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Maqhat, Bakeel, Mohd Dani Baba, Ruhani Ab Rahman, and Anwar Saif. "Scheduler Algorithm for IEEE802.11n Wireless LANs." International Journal of Future Computer and Communication 3, no. 4 (2014): 222–26. http://dx.doi.org/10.7763/ijfcc.2014.v3.300.
Ahmadi, Hamid, Arvind Krishna, and Richard O. LaMaire. "Design issues in wireless LANs." Journal of High Speed Networks 5, no. 1 (1996): 87–104. http://dx.doi.org/10.3233/jhs-1996-5107.
Eardley, P. L., D. Wood, D. R. Wisely, and P. McKee. "Holograms for optical wireless LANs." IEE Proceedings - Optoelectronics 143, no. 6 (December 1, 1996): 365–69. http://dx.doi.org/10.1049/ip-opt:19960875.
Lee, T. H., H. Samavati, and H. R. Rategh. "5-GHz CMOS wireless LANs." IEEE Transactions on Microwave Theory and Techniques 50, no. 1 (2002): 268–80. http://dx.doi.org/10.1109/22.981280.
Abstract More and more mobile computing devices such as smartphones with limited battery power are being used in IEEE 802.11 wireless LANs, and WiFi sensors with very limited battery power are expected to get Internet access through wireless LANs in the near future. We propose an efficient MAC (Medium Access Control) protocol so that WiFi sensors and mobile devices are connected to APs (Access Points) in IEEE 802.11 wireless LANs in an energy-efficient manner.
The usage of Wireless Local Area Networks is increasing rapidly throughout the world. The technology today is not quality proof for the market’s demands. We want to be able to completely wireless perform our demands, such as confer via video or IP-telephony. This is what we call multimedia real-time traffic. It may be achieved over the physical infrastructure in some areas with good results. The goal of this Master’s Thesis is to analyze the possibilities and give solutions and suggestions to achieve multimedia over the wireless networks, with emphasis on the protocol Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA).
This Master’s Thesis is a theoretical study and the suggested solutions have not been tested in an actual wireless network. Instead they have been tested by computer simulation to give an indication of improvements. Basic configurations are set to the same as in the IEEE 802.11 standard.
Different methods to reach possible improvements of a WLAN are studied, analyzed and simulated. Such methods are: priority, congestion management and multi-channel protocol. Simulations results show how the priority affects the wireless network and how a multi-channel protocol improves the latency and efficiency of the network. The simulation part is concentrated to show improvements of real-time traffic, which is time sensitive. With a multi- channel protocol the network can allow more users, i.e. more traffic. Also, the network will gain improvement in stability.
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Ross, David Andrew. "Securing IEEE 802.11 wireless LANs." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/37638/1/David_Ross_Thesis.pdf.
As the acceptance and popularity of wireless networking technologies has proliferated, the security of the IEEE 802.11 wireless local area network (WLAN) has advanced in leaps and bounds. From tenuous beginnings, where the only safe way to deploy a WLAN was to assume it was hostile and employ higherlayer information security controls, to the current state of the art, all manner of improvements have been conceived and many implemented. This work investigates some of the remaining issues surrounding IEEE 802.11 WLAN operation. While the inherent issues in WLAN deployments and the problems of the original Wired Equivalent Privacy (WEP) provisions are well known and widely documented, there still exist a number of unresolved security issues. These include the security of management and control frames and the data link layer protocols themselves. This research introduces a novel proposal to enhance security at the link layer of IEEE 802.11 WLANs and then conducts detailed theoretical and empirical investigation and analysis of the eects of such proposals. This thesis �rst de�nes the state of the art in WLAN technology and deployment, including an overview of the current and emerging standards, the various threats, numerous vulnerabilities and current exploits. The IEEE 802.11i MAC security enhancements are discussed in detail, along with the likely outcomes of the IEEE 802.11 Task Group W1, looking into protected management frames. The problems of the remaining unprotected management frames, the unprotected control frames and the unprotected link layer headers are reviewed and a solution is hypothesised, to encrypt the entire MAC Protocol Data Unit (MPDU), including the MAC headers, not just the MAC Service Data Unit (MSDU) commonly performed by existing protocols. The proposal is not just to encrypt a copy of the headers while still using cleartext addresses to deliver the frame, as used by some existing protocols to support the integrity and authenticity of the headers, but to pass the entire MPDU only as ciphertext to also support the con�dentiality of the frame header information. This necessitates the decryption of every received frame using every available key before a station can determine if it is the intended recipient. As such, this raises serious concerns as to the viability of any such proposal due to the likely impact on throughput and scalability. The bulk of the research investigates the impacts of such proposals on the current WLAN protocols. Some possible variations to the proposal are also provided to enhance both utility and speed. The viability this proposal with respect to the eect on network throughput is then tested using a well known and respected network simulation tool, along with a number of analysis tools developed speci�cally for the data generated here. The simulator's operation is �rst validated against recognised test outputs, before a comprehensive set of control data is established, and then the proposal is tested and and compared against the controls. This detailed analysis of the various simulations should be of bene�t to other researchers who need to validate simulation results. The analysis of these tests indicate areas of immediate improvement and so the protocols are adjusted and a further series of experiments conducted. These �nal results are again analysed in detail and �nal appraisals provided.
