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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Wireless metropolitan area networks Standards"

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Sharifullina, Albina Y., Roman R. Galyamov, and Rimma S. Zaripova. "TECHNICAL PRINCIPLES FOR CREATING A WIRELESS LOCAL NETWORK WI-FI." T-Comm 15, no. 7 (2021): 28–33. http://dx.doi.org/10.36724/2072-8735-2021-15-7-28-33.

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This article discusses the stages of development, characteristics of a wireless local area network Wi-Fi, options for its topology and equipment used. Currently, there are such different types of wireless networks as Wireless Wide Area Network, Wireless Metropolitan Area Networks (Wireless Neighborhood Area Network), Wireless Local Area Network, Wireless Personal Area Network. Each of the listed wireless networks has its own specific range and application. Wireless LAN Wi-Fi refers to the Wireless Local Area Network. The first wireless LAN standard, Wi-Fi, was approved in 1997. From the moment of their appearance to the present day, the following standards of this network have appeared: 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ad, 802.11ax. For each standard, the speeds and frequency ranges at which the data transmission was carried out are indicated, and the technologies on which they are built are described. Wireless LAN Wi-Fi has three topologies: 1) Ad-Hoc (point-to-point) or Independent Basic Service Set; 2) Basic Service Set (“client / server”) and 3) Extended Service Set (“extended service areas”). To build a Wi-Fi network, network adapters, access points, routers, ADSL modems, Wi-Fi phones, Wi-Fi antennas, Wi-Fi repeaters are used. Wi-Fi adapters are used by devices that do not have a built-in Wi-Fi module. Wi-Fi access points are designed for organizing wireless access within a local network. Wi-Fi routers are designed to route traffic on a computer network. ADSL modems are used to access the Internet over a telephone line. Wi-Fi repeaters are used to expand the coverage of a wireless network using already installed equipment. Wi-Fi phones are wireless IP phones. Wi-Fi antennas are used to extend the range of a wireless network.
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Trimintzios, Panagiotis, and George Georgiou. "WiFi and WiMAX Secure Deployments." Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–28. http://dx.doi.org/10.1155/2010/423281.

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Анотація:
Wireless Broadband offers incredibly fast, “always on” Internet similar to ADSL and sets the user free from the fixed access areas. In order to achieve these features standardisation was achieved for Wireless LAN (WLANs) and Wireless Metropolitan Area Networks (WMANs) with the advent of IEEE802.11 and IEEE802.16 family of standards, respectively. One serious concern in the rapidly developing wireless networking market has been the security of the deployments since the information is delivered freely in the air and therefore privacy and integrity of the transmitted information, along with the user-authentication procedures, become a very important issue. In this article, we present the security characteristics for the WiFi and the WiMAX networks. We thoroughly present the security mechanisms along with a threat analysis for both IEEE 802.11 and the 802.16 as well as their amendments. We summarise in a comparative manner the security characteristics and the possible residual threats for both standards. Finally focus on the necessary actions and configurations that are needed in order to deploy WiFi and WiMAX with increased levels of security and privacy.
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Diet, Antoine M., Nicolas Ribière-Tharaud, Martine Villegas, and Geneviève Baudoin. "Front-end HPA/antenna for multi-radio." International Journal of Microwave and Wireless Technologies 4, no. 5 (May 1, 2012): 483–93. http://dx.doi.org/10.1017/s1759078712000372.

