and M.E. degrees in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in July 1999 and January 2002, respectively. Since September 2004, he has been working towards the Ph.D. degree in the Department of Electrical and Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are network and distributed system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks, wireless sensor networks, wireless mesh networks, and heterogeneous wired/wireless networks. Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate professor with tenure in August 2003 and to a full professor in August 2005. He holds a University of Florida Research Foundation (UFRF) Professorship from 2006 to 2009 and a Changjiang Scholar Chair Professorship with National Key Laboratory of Integrated Services Networks, Xidian University, China, from 2008 to 2011. He has published over 200 papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is the recipient of the Best Paper Award in IEEE International Conference on Network Protocols (ICNP) in 2006 and the recipient of the IEEE TCGN Best Paper Award in the IEEE High-Speed Networks Symposium, IEEE Globecom in 2002. Dr. Fang is also active in professional activities. He is a Fellow of IEEE and a member of ACM. He has served on several editorial boards of technical journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM Wireless Networks. He has been actively participating in professional conference organizations such as serving as the Steering Committee Co-Chair for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium Co-Chair for IEEE Globecom’2004, and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2009). 相似文献
14.
IEEE 802.11 Wireless LAN (WLAN) has become a prevailing solution for broadband wireless Internet access while the Transport
Control Protocol (TCP) is the dominant transport-layer protocol in the Internet. Therefore, it is critical to have a good
understanding of the TCP dynamics over WLANs. In this paper, we conduct rigorous and comprehensive modeling and analysis of
the TCP performance over the emerging 802.11e WLANs, or more specifically, the 802.11e Enhanced Distributed Channel Access
(EDCA) WLANs. We investigate the effects of minimum contention window sizes and transmission opportunity (TXOP) limits (of
both the AP and stations) on the aggregate TCP throughput via analytical and simulation studies. We show that the best aggregate
TCP throughput performance can be achieved via AP’s contention-free access for downlink packet transmissions and the TXOP
mechanism. We also study the effects of some simplifying assumptions used in our analytical model, and simulation results
show that our model is reasonably accurate, particularly, when the wireline delay is small and/or the packet loss rate is
low.
Jeonggyun Yu received his B.E. degree in School of Electronic Engineering from Korea University, Seoul, Korea in 2002. He is currently working toward his Ph.D. in the School of Electrical Engineering at Seoul National University (SNU), Seoul, Korea. His research interests include QoS support, algorithm development, performance evaluation for wireless networks, in particular, IEEE 802.11 wireless local-area networks (WLANs). He is a student member of IEEE. Sunghyun Choi is currently an associate professor at the School of Electrical Engineering, Seoul National University (SNU), Seoul, Korea. Before joining SNU in September 2002, he was with Philips Research USA, Briarcliff Manor, New York, USA as a Senior Member Research Staff and a project leader for three years. He received his B.S. (summa cum laude) and M.S. degrees in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1992 and 1994, respectively, and received Ph.D. at the Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor in September, 1999. His current research interests are in the area of wireless/ mobile networks with emphasis on wireless LAN/MAN/PAN, next-generation mobile networks, mesh networks, cognitive radios, resource management, data link layer protocols, and cross-layer approaches. He authored/coauthored over 120 technical papers and book chapters in the areas of wireless/mobile networks and communications. He has co-authored (with B. G. Lee) a book “Broadband Wireless Access and Local Networks: Mobile WiMAX and WiFi,” Artech House, 2008. He holds 15 US patents, nine European patents, and seven Korea patents, and has tens of patents pending. He has served as a General Co-Chair of COMSWARE 2008, and a Technical Program Committee Co-Chair of ACM Multimedia 2007, IEEE WoWMoM 2007 and IEEE/Create-Net COMSWARE 2007. He was a Co-Chair of Cross-Layer Designs and Protocols Symposium in IWCMC 2006, 2007, and 2008, the workshop co-chair of WILLOPAN 2006, the General Chair of ACM WMASH 2005, and a Technical Program Co-Chair for ACM WMASH 2004. He has also served on program and organization committees of numerous leading wireless and networking conferences including IEEE INFOCOM, IEEE SECON, IEEE MASS, and IEEE WoWMoM. He is also serving on the editorial boards of IEEE Transactions on Mobile Computing, ACM SIGMOBILE Mobile Computing and Communications Review (MC2R), and Journal of Communications and Networks (JCN). He is serving and has served as a guest editor for IEEE Journal on Selected Areas in Communications (JSAC), IEEE Wireless Communications, Pervasive and Mobile Computing (PMC), ACM Wireless Networks (WINET), Wireless Personal Communications (WPC), and Wireless