Special issue on next generation wireless technologies

Special Issue on Next Generation Wireless Technologies

Xuemin (Sherman) Shen

Phone Lin

Yi-Bing Lin

Y. Thomas Hou

Published online: 2 December 2006

#Springer Science + Business Media, LLC 2006

The next generation wireless networks are expected to

converge into a ubiquitous architecture, which includes

high-speed cellular networks, wireless local area networks

(WLANs), mobile ad hoc networks, peer-to-peer networks,

wireless metropolitan area networks (WMANs), etc. The

increasing demand of wireless multimedia services has

motivated the development of broad wireless access in the

heterogeneous wireless networks. Mobile subscribers can

enjoy the high bit rate, low cost, ubiquitous coverage, and

secure connection. For the next generation wireless

net-works, further extensive investigation, experimentation and

development are necessary, such as capacity analysis/

enhancement, quality-of-service (QoS) support, power

saving, wireless routing, security, and mobility

manage-ment. This special issue presents recent cutting edge

research and state-of-the-art technology. The accepted eight

papers are selected from the 2nd International Conference

on Broadband Networks (BroadNets’05, held in Boston,

MA, Oct. 3

–7, 2005), the 2nd International Conference on

Quality of Service for Heterogeneous Wired/Wireless

Net-works (QShine’05, held in Orlando, FL, Aug. 22–24,

2005), and the 11th Mobile Computing Workshop (held in

Taiwan, Mar. 31, 2005). These papers are timely and

valuable for future analysis, implementation and

experi-ments of heterogeneous broadband wireless networks.

In the first paper

“Dynamic power saving mechanism for

3G UMTS system,” Yang investigates a power saving

mechanism for Universal Mobile Telecommunications

System (UMTS). Analytic and simulation models are

proposed to study the two control parameters:

discontinu-ous reception (DRX) cycle and the inactivity timer

threshold. Optimal values of the two parameters in terms of

maximum power saving are obtained. A dynamic algorithm

is also proposed to enhance the performance of DRX.

In the second paper

“Predictive dynamic channel

allocation scheme for improving power saving and mobility

in BWA networks,” Chen and Tan propose a signal-aware

dynamic channel allocation (SDCA) to improve the channel

utilization as well as to reduce the probability of

out-of-service for IEEE 802.16 networks. The SDCA not only

increases the capacity of the system but saves the overall

power consumption of the system well. A location

prediction scheme is presented to prevent the out-of-service

effect on mobile subscriber stations due to user mobility.

In the third paper

“Queue analysis and multiplexing of

heavy-tailed traffic in wireless packet data networks,”

Teymori and Zhuang investigate the queuing behavior of

self-similar traffic flows for data applications in a

packet-switching single-server wireless network. Close-form

expressions are derived for the relation among the traffic

parameters, the channel working state probability, the

server capacity, and the queue distribution for an infinite

DOI 10.1007/s11036-006-0001-1

X. Shen (*)

Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada e-mail: [email protected]

P. Lin

Graduate Institute of Networking and Multimedia,

Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan, China

e-mail: [email protected] Y.-B. Lin

Science and Information Engineering (CSIE), National Chiao Tung University (NCTU), Hsinchu, Taiwan, China

e-mail: [email protected] Y. T. Hou

Virginia Tech, the Bradley Department of Electrical and Computer Engineering, Blacksburg, VA, USA e-mail: [email protected]

buffer size or the packet loss probability for a finite buffer

size. Queueing behavior is also studied for a multiple-input

system with a finite buffer size.

The fourth and fifth papers focus on cross-layer design

approaches for wireless ad hoc networks. In the fourth paper

“A cross-layer approach to channel assignment in wireless ad

hoc networks,” Gong, Midkiff, and Mao propose a distributed

channel assignment scheme to improve the capacity of

wireless ad hoc networks. Through a joint design of channel

assignment and routing protocols, the proposed scheme has

the advantages of low communication, computation, and

storage complexity. A multi-channel medium access control

protocol is also presented, which is shown to substantially

increase throughput and reduce delay. In the fifth paper

“Joint

design of routing and medium access control for hybrid

mobile ad hoc networks,” Du and Wu present a new routing

protocol, Hybrid Routing, which takes advantage of the

powerful nodes in hybrid mobile ad hoc networks. The

routing area is divided into multiple cells, and one powerful

node is maintained in each cell if possible. Based on location

information and cell structure, routing among the powerful

nodes is efficient and simple. A hybrid medium access

protocol is also proposed, which can improve the efficiency

of medium access in hybrid mobile ad hoc networks.

In the sixth paper

“A differentiated service model for

enhanced distributed channel access (EDCA) of IEEE

802.11e WLANs,” Lee, Liao, and Chen propose a service

mechanism called Differentiated Service-Enhanced

Distrib-uted Channel Access (DS-EDCA) for IEEE 802.11e

WLANs. Delay and delay variation of the high priority

traffic can be controlled, and at the same time, proportional

bandwidth sharing among the best-effort traffic can be

achieved. A hierarchical link sharing model is also presented.

The last two papers deal with network security. In the

seventh paper

“Privacy-enhanced, attack-resilient access

control in pervasive computing environments with optional

context authentication capability,” Ren and Lou propose a

privacy enhanced anonymous authentication and access

control scheme to secure the interactions between mobile

users and services in pervasive computing environments

with optional context authentication capability. The

pro-posed scheme provides explicit mutual authentication

between a mobile user and a service, and it also allows

the mobile user to anonymously interact with the service. It

is denial-of-service (DoS) resilient by requiring the user to

prove its legitimacy when initializing a service session. In

the last paper

“On the impact of quality of protection in

wireless local area networks with IP mobility,” Agarwal

and Wang present a detailed experimental study to

demonstrate the impacts of quality of protection on

performance by integrating cross-layer security protocols

in a wireless LAN testbed with IP mobility. It is

demonstrated that the effects of security policies on QoS

parameters span a wide range. Suggestions are also given

for the design of future security protocols for real-time

services in wireless LANs.