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Lin, Xiaoyang. "Improving fairness in the 802.11 infrastructure wireless local area networks /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?COMP%202005%20LIN.
Ozturk, Huseyin Selcuk. "Evaluation of secure 802.1X port-based network access authentication over 802.11 wireless local area networks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FOzturk.pdf.
Tay, Chye Bin. "Wireless LAN extension." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FTay.pdf.
Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, March 2003. Thesis advisor(s): Norman F. Schneidewind, Douglas E. Brinkley. Includes bibliographical references (p. 67). Also available online.
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Sattari, Afsaneh. "An experimental study of wireless LANs." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27420.
Wireless equipment based on IEEE 802.11 standard has been increasingly successful during the recent years. The popularity of wireless LAN hardware, and increasing use of different applications has brought challenges and competition among different vendors of IEEE 802.11 standards. Traditionally, such equipment has mainly been used indoors to allow users to wirelessly connect to the Internet or to a LAN.
In this thesis we evaluate wireless equipment of the 802.11b standard. We consider typical scenarios and also consider typical transport protocols (i.e. TCP and UDP) in order to observe the performance of the system in real settings.
Although the performance of a system mainly depends on the following metrics: throughput, packet loss, delay and jitter, in this thesis we take into consideration a large number of metrics of performance in order to obtain a better understanding of the way diverse factors impact performance in real wireless LANs. Indeed, we perform a large set of tests and measurements with different hardware. This let us obtain a more complete view of the performance of the system. Such parameters are important in real networks since its interrelation affect the quality of service perceived by various services carried by the network.
We observe that real throughput of WLANs is sensibly lower than the raw amount usually advertised by the manufacturers. From the obtained results we conclude that in addition to the lack of efficiency of the MAC layer, this situation is also due to the combination of other factors that are detailed in the thesis. We found that one of the most important factor affecting the performance is a corner in the signal path between the sender and the receiver, which significantly affects the performance. We also describe some different hardware and software tools that are useful to carry out the tasks required for a performance study in a wireless LAN.
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Oudit, Suzanne Riggs Lloyd Stephen. "Design of an outdoor wireless local area network and antenna analysis." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/OUDIT_SUZANNE_45.pdf.
Wireless LANs (WLANs) based on the IEEE 802.11 standard have become an integral part of today’s indoor wireless communication infrastructure. As WLAN deployments become more prevalent and densely deployed, the nodes in these WLANs start to create congestion and interference with each other. This congestion and interference fundamentally limits the performance of these coexisting WLANs. We analyze the capacity limits of such densely deployed WLANs. We begin our analysis by investigating the suitability of the attributes of WLANs, namely their cooperative operation based on locally available information, for indoor high-capacity wireless access provisioning. We compare the cooperative class of wireless systems with another class of systems whose users behave selfishly. Following this qualitative assessment, we perform a detailed, qualitative analysis of the capacity of densely deployed WLANs in terms of a number of key environmental and operational parameters. The indoor propagation environment has a significant influence on the congestion and interference that these coexisting WLANs exert on each other. Therefore we investigate the impact of propagation environment on the aggregate throughput of densely deployed WLANs. As WLANs are deployed in close proximity of each other, the transmissions in one WLAN start to influence the outcome of transmissions in other WLANs. The manner in which the access points are deployed, and the manner in which stations associate themselves with the available access points around themselves is shown to be an influential factor in the performance of these coexisting WLANs. Therefore, we investigate the impact of random versus planned access point deployment on performance of densely deployed WLANs. Similarly, we investigate the impact of stations associating with the access point with the strongest signal or with another sufficiently strong access point in their vicinity. Furthermore, we investigate the throughput of densely deployed WLANs when operating with bounded delay. More specifically we examine the case when the input traffic arriving at the transmitters are expected to reach their destination within a certain time period, thus the transmit queues cannot grow without bounded and the system should operate at a stable point. The indoor propagation environment, creates complex interference relationships between nodes in coexisting WLANs.These complex interference relationships are compounded by the node interactions dictated by the nonlinear algorithms in the IEEE 802.11 MAC protocol, thus the problem of estimating the performance of these coexisting WLANs by means of simple analytical models becomes difficult. In contrast, detailed packet level simulations provide accurate performance estimates, although such analyses are computationally expensive. Therefore we seek to provide a model to estimate the throughput of densely deployed WLANs based on empirical throughput results of detailed simulations of such densely deployed WLANs. In addition, in our effort to develop an empirical throughput model for densely deployed WLANs, we develop a measure which we call “cell congestion” to be able to order and compare different propagation environments, and an “effective density” concept which accounts for the influence of the propagation environment on the congestion and interference experienced by a WLAN deployment of a given density. We expect these concepts to be useful in improving the operation of WLANs to be able to meet the predicted increase in demand for capacity.