Communications and Mobile Computing (WCMC). He gave a tutorial on IEEE 802.11 in ACM MobiCom 2004 and IEEE ICC 2005. Since year 2000, he has been a voting member of IEEE 802.11 WLAN Working Group. He has received a number of awards including the Young Scientist Award (awarded by the President of Korea) in 2008; IEEK/IEEE Joint Award for Young IT Engineer of the Year 2007 in 2007; the Outstanding Research Award in 2008 and the Best Teaching Award in 2006 both from the College of Engineering, Seoul National University; the Best Paper Award from IEEE WoWMoM 2008; and Recognition of Service Award in 2005 and 2007 from ACM. Dr. Choi was a recipient of the Korea Foundation for Advanced Studies (KFAS) Scholarship and the Korean Government Overseas Scholarship during 1997–1999 and 1994–1997, respectively. He is a senior member of IEEE, and a member of ACM, KICS, IEEK, KIISE. Daji Qiao is currently an assistant professor in the Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa. He received his Ph.D. degree in Electrical Engineering-Systems from The University of Michigan, Ann Arbor, Michigan, in February 2004. His current research interests include modeling, analysis and protocol/algorithm design for various types of wireless/mobile networks, including IEEE 802.11 Wireless LANs, mesh networks, and sensor networks. He is a member of IEEE and ACM. 相似文献
Daji QiaoEmail: |
Jeonggyun Yu received his B.E. degree in School of Electronic Engineering from Korea University, Seoul, Korea in 2002. He is currently working toward his Ph.D. in the School of Electrical Engineering at Seoul National University (SNU), Seoul, Korea. His research interests include QoS support, algorithm development, performance evaluation for wireless networks, in particular, IEEE 802.11 wireless local-area networks (WLANs). He is a student member of IEEE. Sunghyun Choi is currently an associate professor at the School of Electrical Engineering, Seoul National University (SNU), Seoul, Korea. Before joining SNU in September 2002, he was with Philips Research USA, Briarcliff Manor, New York, USA as a Senior Member Research Staff and a project leader for three years. He received his B.S. (summa cum laude) and M.S. degrees in electrical engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1992 and 1994, respectively, and received Ph.D. at the Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor in September, 1999. His current research interests are in the area of wireless/ mobile networks with emphasis on wireless LAN/MAN/PAN, next-generation mobile networks, mesh networks, cognitive radios, resource management, data link layer protocols, and cross-layer approaches. He authored/coauthored over 120 technical papers and book chapters in the areas of wireless/mobile networks and communications. He has co-authored (with B. G. Lee) a book “Broadband Wireless Access and Local Networks: Mobile WiMAX and WiFi,” Artech House, 2008. He holds 15 US patents, nine European patents, and seven Korea patents, and has tens of patents pending. He has served as a General Co-Chair of COMSWARE 2008, and a Technical Program Committee Co-Chair of ACM Multimedia 2007, IEEE WoWMoM 2007 and IEEE/Create-Net COMSWARE 2007. He was a Co-Chair of Cross-Layer Designs and Protocols Symposium in IWCMC 2006, 2007, and 2008, the workshop co-chair of WILLOPAN 2006, the General Chair of ACM WMASH 2005, and a Technical Program Co-Chair for ACM WMASH 2004. He has also served on program and organization committees of numerous leading wireless and networking conferences including IEEE INFOCOM, IEEE SECON, IEEE MASS, and IEEE WoWMoM. He is also serving on the editorial boards of IEEE Transactions on Mobile Computing, ACM SIGMOBILE Mobile Computing and Communications Review (MC2R), and Journal of Communications and Networks (JCN). He is serving and has served as a guest editor for IEEE Journal on Selected Areas in Communications (JSAC), IEEE Wireless Communications, Pervasive and Mobile Computing (PMC), ACM Wireless Networks (WINET), Wireless Personal Communications (WPC), and Wireless Communications and Mobile Computing (WCMC). He gave a tutorial on IEEE 802.11 in ACM MobiCom 2004 and IEEE ICC 2005. Since year 2000, he has been a voting member of IEEE 802.11 WLAN Working Group. He has received a number of awards including the Young Scientist Award (awarded by the President of Korea) in 2008; IEEK/IEEE Joint Award for Young IT Engineer of the Year 2007 in 2007; the Outstanding Research Award in 2008 and the Best Teaching Award in 2006 both from the College of Engineering, Seoul National University; the Best Paper Award from IEEE WoWMoM 2008; and Recognition of Service Award in 2005 and 2007 from ACM. Dr. Choi was a recipient of the Korea Foundation for Advanced Studies (KFAS) Scholarship and the Korean Government Overseas Scholarship during 1997–1999 and 1994–1997, respectively. He is a senior member of IEEE, and a member of ACM, KICS, IEEK, KIISE. Daji Qiao is currently an assistant professor in the Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa. He received his Ph.D. degree in Electrical Engineering-Systems from The University of Michigan, Ann Arbor, Michigan, in February 2004. His current research interests include modeling, analysis and protocol/algorithm design for various types of wireless/mobile networks, including IEEE 802.11 Wireless LANs, mesh networks, and sensor networks. He is a member of IEEE and ACM. 相似文献
15.