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This paper focuses on multi-radio front-end transmitter, a function implied by cognitive radio (0.5–6 GHz). S and C bands standards (wireless local and metropolitan area networks) present a challenge, due to the signal modulation schemes (orthogonal frequency division multiplex (OFDM)/WCDMA, wideband code division multiple access) dynamic (tens of dBs), driving us to a mandatory transmitter linearization. The idea is to provide frequency, flexibility, and average power control of a multi-radio high-efficiency front end for such signals (polar/envelope elimination and restoration (EER) structure). The study implies antennas design and average power control demonstration. Based on a switched mode power amplifier (PA), a discrete detuning is possible to adapt the PA at both “WiMAX” and “Wifi5” frequencies. This architecture amplifies signals with amplitude information. This is coded here by the ΣΔ/PWM (pulse width modulation) technique, to present a constant envelope signal. The amplitude information is restored by a pass-band radio frequency (RF) filter. The antenna can be designed with a notch, to reduce the filtering constraints (selectivity and standards coexistences) and to help in the restoration of amplitude information. Average power control is illustrated by voltage supply variation and results are a possible dynamic of 9.5 dB. To complete the analysis, the simulation of the propagation channel, including antennas, with CST (free space, line of sight) is imported under AGILENT-ADS.
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Barceló, J., A. Sfairopoulou, and B. Bellalta. "Wireless open metropolitan area networks." ACM SIGMOBILE Mobile Computing and Communications Review 12, no. 3 (July 31, 2008): 34–44. http://dx.doi.org/10.1145/1462141.1462146.

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Mollenauer, J. F. "Standards for metropolitan area networks." IEEE Communications Magazine 26, no. 4 (April 1988): 15–19. http://dx.doi.org/10.1109/35.442.

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Silvestre, J., V. Sempere, and T. Albero. "WIRELESS METROPOLITAN AREA NETWORKS FOR TELEMONITORING APPLICATIONS." IFAC Proceedings Volumes 40, no. 22 (2007): 261–64. http://dx.doi.org/10.3182/20071107-3-fr-3907.00036.

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Coronaro, Massimo, Giuseppe Freschi, Melchiorre Iudica, Claudio Pavanelli, and Daniele Roffinella. "Metropolitan area networks: Standards, services and performance." European Transactions on Telecommunications 2, no. 2 (March 1991): 189–97. http://dx.doi.org/10.1002/ett.4460020210.

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Hollick, Matthias, Tronje Krop, Jens Schmitt, Hans-Peter Huth, and Ralf Steinmetz. "Modeling mobility and workload for wireless metropolitan area networks." Computer Communications 27, no. 8 (May 2004): 751–61. http://dx.doi.org/10.1016/j.comcom.2003.10.015.

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Zeng, Feng, Yongzheng Ren, Xiaoheng Deng, and Wenjia Li. "Cost-Effective Edge Server Placement in Wireless Metropolitan Area Networks." Sensors 19, no. 1 (December 21, 2018): 32. http://dx.doi.org/10.3390/s19010032.

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Анотація:
Remote clouds are gradually unable to achieve ultra-low latency to meet the requirements of mobile users because of the intolerable long distance between remote clouds and mobile users and the network congestion caused by the tremendous number of users. Mobile edge computing, a new paradigm, has been proposed to mitigate aforementioned effects. Existing studies mostly assume the edge servers have been deployed properly and they just pay attention to how to minimize the delay between edge servers and mobile users. In this paper, considering the practical environment, we investigate how to deploy edge servers effectively and economically in wireless metropolitan area networks. Thus, we address the problem of minimizing the number of edge servers while ensuring some QoS requirements. Aiming at more consistence with a generalized condition, we extend the definition of the dominating set, and transform the addressed problem into the minimum dominating set problem in graph theory. In addition, two conditions are considered for the capacities of edge servers: one is that the capacities of edge servers can be configured on demand, and the other is that all the edge servers have the same capacities. For the on-demand condition, a greedy based algorithm is proposed to find the solution, and the key idea is to iteratively choose nodes that can connect as many other nodes as possible under the delay, degree and cluster size constraints. Furthermore, a simulated annealing based approach is given for global optimization. For the second condition, a greedy based algorithm is also proposed to satisfy the capacity constraint of edge servers and minimize the number of edge servers simultaneously. The simulation results show that the proposed algorithms are feasible.
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Jia, Mike, Weifa Liang, Zichuan Xu, Meitian Huang, and Yu Ma. "QoS-Aware Cloudlet Load Balancing in Wireless Metropolitan Area Networks." IEEE Transactions on Cloud Computing 8, no. 2 (April 1, 2020): 623–34. http://dx.doi.org/10.1109/tcc.2017.2786738.

