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Publication Abstracts

 

 

 

 

 

 

Journal Paper Abstracts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. Y.-H. Han, H. Jang, B. Park, J. McNair, and J.H. Choi, "A Cross-layering Design for IPv6 Fast Handover Support in the IEEE 802.16e Wireless MAN," to appear in IEEE Network Magazine, 2007.

Broadband wireless access networks, such as the IEEE 802.16 standard for wireless metropolitan area networks, aim to provide high bandwidth, low cost, scalable solutions that extend multimedia services from the backbone networks to wireless users. Because of the larger coverage area, portability and mobility have become significant issues for providing high quality mobile services, as it is crucial to minimize handover latency and maintain IP session continuity. As a result, such issues were addressed by the IEEE 802.16e task group on “Mobile Wireless MAN.” However, the scope of the IEEE802.16e standard did not include cross-layering approaches for the enhancement of upper layer handover performance. This article proposes a new cross-layering design for fast IPv6 handover support over IEEE 802.16e. First, we describe the IEEE 802.16 deployment architectures, as well as the link layer handover procedures in IEEE 802.16e. Next, we describe the operation of fast IPv6 handover, and point out the need for interaction between the network layer and the link layer for proper performance. Then, we propose a new cross-layering design to achieve a proper behavior of the fast IPv6 handover over IEEE 802.16e. Finally, we present handover scenarios for the proposed techniques and discuss the major contributing factors to the handover latency.



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. J. D. Lee, K. Tripathi, H. A. Latchman and J. McNair, "Population-based Adaptive Tuning of Constant Contention Window in Powerline MAC," to appear in the International Journal of Power and Energy Systems, 2007.

Power line based communication systems (PLCs) have gradually spread to local area networks and to broad band power lines in order to gain the advantage of high data rates, no additional wiring, and easy scalability. The Home Plug 1.0 protocol is the most commonly used technology for power line communication. It uses carrier sense multiple access with collision avoidance (CSMA/CA) to provide a maximum medium access control data rate of 14Mbps. Just as in 802.11, the throughput performance becomes critical when the number of users increases. In this paper, we propose an Optimal Constant Contention Window (OCCW) mechanism, which dynamically selects best fixed contention window size according to the estimate of the number of contending stations in the channel. An analytical and simulation framework is used to find the optimal values of contention window size for best performance. Also, we implement a node estimation algorithm that each station can implement independently to find the number of contending stations. This is shown to significantly enhance the MAC performance under saturation conditions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. E. Ekici, S. Vural, J. McNair, and D. Al-Abri, "Secure Probabilistic Location Verification in Randomly Deployed Wireless Sensor Networks," to appear in Elsevier Ad Hoc Networks Journal, 2007.

Security plays an important role in the ability to deploy and retrieve trustworthy data from a wireless sensor network. Location verification is an effective first line of defense against attacks which take advantage of a lack, or compromise, of location information. In this work, a probabilistic approach to location verification in dense sensor networks is proposed. The proposed Probabilistic Location Verification (PLV) algorithm leverages the probabilistic dependence of the number of hops a broadcast packet traverses to reach a destination and the Euclidean distance between the source and the destination. A small number of verifier nodes are used to determine the plausibility of the claimed location, which is represented by a real number between zero and one. Using the calculated plausibility metric, it is possible to create arbitrary number of trust levels in the location claimed. Simulation studies verify that the proposed solution provides high performance in the face of various types of attacks.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. F. Zhu and J. McNair, "Multi-network Service Enhancements for Vertical Handoff Decision Algorithms," EURASIP Journal of Wireless Communications and Networking, special issue on Radio Resource Management in 3G+ Systems, Article ID 25861, 13 pages, 2006.

Future wireless networks must be able to coordinate services within a diverse network environment. One of the challenging problems for coordination is vertical handoff, which is the decision for a mobile node to handoff between different types of networks. While traditional handoff is based on received signal strength comparisons, vertical handoff must evaluate additional factors, such as, monetary cost, offered services, network conditions, and user preferences. In this paper, several optimizations are proposed for the execution of vertical handoff decision algorithms, with the goal of maximizing the quality of service experienced by each user. First, the concept of policy-based handoffs is discussed. Then, a multi-service vertical handoff decision algorithm (MUSE-VDA) and cost function are introduced to judge target networks based on a variety of user- and network-valued metrics. Finally, a performance analysis demonstrates that significant gains in the ability to satisfy user requests for multiple simultaneous services and a more efficient use of resources can be achieved from the MUSE-VDA optimizations.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. J. McNair, T. Tugcu, W. Wang, and J. Xie, "Cross Layer Optimizations for Mobile IP Networks," Elsevier Computer Networks Journal, vol. 49, no. 2, pp. 119-146, October 2005.