Cooperative-diversity slotted ALOHA 总被引:1,自引:0,他引:1
We propose a cooperative-diversity technique for ad hoc networks based on the decode-and-forward relaying strategy. We develop
a MAC protocol based on slotted ALOHA that allows neighbors of a transmitter to act as relays and forward a packet toward
its final destination when the transmission to the intended recipient fails. The proposed technique provides additional robustness
against fading, packet collisions and radio mobility. Network simulations confirm that under heavy traffic conditions, in
which every radio always has packets to send, the proposed cooperative-diversity slotted-ALOHA protocol can provide a higher
one-hop and end-to-end throughput than the standard slotted-ALOHA protocol can. A similar advantage in end-to-end delay can
be obtained when the traffic is light. As a result, the proposed cooperative-diversity ALOHA protocol can be used to improve
these measures of Quality of Service (QoS) in ad hoc wireless networks.
John M. Shea (S’92–M’99) received the B.S. (with highest honors) in Computer Engineering from Clemson University in 1993 and the M.S.
and Ph.D. degrees in electrical engineering from Clemson University in 1995 and 1998, respectively.
Dr. Shea is currently an Associate Professor of electrical and computer engineering at the University of Florida. Prior to
that, he was an Assistant Professor at the University of Florida from July 1999 to August 2005 and a post-doctoral research
fellow at Clemson University from January 1999 to August 1999. He was a research assistant in the Wireless Communications
Program at Clemson University from 1993 to 1998. He is currently engaged in research on wireless communications with emphasis
on error-control coding, cross-layer protocol design, cooperative diversity techniques, and hybrid ARQ.
Dr. Shea was selected as a Finalist for the 2004 Eta Kappa Nu Outstanding Young Electrical Engineer Award. He received the
Ellersick Award from the IEEE Communications Society in 1996. Dr. Shea was a National Science Foundation Fellow from 1994
to 1998. He is an Associate Editor for the IEEE Transactions on Vehicular Technology.
Tan F. Wong received the B.Sc. degree (1st class honors) in electronic engineering from the Chinese University of Hong Kong in 1991,
and the M.S.E.E. and Ph.D. degrees in electrical engineering from Purdue University in 1992 and 1997, respectively. He was
a research engineer working on the high speed wireless networks project in the Department of Electronics at Macquarie University,
Sydney, Australia. He also served as a post-doctoral research associate in the School of Electrical and Computer Engineering
at Purdue University. Since August 1998 he has been with the University of Florida, where he is currently an associate professor
of electrical and computer engineering. He serves as Editor for Wideband and Multiple Access Wireless Systems for the IEEE
Transactions on Communications and as the Editor for the IEEE Transactions on Vehicular Technology. 相似文献
16.
This paper describes research towards a system for locating wireless nodes in a home environment requiring merely a single
access point. The only sensor reading used for the location estimation is the received signal strength indication (RSSI) as
given by an RF interface, e.g., Wi-Fi. Wireless signal strength maps for the positioning filter are obtained by a two-step
parametric and measurement driven ray-tracing approach to account for absorption and reflection characteristics of various
obstacles. Location estimates are then computed using Bayesian filtering on sample sets derived by Monte Carlo sampling. We
outline the research leading to the system and provide location performance metrics using trace-driven simulations and real-life
experiments. Our results and real-life walk-troughs indicate that RSSI readings from a single access point in an indoor environment are sufficient to derive good location estimates of users with sub-room precision.