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Дисертації з теми "Wireless metropolitan area networks Standards"

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Mallory, Patrick L. "Extending IEEE 802.11b Wireless Local Area Networks to the metropolitan area." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA406344.

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Vokál, Martin. "Principy zabezpečení bezdrátových standardů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412795.

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Анотація:
Computer networks are in the scope of the IEEE organization normalized by the 802 board which currently comprises six working groups for wireless communications. IEEE 802.11 for wireless local area networks, IEEE  802.15 for wireless personal area networks, IEEE 802.16 for wireless metropolitan area networks, IEEE 802.20 for mobile broadband wireless access, IEEE 802.21 for media independent handover and IEEE 802.22 for wireless regional area networks. This master's thesis focuses on a security analysis of particular standards, describes threats, vulnerabilities, current security measures and mutually compares wireless specifications from a security point of view. The conclusion is devoted to overall evaluation of the project, to its contributions, possible enhancements and continuation in the form of consequential studies.
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Wang, Peng. "Throughput optimization of urban wireless mesh networks." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 196 p, 2009. http://proquest.umi.com/pqdweb?did=1833647421&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Gordejuela, Sánchez Fernando. "Practical design of optimal wireless metropolitan area networks : model and algorithms for OFDMA networks." Thesis, University of Bedfordshire, 2009. http://hdl.handle.net/10547/134373.

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Анотація:
This thesis contributes to the study of the planning and optimisation of wireless metropolitan area networks, in particular to the access network design of OFDMAbased systems, where different parameters like base station position, antenna tilt and azimuth need to be configured during the early stages of the network life. A practical view for the solution of this problem is presented by means of the development of a novel design framework and the use of multicriteria optimisation. A further consideration of relaying and cooperative communications in the context of the design of this kind of networks is done, an area little researched. With the emergence of new technologies and services, it is very important to accurately identify the factors that affect the design of the wireless access network and define how to take them into account to achieve optimally performing and cost-efficient networks. The new features and flexibility of OFDMA networks seem particularly suited to the provision of different broadband services to metropolitan areas. However, until now, most existing efforts have been focused on the basic access capability networks. This thesis presents a way to deal with the trade-offs generated during the OFDMA access network design, and presents a service-oriented optimization framework that offers a new perspective for this process with consideration of the technical and economic factors. The introduction of relay stations in wireless metropolitan area networks will bring numerous advantages such as coverage extension and capacity enhancement due to the deployment of new cells and the reduction of distance between transmitter and receiver. However, the network designers will also face new challenges with the use of relay stations, since they involve a new source of interference and a complicated air interface; and this need to be carefully evaluated during the network design process. Contrary to the well known procedure of cellular network design over regular or hexagonal scenarios, the wireless network planning and optimization process aims to deal with the non-uniform characteristics of realistic scenarios, where the existence of hotspots, different channel characteristics for the users, or different service requirements will determine the final design of the wireless network. This thesis is structured in three main blocks covering important gaps in the existing literature in planning (efficient simulation) and optimisation. The formulation and ideas proposed in the former case can still be evaluated over regular scenarios, for the sake of simplicity, while the study of latter case needs to be done over specific scenarios that will be described when appropriate. Nevertheless, comments and conclusions are extrapolated to more general cases throughout this work. After an introduction and a description of the related work, this thesis first focuses on the study of models and algorithms for classical point-to-multipoint networks on Chapter 3, where the optimisation framework is proposed. Based on the framework, this work: - Identifies the technology-specific physical factors that affect most importantly the network system level simulation, planning and optimization process. - It demonstrates how to simplify the problem and translate it into a formal optimization routine with consideration of economic factors. - It provides the network provider, a detailed and clear description of different scenarios during the design process so that the most suitable solution can be found. Existing works on this area do not provide such a comprehensive framework. In Chapter 4: - The impact of the relay configuration on the network planning process is analysed. - A new simple and flexible scheme to integrate multihop communications in the Mobile WiMAX frame structure is proposed and evaluated. - Efficient capacity calculations that allow intensive system level simulations in a multihop environment are introduced. In Chapter 5: - An analysis of the optimisation procedure with the addition of relay stations and the derived higher complexity of the process is done. - A frequency plan procedure not found in the existing literature is proposed, which combines it with the use of the necessary frame fragmentation of in-band relay communications and cooperative procedures. - A novel joint two-step process for network planning and optimisation is proposed. Finally, conclusions and open issues are exposed.
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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.