In closing, the guest editors would like to acknowledge the

contribution of many experts who participated in the review

process and provided helpful suggestions to the authors on

improving the content and presentation of the articles. The

advice and support from Dr. Imrich Chlamtac,

Editor-in-Chief, and Ms. Karen Decker are greatly appreciated.

Xuemin (Sherman) Shen received a B.Sc. (1982) degree from Dalian Maritime Univer-sity, China, and M.Sc. (1987) and Ph.D. (1990) degrees from Rutgers University, New Jersey, all in electrical engineering. Currently, Dr. Shen is with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, where he is a professor and the Associate Chair for Graduate Studies. His research focuses on mobility and resource management in interconnected wireless/wireline 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. He was Technical Chair for the IEEE GLOBECOM’07, ISPAN’04, QShine’05, IEEE Broadnets’05, and WirelessCom’05, and is Special Track Chair of the 2005 IFIP Networking Conference. He serves as Associate Editor for IEEE Transactions on Wireless Communications; IEEE Transactions on Vehicular Technology; Computer Networks; ACM/Wireless Networks; Wireless Communications and Mobile Computing (Wiley); and International Journal Computer and Appli-cations. He has also served as Guest Editor for IEEE JSAC, IEEE Wireless Communications, and IEEE Communications Magazine. Dr. Shen received the Outstanding Performance Award from the Univer-sity of Waterloo in 2002 and 2004, for outstanding contribution in teaching, scholarship and service, and the Premier’s Research Excellence Award (PREA) in 2003 from the Province of Ontario, Canada, for demonstrated excellence of scientific and academic contributions.

Phone Lin received his BSCSIE degree and Ph.D. degree from National Chiao-Tung University, Taiwan, Republic of China in 1996 and 2001, respectively. From August 2001 to July 2004, he was an Assistant Professor in Department of Computer Sci-ence and Information Engineering (CSIE), National Taiwan University (NTU), Repub-lic of China. Since August 2004, he has been an Associate Professor in Department of CSIE and Graduate Institute of Networking and Multimedia, NTU, Republic of China. Since August 2005, he has been the chief of Division of Information Management, Computer and Information Networking Center, National Taiwan University. His current research interests include personal communications services, wireless Internet,

and performance modeling. Dr. Lin has published more than 20 international SCI journal papers (most of which are IEEE Trans-actions and ACM papers).

Dr. Lin is a Guest Editor for IEEE Wireless Communications special issue on Mobility and Resource Management, and a Guest Editor for ACM/Springer Mobile Networks and Applications Journal special issue on Broadnets. He is also an Associate Editor of IEEE Transactions on Vehicular Technologies and an Associate Editorial Member for the WCMC Journal. He is the winner of the 2005 Wu Ta You Memorial Award from National Science Council Taiwan, the winner of the 2004 Fu Ssu-Nien Award from National Taiwan University, the winner of 2004 K. T. Li young researcher award from ACM Taipei/Taiwan Chapter, and the winner of 2004 research award for young researchers from Pan Wen-Yuan Foundation. P. Lin is an IEEE senior member. P. Lin’s website address ishttp://www. csie.ntu.edu.tw/~plin.

Yi-Bing Lin is Chair professor of Depart-ment of Computer Science and Information Engineering (CSIE), National Chiao Tung University (NCTU). He also serves as Vice President of the Office of Research and Development, NCTU. 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 editor of IEEE Wireless Communications Magazine, an editor of ACM/Baltzer Wireless Networks, 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, Program-mable, 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 1997, 1999 and 2001 Distinguished Research Awards from National Science Council, Republic of China, 2004 K.-T. Li Outstanding Award, 2005 Pan WY Distinguished Research Award, 2005 Teco Award, and 1998 Outstanding Youth Electrical Engineer Award from CIEE, Republic of China. He also received the NCTU Outstanding Teaching Award in 2002. Lin is an Adjunct Research Fellow of Academia Sinica, and is an Adjunct Chair Professor of Providence University. Lin is an IEEE Fellow, an ACM Fellow, an AAAS Fellow, and IEE Fellow.

Y. Thomas Hou obtained his B.E. degree from the City College of New York in 1991, the M.S. degree from Columbia University in 1993, and the Ph.D. degree from Polytechnic University, Brooklyn, New York, in 1998, all in Electrical Engineering. From 1997 to 2002, He was a researcher at Fujitsu Labora-tories of America, IP Networking Research Department, Sunnyvale, California. Since Fall 2002, he has been an Assistant Professor at Virginia Tech, the Bradley Department of Electrical and Computer Engineering, Blacksburg, Virginia. His current research interests include resource (spectrum) management and networking issues for SDR-enabled wireless networks, optimization and algorithm design for wireless ad hoc and sensor networks, and video communications over dynamic ad hoc networks. In recent past, he also had worked on scalable architectures, protocols, and implementations for differentiat-ed services Internet, service overlay networking, video streaming, and network bandwidth allocation policies and distributed flow control algorithms. He has published over 100 journals and conference papers in the above areas and is a recipient of the 2004 IEEE Communica-tions Society Multimedia CommunicaCommunica-tions Best Paper Award, the 2002 IEEE International Conference on Network Protocols (ICNP) Best Paper Award, and the 2001 IEEE Transactions on Circuits and Systems for Video Technology (CSVT) Best Paper Award. He is a member of ACM and a senior member of IEEE.