Gergely V. Záruba is an Assistant Professor of Computer Science and Engineering at The University of Texas at Arlington (CSE@UTA). He has received
the Ph.D. degree in Computer Science from The University of Texas at Dallas in 2001, and the M.S. degree in Computer Engineering
from the Technical University of Budapest, Department of Telecommunications and Telematics, in 1997. Dr. Záruba’s research
interests include wireless networks, algorithms, and protocols, performance evaluation, current wireless and assistive technologies.
He has served on many organizing and technical program committees for leading conferences and has guest edited journals. He
is a member of the IEEE and its Communications Society.
Manfred Huber is an Assistant Professor of Computer Science and Engineering at The University of Texas at Arlington (CSE@UTA). He received
his M.S. and Ph.D. degrees in Computer Science from the University of Massachusetts, Amherst in 1993 and 2000, respectively.
He obtained his “Vordiplom” from the University of Karlsruhe, Germany in 1990. Dr. Huber is the co-director of the Robotics
and of the Learning and Planning Laboratory at CSE@UTA. His research interests are in reinforcement learning, autonomous robots,
cognitive systems, and adaptive human-computer interfaces. He is a member of the IEEE, the ACM, and the AAAI.
Farhad A. Kamangar is a Professor of Computer Science and Engineering at The University of Texas at Arlington (CSE@UTA). He has received the
Ph.D. and M.S. degrees in Electrical Engineering from The University of Texas at Arlington in 1980 and 1977 respectively.
He received his B.S. degree from the University of Teheran, Iran in 1975. Dr. Kamangar’s research interests include image
processing, robotics, signal processing, machine intelligence and computer graphics. He is a member of the IEEE and the ACM.
Imrich Chlamtac is the President of CREATE-NET and the Bruno Kessler Professor at the University of Trento, Italy and has held various honorary
and chaired professorships in USA and Europe including the Distinguished Chair in Telecommunications Professorship at the
University of Texas at Dallas, Sackler Professorship at Tel Aviv University and University Professorship at the Technical
University of Budapest. In the past he was with Technion and UMass, Amherst, DEC Research. Dr. Imrich Chlamtac has made significant
contribution to various networking technologies as scientist, educator and entrepreneur. Dr. Chlamtac is the recipient of
multiple awards and recognitions including Fellow of the IEEE, Fellow of the ACM, Fulbright Scholar, the ACM Award for Outstanding
Contributions to Research on Mobility and the IEEE Award for Outstanding Technical Contributions to Wireless Personal Communications.
Dr. Chlamtac published close to four hundred refereed journal, book, and conference articles and is listed among ISI’s Highly
Cited Researchers in Computer Science. Dr. Chlamtac is the co-author of four books, including the first book on Local Area
Networks (1980) and the Amazon.com best seller and IEEE Editor’s Choice Wireless and Mobile Network Architectures, published
by John Wiley and Sons (2000). Dr. Chlamtac has widely contributed to the scientific community as founder and Chair of ACM
Sigmobile, founder and steering committee chair of some of the lead conferences in networking, including ACM Mobicom, IEEE/SPIE/ACM
OptiComm, CreateNet Mobiquitous, CreateNet WiOpt, IEEE/CreateNet Broadnet, IEEE/CreateNet Tridentcom and IEEE/CreateNet Securecomm
conferences. Dr. Chlamtac also serves as the founding Editor in Chief of the ACM/URSI/Springer Wireless Networks (WINET),
the ACM/Springer Journal on Special Topics in Mobile Networks and Applications (MONET). 相似文献
17.
We propose the physical-layer (PHY) air interface solutions for downlink and uplink transmissions in broadband high-speed
wireless cellular systems. A system based on low-density parity-check (LDPC) coded multiple-input-multiple-output (MIMO) orthogonal
frequency-division multiplexing (OFDM) time-division multiple-accessing (TDMA) (with scheduling) is proposed for downlink
transmission; and a system based on orthogonal space-time block coded (STBC) multi-carrier code-division multiple-accessing
(MC-CDMA) is proposed for uplink transmission. The proposed scheme can support ∼100 Mbps peak rate over 25 MHz bandwidth downlink
channels and ∼30 Mbps sum rate of multiple users over 25 MHz uplink channels. Moreover, the proposed solutions provide excellent
performance and reasonable complexity for mobile station and for base station.