QC 20141020
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Xi, Weihua. "MAC enhancements for high speed wireless LANs." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446178.
Glas, Jack, Mihai Banu, Joachim Hammerschmidt, Vladimir Prodanov, and Peter Kiss. "Wireless LANs." In Analog Circuit Design, 317–43. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47951-6_14.
Obaidat, M. S., G. I. Papadimitriou, and S. Obeidat. "Wireless LANs." In Handbook of Computer Networks, 896–916. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118256114.ch57.
Henderson, Tristan, and David Kotz. "Measuring Wireless LANs." In Mobile, Wireless, and Sensor Networks, 5–27. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/0471755591.ch1.
Passas, Nikos, Dimitris Skyrianoglou, and Apostolis K. Salkintzis. "Supporting UMTS QoS in Wireless LANs." In Personal Wireless Communications, 555–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39867-7_54.
Kruys, Jan, and Luke Qian. "Spectrum Sharing with Wireless LANs." In Sharing RF Spectrum with Commodity Wireless Technologies, 129–45. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1585-1_7.
Jamin, Antony, Petri Mähönen, and Zach Shelby. "Software Radio Implementability of Wireless LANs." In Software Radio, 173–85. London: Springer London, 2001. http://dx.doi.org/10.1007/978-1-4471-0343-1_15.
Chakraborty, Tamal, Iti Saha Misra, and Ramjee Prasad. "VoIP Over Wireless LANs—Prospects and Challenges." In Springer Series in Wireless Technology, 71–93. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95594-0_4.
Zhao, Qinglin, Taka Sakurai, Jiguo Yu, and Limin Sun. "On the Stable Throughput in Wireless LANs." In Wireless Algorithms, Systems, and Applications, 745–55. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21837-3_73.
QasMarrogy, Ghassan. "Practical Analysis of IEEE 802.11ax Wireless Protocol in Wi-Fi Boosters Environments." In 3rd International Conference of Mathematics and its Applications. Salahaddin University-Erbil, 2020. http://dx.doi.org/10.31972/ticma22.04.
All the world now is depending on networks to share information between the users, where different data types are transferred wirelessly from network to network. Using wireless LANs are important to connect the users and share the data, these Wireless LANs have different types of obstacles that affect the data sharing or the wireless signal, such as, compatibility wireless protocol types, range coverage, walls penetration, moving devices, different routing protocols, data transferred types, weak signal, and many more. In this paper a practical analysis will be made to the latest IEEE 802.11ax wireless protocol to be compared with two types of Wi-Fi booster’s networks, Mesh and Extender Wi-Fi, while transferring 4k video size data rate, inside a room and on different rooms for wall penetration analysis, while measuring the throughput, delay, and signal strength metrics. The main importance of this paper is to give a more practical understanding and avoid the main problems of using the wireless protocol 802.11ax in different network types.
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Kathiravan, K., R. Ramya, and Tinu Sara Titus. "Multimedia Transmission over Wireless LANs." In 2009 First International Conference on Computational Intelligence, Communication Systems and Networks (CICSYN). IEEE, 2009. http://dx.doi.org/10.1109/cicsyn.2009.37.
Findlay, D. "3G interworking with wireless LANs." In Third International Conference on 3G Mobile Communication Technologies. IEE, 2002. http://dx.doi.org/10.1049/cp:20020426.
Oe, Kunishige, Syuichi Sato, Motoyuki Okayama, and Toshihiro Kubota. "High-speed wireless optical LANs." In ITCom 2001: International Symposium on the Convergence of IT and Communications, edited by Eric J. Korevaar. SPIE, 2001. http://dx.doi.org/10.1117/12.449807.