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Aziz, Farhan Muhammad. "Implementation and Analysis of Wireless Local Area Networks for High-Mobility Telematics." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/33505.

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Анотація:
Wireless networks provide communications to fixed, portable and mobile users and offer substantial flexibility to both end-users and service providers. Current cellular/PCS networks do not offer cost effective high data rate services for applications, such as, telematics, traffic surveillance and rescue operations. This research studies the feasibility and behavior of outdoor implementation of low-cost wireless LANs used for high mobility telematics and traffic surveillance. A multi-hop experimental wireless data network is designed and tested for this purpose. Outdoor field measurements show the wireless coverage and throughput patterns for static and mobile users. The results suggest that multi-hop wireless LANs can be used for high mobility applications if some protocols are improved.
Master of Science
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Khan, Tehmina Karamat. "Resilience Routing in AdHoc Networks. A decision based routing tree mechanism that can establish routes in adhoc network, which may than be configured into logical dual ring. Also a system is proposed to embed the QoS mechanisms, resilience and reliability features from RPR." Thesis, University of Bradford, 2008. http://hdl.handle.net/10454/4871.

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Анотація:
As the number of people using wireless networks is increasing, the need to reduce the vulnerability of wireless networks from node or link failures that cause loss of data is becoming a priority. Also the present techniques and topologies used for wireless networking are not sufficient to handle the traffic load even if we solve the issues of reliability and resilience. Packet loss or delay is increasingly likely due to the increase in the number of packets as technology is evolving and more video and voice packets along with the data packets are being transmitted. Only the efficient and intelligent use of the shared medium can solve the problem and help in avoiding the collision or delay among the packets using a newly proposed intelligent topology. Wireless technology offers the potential to replace wires from many applications, particularly for the rapid deployment of networks for permanent or temporary use. Fiber_ optic metropolitan area networks (WAN) provide security and resilience. A target of the research was to match this in the wireless environment. This research investigates the suitability if using wireless technology for the establishment of a MAN by adding features to enhance resilience. We proposed a mechanism that may be rapidly deployed and provide automatic configuration. Research work and simulation design has been used to develop a new wireless network topology for an efficient and intelligent packet transmission by identifying reliable routes. This novel idea will help give wireless as well as mobile technology a clear edge over wired technology, not only in the case of mobility but also in the case of security of data and other services. A decision based routing tree mechanism has been developed, that can establish routes in an ad-hoc network which may than be configured into a logical dual ring. At the same time the proposed system proposes to embed the quality of service mechanisms, resilience, and reliability features from RPR. The simulations were created using Microsoft Visual Studio.Net for the Decision based routing algorithm. The results were compared with an existing LAR algorithm. We have obtained 95% confidence intervals on all the performance analysis results to indicate accuracy.
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Kubota, Flávio Adalberto 1987. "Escalonamento e controle de admissão cross-layer para redes IEEE 802.16." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275611.