Ben Lu received the B.S. and M.S. degrees in electrical engineering from Southeast University, Nanjing, China, in 1994 and 1997;
the Ph.D. degree from Texas A & M University in 2002. From 1994 to 1997, he was a Research Assistant with National Mobile
Communications Research Laboratory at Southeast University, China. From 1997 to 1998, he was with the CDMA Research Department
of Zhongxing Telecommunication Equipment Co., Shanghai, China. From 2002 to 2004, he worked for the project of high-speed
wireless packet data transmission (4G prototype) at NEC Laboratories America, Princeton, New Jersey. He is now with Silicon
Laboratories. His research interests include the signal processing and error-control coding for mobile and wireless communication
systems.
Xiaodong Wang received the B.S. degree in Electrical Engineering and Applied Mathematics (with the highest honor) from Shanghai Jiao Tong
University, Shanghai, China, in 1992; the M.S. degree in Electrical and Computer Engineering from Purdue University in 1995;
and the Ph.D degree in Electrical Engineering from Princeton University in 1998. From July 1998 to December 2001, he was an
Assistant Professor in the Department of Electrical Engineering, Texas A&M University. In January 2002, he joined the faculty
of the Department of Electrical Engineering, Columbia University. Dr. Wang’s research interests fall in the general areas
of computing, signal processing and communications. He has worked in the areas of digital communications, digital signal processing,
parallel and distributed computing, nanoelectronics and bioinformatics, and has published extensively in these areas. Among
his publications is a recent book entitled “Wireless Communication Systems: Advanced Techniques for Signal Reception”, published
by Prentice Hall, Upper Saddle River, in 2003. His current research interests include wireless communications, Monte Carlo-based
statistical signal processing, and genomic signal processing. Dr. Wang received the 1999 NSF CAREER Award, and the 2001 IEEE
Communications Society and Information Theory Society Joint Paper Award. He currently serves as an Associate Editor for the
IEEE Transactions on Communications, the IEEE Transactions on Wireless Communications, the IEEE Transactions on Signal Processing, and the IEEE Transactions on Information Theory.
Mohammad Madihian (S’78-M’83-SM’88-F’98) received his Ph.D in electronic engineering from Shizuoka University, Hamamatsu, Japan, in 1983. He
is presently the Chief Patent Officer and Department Head, NEC Laboratories America, Inc., Princeton, New Jersey, where he
conducts Microwave as well as PHY/MAC layer signal processing activities for high-speed wireless networks and personal communications
applications. He holds 35 Japan/US patents and has authored/co-authored more than 130 technical publications including 25
invited talks. He has received 8 NEC Distinguished R&D Achievement Awards, the 1988 IEEE MTT-S Best Paper Microwave Prize,
and 1998 IEEE Fellow Award. He has served as Guest Editor to the IEEE Journal of Solid-State Circuits, Japan IEICE Transactions
on Electronics, and IEEE Transactions on Microwave Theory and Techniques. He is currently serving on the IEEE Speaker’s Bureau,
IEEE Compound Semiconductor IC Symposium Executive Committee, IEEE Radio and Wireless Symposium Executive Committee, IEEE
International Microwave Symposium Technical Program Committee, IEEE MTT-6 Subcommittee, IEEE MTT Editorial Board, and Technical
Program Committee of International Conference on Solid State Devices and Materials. Dr. Madihian is an Adjunct Professor at
Electrical and Computer Engineering Department, Drexel University, Philadelphia, Pennsylvania. 相似文献
18.
This paper explores analytical Radio Resource Management models where the relationship between users and services is mapped
through utility functions. Compared to other applications of these models to networking, we focus in particular on specific
aspects of multimedia systems with adaptive traffic, and propose a novel framework for describing and investigating dynamic
allocation of resources in wireless networks. In doing so, we also consider economic aspects, such as the financial needs
of the provider and the users’ reaction to prices. As an example of how our analytical tool can be used, in this paper we
compare different classes of RRM strategies, e.g., Best Effort vs. Guaranteed Performance, for which we explore the relationships
between Radio Resource Allocation, pricing, provider’s revenue, network capacity and users’ satisfaction. Finally, we present
a discussion about Economic Admission Control, which can be applied in Best Effort scenarios to further improve the performance.