Among the characteristics of future wireless networks is the desire to support a wide range of wireless users and a diverse set of services from many different types of networks. One of the most often referenced networking protocols for diverse wireless and mobile networking is Mobile IP. Although recent focus has been on developing a micro-mobility architecture for Mobile IP, an emerging need is to enhance the unifying performance of Mobile IP by using a cross-layer, cross-technology approach to protocol design, in order to serve a wide variety of users, services, and networks. This paper provides a survey of recently proposed performance enhancements for Mobile IP and discusses the impact on network-level performance. After a review of the Mobile IP architecture, recent research on reducing handoff latency is discussed, including the use of layer 2 hints. Then, location registration is explored, including new techniques for authentication of mobile users. Finally, an overview of performance analysis models is provided to show the most recent approaches to determining the impact of mobility on a given network.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. J. McNair and F. Zhu, "Vertical Handoffs in Fourth Generation (4G) Multi-network Environments," IEEE Wireless Communications Magazine, vol. 11, no. 3, pp. 8-15, June 2004.

Revolutionary drivers for 4G include a push toward universal wireless access and ubiquitous computing through seamless personal and terminal mobility. One of the major challenges for seamless mobility is the criterion of a vertical handoff protocol: a handoff protocol for users that move between different types of networks. Traditional operations for handoff detection policies, decision metrics, and radio link transfer are not able to adapt to dynamic handoff criteria or react to user inputs and changing network availabilities. Nor are they able to deliver context-aware services or ensure network interoperability. Thus, new techniques are needed to manage user mobility between different types of networks. This article presents a tutorial on the design and performance issues for vertical hand-off in an envisioned multi-network fourth-generation environment. Various network architectures and technologies for 3G and beyond are described, including wireless LANs, cellular, satellite, and Mobile IP. Then the problem of vertical handoff is defined in the context of such a diverse network environment. Finally, research efforts to resolve the open problems are explored, including new techniques for dynamic handoff decision and detection algorithms and context-aware radio link transfer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. I.F. Akyildiz, J. McNair, J.S.M. Ho, H. Uzunalioglu, W. Wang, "Mobility Management in Next Generation Wireless Systems," Proceedings of the IEEE, August 1999.

This paper describes current and proposed protocols for mobility management for public land mobile network (PLMN)-based networks, mobile Internet protocol (IP) wireless asynchronous transfer mode (ATM) and satellite networks. The integration of these networks will be discussed in the context of the next evolutionary step of wireless communication networks. First, a review is provided of location management algorithms for personal communication systems (PCS) implemented over a PLMN network. The latest protocol changes for location registration and handoff are investigated for mobile IP followed by a discussion of proposed protocols for wireless ATM and satellite networks. Finally, an outline of open problems to be addressed by the next generation of wireless network service is discussed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
  1. I.F. Akyildiz, J. McNair, L. Carrasco, R. Puigjaner, and Y. Yesha, "Medium Access Control Protocols for Multimedia Traffic in Wireless Networks," IEEE Network Magazine, July/August1999. 

This article presents a survey on medium access control protocols for multimedia traffic in wireless networks. A basic overview of MAC protocol concepts is presented, and a framework is developed on which to base qualitative comparisons. The MAC protocols covered include third-generation TDMA and CDMA schemes intended for use in a single-hop wireless system. The operation of each protocol is explained, and its advantages and disadvantages ore presented. Finally, a qualitative comparative outline of the discussed protocols is provided, based on multimedia traffic requirements.

 

 

 

 

 

 
  1. I.F.Akyildiz, J. McNair, J.S.M. Ho, H. Uzunalioglu, W. Wang,"Mobility Management in Current and Future Communication Networks," IEEE NetworkMagazine , July/Aug 1998.

This article describes current and proposed protocols for mobility management for public land mobile networks (PLMNs), Mobile IP, wireless ATM, and satellite networks. The integration of these networks is discussed in the context of the next evolutionary step of wireless communications networks. First, a review is provided of location management algorithms for PCS implemented over a PLMN. The latest protocol changes for location registration and handoff are investigated for Mobile IP, followed by a discussion of proposed protocols for wireless ATM and satellite networks. Finally, an outline of open problems to be addressed by the next generation of wireless network service is discussed.

 

 

 

 

 

 