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Анотація:
Orientadores: Nelson Luis Saldanha da Fonseca, Juliana Freitag Borin
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação
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Resumo: O padrão IEEE 802.16, também conhecido como WiMAX (Worldwide Interoperability for Microwave Access) e seu adendo, o IEEE 802.16-2005, apresentam uma solução de baixo custo para o acesso à Internet. A tecnologia é capaz de prover altas taxas de transferências de dados para amplas áreas geográficas, alto nível de escalabilidade e baixo custo de instalação e manutenção. Além disso, a tecnologia inclui uma arquitetura para provisão de Qualidade de Serviço (QoS) para aplicações de tempo real e aplicações que demandam altas taxas de transferências. Para garantir os requisitos de QoS, o padrão define um mecanismo de sinalização entre a estação base (BS) e a estação cliente (SS), cinco classes de serviço, um mecanismo de escalonamento e um mecanismo de controle de admissão de novas conexões. Entretanto, as políticas que devem ser utilizadas na implementação dos mecanismos de escalonamento e controle de admissão não foram especificadas no padrão. O mecanismo de escalonamento é responsável principalmente por garantir os requisitos de banda mínima das conexões, enquanto que o controle de admissão restringe o número de conexões para evitar a sobrecarga do enlace sem fio. Esta dissertação propõe dois mecanismos de escalonamento e um mecanismo de controle de admissão para redes baseadas no padrão IEEE 802.16. Os mecanismos propostos são totalmente compatíveis com o padrão IEEE 802.16 e são capazes de atender os requisitos de QoS das cinco classes de serviço. Devido a alta variabilidade do sinal do canal sem fio, os mecanismos de escalonamento para redes cabeadas não são adequados para dispositivos sem fio. Dessa forma, as duas políticas de escalonamento e o mecanismo de controle de admissão propostos utilizam informações sobre a qualidade do sinal, através de uma abordagem cross-layer, para promover um uso eficiente do enlace sem fio. As três soluções foram avaliadas através de experimentos de simulação utilizando um módulo para simulação de redes IEEE 802.16
Abstract: The IEEE 802.16 standard, also known as WiMAX (Worldwide Interoperability for Microwave Access) and its amendment, IEEE 802.16-2005, are a low cost solution for Internet access. The technology is capable of providing high data transfer rates for large geographic areas, high level of scalability and low cost of installation and maintenance. Furthermore, the technology includes an architecture for Quality of Service (QoS) provision for real-time applications and applications that require high transfer rates. To garantee the QoS requirements, the standard defines a signaling mechanism between Base Station (BS) and Subscriber Station (SS), five classes of service, a scheduling mechanism and an admission control mechanism for new connections. However, policies that must be used in the implementation of scheduling mechanisms and admission control mechanisms were not defined by the standard. The scheduling mechanism is responsible for guaranteeing the minimum reserved rate requirements for the connections, while the admission control mechanism restricts the number of connections in the network to avoid the wireless link saturation. This dissertation proposes two scheduling mechanisms and one admission control mechanism for IEEE 802.16 networks. The proposed mechanisms are fully-standard compliant and capable of meeting the QoS requirements of the five classes of service. Due to the high variability of wireless channel signal, the scheduling mechanisms for wired networks are not suitable for wireless networks. Thus, the two scheduling policies and admission control mechanism proposed use information about the quality of the signal, through a cross-layer approach, to promote an efficient use of the wireless link. The three solutions were evaluated through simulation experiments using a simulation module for IEEE 802.16 networks
Mestrado
Ciência da Computação
Mestre em Ciência da Computação
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Shrestha, Sanjeeb. "Addressing the hidden terminal problem in MU-MIMO WLANs with relaxed zero-forcing approach." Thesis, Optimal ZF precoding vector, 2017. http://hdl.handle.net/10453/116766.