Part of this work has been presented at the conference ACM/IEEE MSWiM 2004, Venice (Italy).
Leonardo Badia received a Laurea degree (with honors) in electrical engineering and a Ph.D. in information engineering from the University
of Ferrara, Italy, in 2000 and 2004, respectively. He was a Research Fellow at the University of Ferrara from 2001 to 2006.
During these years, he also had collaborations with the University of Padova, Italy, and Wireless@KTH, Royal Institute of
Technology, Stockholm, Sweden. In 2006, he joined the “Institutions Markets Technologies” (IMT) Institute for Advanced Studies,
Lucca, Italy, where he is currently a Research Fellow. His research interests include wireless ad hoc and mesh networks, analysis
of transmission protocols, optimization tools and economic models applied to radio resource management.
Michele Zorzi received a Laurea degree and a Ph.D. in electrical engineering from the University of Padova in 1990 and 1994, respectively.
During academic year 1992–1993, he was on leave at UCSD, attending graduate courses and doing research on multiple access
in mobile radio networks. In 1993 he joined the faculty of the Dipartimento di Elettronica e Informazione, Politecnico di
Milano, Italy. After spending three years with the Center for Wireless Communications at UCSD, in 1998 he joined the School
of Engineering of the University of Ferrara, Italy, where he became a professor in 2000. Since November 2003 he has been on
the faculty at the Information Engineering Department of the University of Padova. His present research interests include
performance evaluation in mobile communications systems, random access in mobile radio networks, ad hoc and sensor networks,
energy constrained communications protocols, and broadband wireless access. He was Editor-In-Chief of IEEE Wireless Communications,
2003–2005, and currently serves on the Editorial Boards of IEEE Transactions on Communications, IEEE Transactions on Wireless
Communications, Wiley’s Journal of Wireless Communications and Mobile Computing, and ACM/URSI/Kluwer Journal of Wireless Networks,
and on the Steering Committee of the IEEE Transactions on Mobile Computing. He has also been a Guest Editor of special issues
in IEEE Personal Communications (Energy Management in Personal Communications Systems) and IEEE Journal on Selected Areas
in Communications (Multimedia Network Radios). 相似文献
19.
This paper studies scheduling algorithms for an infra-structure based wireless local area network with multiple simultaneous
transmission channels. A reservation-based medium access control protocol is assumed where the base station (BS) allocates
transmission slots to the system mobile stations based on their requests. Each station is assumed to have a tunable transmitter
and tunable receiver. For this network architecture, the scheduling algorithms can be classified into two categories: contiguous
and non-contiguous, depending on whether slots are allocated contiguously to the mobile stations. The main objective of the
scheduling algorithms is to achieve high channel utility while having low time complexity. In this paper, we propose three
scheduling algorithms termed contiguous sorted sequential allocation (CSSA), non-contiguous round robin allocation (NCRRA)
and non-contiguous sorted round robin allocation (NCSRRA). Among these, CSSA schedules each station in contiguous mode, while
other two algorithms, NCRRA and NCSRRA, schedule stations in non-contiguous mode. Through extensive analysis and simulation,
the results demonstrate that the CSSA with only slightly increased complexity can achieve much higher channel utility when
compared to the existing contiguous scheduling algorithms. The NCRRA and NCSRRA on the other hand, results in significantly
lower complexity, while still achieving the optimal channel utility compared to existing non-contiguous scheduling algorithms.
Chonggang Wang received a B.Sc. (honors) degree from Northwestern Polytechnic University, Xi'an, China, in 1996, and M.S. and Ph. D. degrees
in communication and information system from University of Electrical Science and Technology in China, Chengdu, China, and
Beijing University of Posts and Telecommunications, Beijing, China, in 1999 and 2002, respectively. From September 2002 to
November 2003 he has been with the Hong Kong University of Science and Technology, Hong Kong, where he is an associate researcher
in the Department of Computer Science. He is now a post-doctoral research fellow in University of Arkansas, Arkansas. His
current research interests are in wireless networks with QoS guarantee, sensor networks, peer-to-peer and overlay networks.