Bessios, Anthony G. "Frequency division multiplexing in wireless underwater acoustic LANs." In Wireless Communications. SPIE, 1995. http://dx.doi.org/10.1117/12.220875.
Sharony, J., and M. Sen. "Bandwidth management in 802.11 wireless LANs." In 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1313271.
Patil, Preetam, and Varsha Apte. "Sizing of IEEE 802.11 wireless LANs." In the 3rd ACM international workshop. New York, New York, USA: ACM Press, 2005. http://dx.doi.org/10.1145/1080730.1080748.
Kostoff, Ronald N., Rene Tshiteya, Jesse Stump, Guido Malpohl, and George Karypis. Science and Technology Text Mining: Wireless LANS. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada437247.
Stanley, D., J. Walker, and B. Aboba. Extensible Authentication Protocol (EAP) Method Requirements for Wireless LANs. RFC Editor, March 2005. http://dx.doi.org/10.17487/rfc4017.
King, J. IEEE 802.11 Wireless LAN Security White Paper. Office of Scientific and Technical Information (OSTI), October 2001. http://dx.doi.org/10.2172/15005940.
DEPARTMENT OF THE ARMY WASHINGTON DC. U.S. Army Wireless Local Area Networks (LAN) and Wireless Portable Electronic Devices (PED) Policy. Fort Belvoir, VA: Defense Technical Information Center, April 2002. http://dx.doi.org/10.21236/ada402218.
Konstantinou, Theodora, Diala Haddad, Akhil Prasad, Ethan Wright, Konstantina Gkritza, Dionysios Aliprantis, Steven Pekarek, and John E. Haddock. Feasibility Study and Design of In-Road Electric Vehicle Charging Technologies. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317353.
Electric Roadways (ERs) or Dynamic Wireless Charging (DWC) lanes offer an alternative dynamic and wireless charging method that has the potential of giving electric vehicles (EV) limitless range while they are moving. Heavy-duty vehicles (HDVs) are expected to be early adopters of the DWC technology due to the higher benefits offered to these vehicles that are traveling on fixed routes. The goal of this project was to assess the feasibility of ERs in Indiana and design a test bed for in-road EV charging technologies. The most suitable locations for implementing DWC lanes were identified on interstates that are characterized by high truck traffic. Using I-65 S as a case study, it was found that DWC can be economically feasible for the developer and competitive for the EV owner at high and medium future projections of EV market penetration levels. However, the existing substations are unlikely to serve future DWC needs for HDVs. Thus, consideration should be given to substation expansion to support EVs as market penetration expands. Implementing the DWC technology on interstates and jointly with major pavement preservation activities is recommended. Large scale deployment can significantly reduce the high initial investment. Renewable energy resources (solar and wind) deployed in the vicinity of ERs can reduce the electricity costs and associated greenhouse gas emissions.
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Baral, Aniruddha, Jeffrey Roesler, M. Ley, Shinhyu Kang, Loren Emerson, Zane Lloyd, Braden Boyd, and Marllon Cook. High-volume Fly Ash Concrete for Pavements Findings: Volume 1. Illinois Center for Transportation, September 2021. http://dx.doi.org/10.36501/0197-9191/21-030.
High-volume fly ash concrete (HVFAC) has improved durability and sustainability properties at a lower cost than conventional concrete, but its early-age properties like strength gain, setting time, and air entrainment can present challenges for application to concrete pavements. This research report helps with the implementation of HVFAC for pavement applications by providing guidelines for HVFAC mix design, testing protocols, and new tools for better quality control of HVFAC properties. Calorimeter tests were performed to evaluate the effects of fly ash sources, cement–fly ash interactions, chemical admixtures, and limestone replacement on the setting times and hydration reaction of HVFAC. To better target the initial air-entraining agent dosage for HVFAC, a calibration curve between air-entraining dosage for achieving 6% air content and fly ash foam index test has been developed. Further, a digital foam index test was developed to make this test more consistent across different labs and operators. For a more rapid prediction of hardened HVFAC properties, such as compressive strength, resistivity, and diffusion coefficient, an oxide-based particle model was developed. An HVFAC field test section was also constructed to demonstrate the implementation of a noncontact ultrasonic device for determining the final set time and ideal time to initiate saw cutting. Additionally, a maturity method was successfully implemented that estimates the in-place compressive strength of HVFAC through wireless thermal sensors. An HVFAC mix design procedure using the tools developed in this project such as the calorimeter test, foam index test, and particle-based model was proposed to assist engineers in implementing HVFAC pavements.