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Анотація:
University of Technology Sydney. Faculty of Engineering and Information Technology.
An ever-increasing data rate demand, mainly due to the proliferation of numerous smart devices, enterprises’ mission critical networks, and industry automation, has mounted tremendous pressure on today’s Wireless Local Area Networks (WLANs). Several avenues such as bandwidth, constellation density, the Multiple Input Multiple Output (MIMO) technique, etc., have been explored, e.g., IEEE802.11n/ac standards, to keep up with the demand. Future WLAN standard, e.g., IEEE802.11ax, with potential technologies such as uplink Multi-User (MU)-MIMO, full duplex transmission, etc., is anticipated by 2019. Having said that, there has been a strong emphasis on solving the technical issues with WLANs along with the addition of new frontiers in order to cope with the data rate demanded. One such appending decade-long issue is the inevitable Hidden Terminal (HT) problem in a distributive, decentralised and densely deployed WLANs, which fundamentally arises because of the transmission time overlaps between different transmitters operating at a particular frequency. The consequence is that it causes collisions of signals, which sharply reduces the system throughput. In the context of MU-MIMO based WLANs, several designs for a general network scenario, without the consideration of the HT problem, have been proposed, bringing efficiency by avoiding the collision of signals. However, a dedicated design, which could effectively address the HT problem in MU-MIMO WLANs and also become interoperable (with legacy standards) and feasible with existing hardware, is lacking to the best of our knowledge. In this thesis, we propose a solution for the HT problem which has three fundamental attributes. First, a) at the Physical (PHY) layer, the Zero-forcing (ZF) transmission strategy with fairness and throughput aware precoding is proposed, b) a hybrid scheduling scheme, combining the packet position-based First In First Out (FIFO) and channel quality-based scheme, namely the Best of the Two Choices, is designed, c) at the Medium Access Control (MAC) layer, Degrees-of-Freedom (DoF) based Transmission Opportunity (TXOP) for Access Points (APs) is developed which is backed by an extended Point Coordination Function (PCF), d) an explicit channel acquisition framework is proposed for ZF which has a reduced signaling time overhead of 98.6740 μs compared to IEEE802.11ac. e) performance evaluation methodologies are: i) hardware testbed results of the PHY strategy, which shows a received SNR gain of about 6 dB on average, and about 10 dB in comparison to the HT scenario, ii) simulation results of the MAC design, which shows a constant throughput gain of 4 − 5 times w.r.t. the popular Request to Send/Clear to Send (RTS/CTS) solution. Second, to address the interoperability issue, we purposefully use the standard frame format except for some required logical changes. Notably, the transition mechanism of our design, and for any MAC that uses standard frame formats, is investigated meticulously. The transition condition, transition steps and transition frame formats are detailed. Third, to address a practical constraint of an imperfect Channel State Information (CSI) at APs, a) we incorporate the Finite Rate Feedback (FRF) model in our solution. The effects on system parameters such as quantisation error bounds, throughput loss w.r.t. perfect CSI, etc., are discussed with closed-form analytical expressions, b) instead of an ideal ZF technique, a Relaxed ZF (RZF) framework is considered, in which the interference and power constraints of the optimisation problem are relaxed to the interference upper bound and to the maximum transmit power respectively. Our results lead to a distributive algorithm for calculating the optimal ZF precoding vector which suits the distributive, decentralised and uncoordinated nature of MU-MIMO WLANs.
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Figueiredo, Fabricio Lira. "Capacidade e roteamento em redes metropolitanas sem fio hibridas." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261046.

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Анотація:
Orientador: Paulo Cardieri
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Resumo: As redes metropolitanas sem fio (Wireless Metropolitan Area Networks - WMAN) modernas representam uma tendência tecnológica que viabiliza a ampliação da disponibilidade de acesso a serviços banda larga em todo o mundo. Estas redes se baseiam principalmente nas tecnologias WiMAX e Wi-Fi ad hoc e mesh, que apresentam características complementares e ermitem, a partir de sua integração, construir uma rede metropolitana sem fio híbrida com suporte a múltiplos serviços, mais flexível e de custo otimizado. Esta é a solução de rede investigada nesta tese, que exige o tratamento de diversos desafios tecnológicos, principalmente com o intuito de maximizar cobertura e desempenho da rede. Para tanto, é proposta uma abordagem que consiste em adotar, ao mesmo tempo, metodologias de planejamento e protocolos eficientes para redes WMAN híbridas. Neste contexto, dois aspectos de grande relevância são tratados: esquemas de roteamento de pacotes eficientes para redes Wi-Fi ad hoc e mesh e o planejamento de redes WMAN híbridas. Os resultados obtidos nesta tese representam contribuições significativas para o tratamento destes aspectos, e podem ser adotados para aumentar a eficiência de soluções de redes WMAN híbridas.
Abstract: Modern wireless metropolitan area networks (WMAN) correspond to technological tendency that has contributed to the growth of broadband services availability all over the world. These networks are currently based on technologies WiMAX, Wi-Fi ad hoc e mesh, which support complimentary features, thus allowing the design of multi- service hybrid WMANs, which correspond to a more flexible and cost-effective solution. This approach is the key research subject of this thesis, which requires that several technological challenges are handled, aiming at maximizing network coverage and performance. In this thesis, this problem is addressed by adopting network planning techniques and protocols that jointly contribute to increase coverage and efficiency of hybrid WMAN. In this context, two major aspects are considered: routing in Wi-Fi ad hoc and mesh and planning of hybrid WMAN. The results from this work correspond to significant contributions for each subject and can be adopted for increasing efficiency of hybrid WMAN solutions.
Doutorado
Telecomunicações e Telemática
Doutor em Engenharia Elétrica
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Книги з теми "Wireless metropolitan area networks Standards"