Bo Li received the B.S. (summa cum laude) and M.S. degrees in the Computer Science from Tsinghua University, Beijing, P. R. China,
in 1987 and 1989, respectively, and the Ph.D. degree in the Electrical and Computer Engineering from University of Massachusetts
at Amherst in 1993. Between 1994 and 1996, he worked on high performance routers and ATM switches in IBM Networking System
Division, Research Triangle Park, North Carolina. Since January 1996, he has been with Computer Science Department, the Hong
Kong University of Science and Technology, where he is an associated professor and co-director for the ATM/IP cooperate research
center, a government sponsored research center. Since 1999, he has also held an adjunct researcher position at the Microsoft
Research Asia (MSRA), Beijing, China. His current research interests include wireless mobile networking supporting multimedia,
video multicast and all optical networks using WDM, in which he has published over 150 technical papers in referred journals
and conference proceedings. He has been an editor or a guest editor for 16 journals, and involved in the organization of about
40 conferences. He was the Co-TPC Chair for IEEE Infocom'2004. He is a member of ACM and a senior member of IEEE.
Krishna M. Sivalingam (ACM ‘93) is an Associate Professor in the Dept. of CSEE at University of Maryland, Baltimore County. Previously, he was
with the School of EECS at Washington State University, Pullman from 1997 until 2002; and with the University of North Carolina
Greensboro from 1994 until 1997. He has also conducted research at Lucent Technologies' Bell Labs in Murray Hill, NJ, and
at AT&T Labs in Whippany, NJ. He received his M.S. and Ph.D. degrees in Computer Science from State University of New York
at Buffalo in 1990 and 1994 respectively; and his B.E. degree in Computer Science and Engineering in 1988 from Anna University,
Chennai (Madras), India. While at SUNY Buffalo, he was a Presidential Fellow from 1988 to 1991. His research interests include
wireless networks, optical wavelength division multiplexed networks, and performance evaluation. He holds three patents in
wireless networks and has published several research articles including more than twenty-five journal publications. He has
published an edited book on Wireless Sensor Networks in 2004 and on optical networks in 2000 and in 2004. He is a member of
the Editorial Board for ACM Wireless Networks Journal, IEEE Transactions on Mobile Computing, and KICS Journal of Computer
Networks. He has served as a Guest Co-Editor for special issues of ACM MONET on “Wireless Sensor Networks” in 2003 and 2004
and an issue of IEEE Journal on Selected Areas in Communications on optical WDM networks (2000). He is co-recipient of the
Best Paper Award at the IEEE International Conference on Networks 2000 held in Singapore. His work has been supported by several
sources including AFOSR, NSF, Cisco, Intel and Laboratory for Telecommunication Sciences. He is a member of the Editorial
Board for ACM Wireless Networks Journal, IEEE Transactions on Mobile Computing, and KICS Journal of Computer Networks. He
is serving as Technical Program Co-Chair for the First IEEE Conference on Sensor Communications and Networking to be held
in Santa Clara, CA in 2004. He has served as General Co-Chair for SPIE Opticomm 2003 (Dallas, TX) and for ACM Intl. Workshop
on Wireless Sensor Networks and Applications (WSNA) 2003 held on conjunction with ACM MobiCom 2003 at San Diego, CA. He served
as Technical Program Co-Chair of SPIE/IEEE/ACM OptiComm conference at Boston, MA in July 2002; and as Workshop Co-Chair for
WSNA 2002 held in conjunction with ACM MobiCom 2002 at Atlanta, GA in Sep 2002. He is a Senior Member of IEEE and a member
of ACM.
Kazem Sohraby received the BS, MS and PhD degrees in electrical engineering and the MBA from the Wharton School, University of Pennsylvania,
Philadephia. He is a Professor of the Electrical Engineering Department, College of Engineering, University of Arkansas, Fayetteville.
Prior to that, he was with Bell Laboratories, Holmdel, NJ. His areas of interest include computer networking, signaling, switching,
performance analysis, and traffic theory. He has over 20 applications and granted patents on computer protocols, wireless
and optical systems, circuit and packet switching, and on optical Internet. He has several publications, including a book
on The Performance and Control of Computer Communications Networks (Boston, MA: 1995). Dr Sohraby is a Distinguished Lecturer
of the IEEE Communications Society, and serves as its President's representative on the Committee on Communications and Information
Policy (CCIP). He served on the Education Committee of the IEEE Communications Society, is on the Editorial Boards of several
publications, and served as Reviewer and Panelist with the National Science Foundation, the US Army and the Natural Sciences
and Engineering Research Council of Canada. 相似文献
20.