Conference Paper Abstracts

  1. A. Kumar, M. Sivakumar, M. Stringer-Blaschke, and J. McNair, “Priority-based Ring-Hybrid WDM LANs for Avionic Systems,” to appear in Proc. IEEE Avionics, Fiber-Optics and Photonics Conference, Victoria, BC, Canada, October 2007.
  2. J. McNair and Y. Guo “Coordination of Wireless Sensor Networks for Environment Monitoring Applications,” Workshop on Advances in Wireless Networking, Atlanta, Georgia, May 2007.
  3. D. Al-Abri, J. McNair and E. Ekici, "Location Verification using Communication Range Variation for Wireless Sensor Networks," in Proc. IEEE MILCOM, Washington, D.C., October 2006.
  4. Y. Guo and J. McNair, "Fault Tolerant Three Dimensional Environment Monitoring Using Wireless Sensor Networks," in Proc. IEEE MILCOM, Washington, D.C., October 2006.
  5. K. Tripathi, J.-D. Lee, H. Latchman, J. McNair and S. Katar, "Contention Window based Parameter Selection to Improve Powerline MAC Efficiency for Large Number of Users," in Proc. IEEE International Symposium on Power Line Communications (ISPLC), March 2006.
  6. P. Aggarwal, K. Tripathi, J. McNair, and H. Latchman, "Mobile Authentication and Authorization in Distributed Wireless Environments," in Proc. of  the International Workshop on Research Challenges in Security and Privacy for Mobile and Wireless Networks (WSPWN), March 2006. 
  7. Y. Guo and J. McNair, "Redundancy versus Lifetime Tradeoff Analysis for Environment Monitoring Using Wireless Sensor Networks," in Proc. of the IEEE Workshop on Dependability and Security in Sensor Networks and Systems, April 2006.
  8. E. Ekici, J. McNair and D. Al-Abri, "A Probabilistic Approach to Location Verification in Wireless Sensor Networks," in Proc. of IEEE International Conference on Communications (ICC), Istanbul, Turkey, June 2006.
  9. Y. Guo and J. McNair, "Reliability Enhancements for Environment Monitoring Using Wireless Sensor Networks," in Proc. of IEEE Wireless Communications and Networking Conference (WCNC), Las Vegas, Nevada, April 2006.
  10. A.K. Agarwal, W. Wang, and J. McNair, "An Experimental Study of Cross-Layer Security Protocols in Public Access Wireless Networks," in Proc. of Global Telecommunications Conference (GLOBECOM) , Vol. 3, pp. 1747--1751, December 2005.
  11. K. Tripathi, J. McNair, and H. Latchman, "Directional Antenna based Performance Evaluation of User Mobility in 802.11 Wireless Local Area Networks," in Proc. of the IFIP International Conference on Intelligence in Communication Systems (Intellcomm), Montreal, Canada, October 2005. 
  12. Y. Guo and J. McNair, "An Adaptive Sleep Protocol for Environment Monitoring Using Wireless Sensor Networks," in Proc. of the IASTED International Conference on Communications and Computer Networks, Marina del Rey, Californina, October 2005.
  13. F. Zhu and J. McNair, "Cross-Layer Design for Mobile IP Handoff Hints," in Proc. of the Spring 2005 IEEE Vehicular Technology Conference (Spring VTC), June 2005.
  14. S. Srinivasan, H. Latchman, J. Shea, T. Wong, and J. McNair, "Airborne Traffic Surveillance Systems Video Surveillance of Highway Traffic," in Proc. of the ACM Workshop on Video Surveillance and Sensor Networks, New York City, New York, October 2004.
  15. Y. Guo and J. McNair, "Cost-efficient Cluster Formation for Wireless Sensor Networks," in Proc. of the International Conference on Cybernetics and Information Technologies, Systems, and Applications (CITSA), Orlando, Florida, July 2004.
  16. P. Aggarwal, K. Tripathi, J. McNair, and H. Latchman, "Mobile Assisted Bit Sequence Authentication and Authorization (MABSAA)," in Proc. of the International Conference on Cybernetics and Information Technologies, Systems, and Applications (CITSA), Orlando, Florida, July 2004.
  17. F. Zhu and J. McNair, "Optimizations for Vertical Handoff Decision Algorithms," in Proc. of the IEEE Wireless Communications and Networking Conference (WCNC), pp. 867-872, March 2004.
  18. J. McNair, S. Penumetsa, K. Tripathi and H. Latchman, "A Performance Analysis of Medium Access Control in 802.11 WLANs using Antenna Sectorization," Workshop on Recent Advances in Computer Networking, April 2004.
  19. A. Bharathan and J. McNair, "An OPNET Modeler Simulation Study of the VISA Protocol for Mutli-Network Authentication," in Proc. of the OPNET Network Modeling and Simulation Conference (OPNETWORK 2003), Washington, D.C., August 25-29, 2003.
  20. J. McNair, I.F. Akyildiz, and M. Bender, "Handoffs for Real-Time Traffic in Mobile IP version 6 Networks," in Proc.of the IEEE Global Communications Conference (GLOBECOM), November 2001. 
  21. J. McNair, "Admission Control in Fourth Generation Heterogeneous Wireless Networks," in Proc. of the 5th World Multi-conference on Systemics, Cybernetics, and Informatics (SCI), July 2001.
  22. J. McNair, I.F. Akyildiz, S. Radhakrishnan, and G. Racherla,"Handoff Rerouting Scheme for Multimedia Connections in ATM-based Mobile Networks," in Proc. of the IEEE Vehicular Technology Conference (VTC) 2000,   September 2000.
  23. J. McNair, "Location Registration and Paging in Mobile Satellite Systems," in Proc. of the IEEE Symposium on Computers and Communications(ISCC '00), July 2000.
  24. J. McNair, I.F. Akyildiz, and M. Bender, "An Inter-System Handoff Technique for the IMT-2000 System," in Proc. of IEEE INFOCOM 2000, March 2000.

 

 

 

 

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