Mohammed Smadi Terence D. Todd Vytas Kezys Vahid Azhari Dongmei Zhao 《Wireless Networks》2008,14(6):815-829
In this paper we consider vertical handoff for enterprise-based dual-mode (DM) cellular/WLAN handsets. When the handset roams
out of WLAN coverage, the DM's cellular interface is used to maintain the call by anchoring it through an enterprise PSTN
gateway/PBX. Soft handoff can be achieved in this case if the gateway supports basic conference bridging, since a new leg
of the call can be established to the conference bridge while the existing media stream path is active. Unfortunately this
requires that all intra-enterprise calls be routed through the gateway when the call is established. In this paper we consider
a SIP based architecture to perform conferenced dual-mode handoff and propose a much more scalable mechanism for short-delay
environments, whereby active calls are handed off into the conference bridge prior to the initiation of the vertical handoff.
Results are presented which are taken from a dual-mode handset testbed, from analytic models, and from simulations which characterize
the scalability of the proposed mechanism.
Mohammed Smadi received the B.Eng and Mgmt and M.A.Sc degrees in Computer Engineering from McMaster University in Hamilton, Ontario, Canada.
Mohammed received an NSERC doctoral award in 2005 and is currently a Ph.D. student at the Wireless Networking Group at McMaster
University.
Terence D. Todd received the B.A.Sc, M.A.Sc and Ph.D. degrees in Electrical Engineering from the University of Waterloo, Waterloo, Ontario,
Canada. While at Waterloo he spent 3 years as a Research Associate with the Computer Communications Networks Group (CCNG).
He is currently a Professor of Electrical and Computer Engineering at McMaster University in Hamilton, Ontario, Canada.
Professor Todd spent 1991 on research leave in the Distributed Systems Research Department at AT&T Bell Laboratories in Murray
Hill, NJ. He also spent 1998 on research leave at The Olivetti and Oracle Research Laboratory in Cambridge, England. While
at ORL he worked on the piconet project which was an early embedded wireless network testbed.
Dr. Todd’s research interests include metropolitan/local area networks, wireless communications and the performance analysis
of computer communication networks and systems. He is a past Editor of the IEEE/ACM Transactions on Networking and currently
holds the NSERC/RIM/CITO Chair on Pico-Cellular Wireless Internet Access Networks.
Dr. Todd is a Professional Engineer in the province of Ontario and a member of the IEEE.
Vytas Kezys was born in Hamilton, Canada in 1957. He received the B.Eng. degree in Electrical Engineering from McMaster University, Canada,
in 1979.
From 1979 to 1998, Mr. Kezys was involved in radar and communications research as Principal Research Engineer at the Communications
Research Laboratory, McMaster University. While at McMaster, his research activities included array signal processing for
low-angle tracking radar, radar signal processing, and smart antennas for wireless communications. Mr. Kezys was founder and
President of TalariCom Inc., a start-up company that developed cost effective smart antenna technologies for broadband wireless
access applications.
Currently, Mr. Kezys is Director of Advanced Products at Research in Motion in Waterloo, Canada.
Vahid S. Azhari received his B.S. and M.S. from the Department of Electrical and Computer Engineering, IUST and University of Tehran, Iran,
in 2000 and 2003 respectively. His M.S. research focused on designing scheduling algorithms for switch fabrics. He also worked
for two years for the Iranian Telecommunication Research Centre on developing software for SDH switches. He is currently pursuing
his Ph.D. degree at the Wireless Networking Laboratory, McMaster University, Canada. His main area of research includes handoff
management in integrated wireless networks, WLAN deployment techniques, and wireless mesh networks.
Dongmei Zhao received the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario, Canada
in June 2002. Since July 2002 she has been with the Department of Electrical and Computer Engineering, McMaster University,
Hamilton, Ontario, Canada where she is an assistant professor. Dr. Zhao’s research interests include modeling and performance
analysis, quality-of-service provisioning, access control and admission control in wireless cellular networks and integrated
cellular and ad hoc networks. Dr. Zhao is a member of the IEEE. 相似文献