1

Building wireless community networks. 2nd ed. Beijing: O'Reilly, 2003.

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Building wireless community networks. Sebastopol, CA: O'Reilly, 2002.

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3

1977-, Zhang Yan, and Chen Hsiao-Hwa, eds. Wireless metropolitan area networks: WiMAX and beyond. Boca Raton: Taylor & Francis, 2007.

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4

Xiao, Yang. Emerging wireless LANs, wireless PANs, and wireless MANs: IEEE 802.11, IEEE 802.15, IEEE 802.16 wireless standard family. Hoboken, N.J: Wiley, 2008.

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5

Committee, IEEE Computer Society LAN/MAN Standards. IEEE standard for Information technology: Telecommunications and information exchange between systems-- local and metropolitan area networks-- specific requirements : Wireless LAN medium access control (MAC) and physical layer (PHY) specifications : amendment 4 : further higher data rate extension in the 2.4 GHz band. New York, N.Y: Institute of Electrical and Electronics Engineers, 2003.

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6

Maode, Ma, ed. Current technology developments of WiMax systems. [Dordrecht?]: Springer, 2009.

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7

1968-, Tang Seok-Yee, Müller, Peter, 1961 July 8-, and Sharif Hamid R. 1958-, eds. WiMAX security and quality of service: An end-to-end perspective. Chichester, West Sussex, U.K: Wiley, 2010.

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1952-, Lai Ming, ed. WIMAX technology and network evolution. Hoboken, N.J: Wiley, 2010.

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1970-, Casati Alessio, ed. Fixed mobile convergence: Voice over Wi-Fi, IMS, UMA/GAN, femtocells, and other enablers. New York: McGraw-Hill, 2008.

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A, Train David, ed. Metropolitan area networks: Concepts, standards, and services. New York: McGraw-Hill, 1992.

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Частини книг з теми "Wireless metropolitan area networks Standards"

1

Chen, Lei, Narasimha Shashidhar, Shengli Yuan, and Ming Yang. "Security in Wireless Metropolitan Area Networks." In Wireless Network Security, 59–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36511-9_4.

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Hoymann, Christian, and Bernhard H. Walke. "IEEE 802.16 Wireless Metropolitan Area Networks." In IEEE 802 Wireless Systems, 147–95. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/9780470058800.ch7.

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Schmid, Stefan, Joe Finney, Maomao Wu, Adrian Friday, Andrew Scott, and Doug Shepherd. "An Access Control Architecture for Metropolitan Area Wireless Networks." In Interactive Distributed Multimedia Systems, 29–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-44763-6_5.

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4

Zander, Jens, and Karl-Axel Åhl. "On the Capacity of Time-Space Switched Cellular Radio Link Systems for Metropolitan Area Networks." In Wireless Communications, 127–41. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3144-9_8.

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5

Xu, Xiaolong, Yuhao Chen, Lianyong Qi, Jing He, and Xuyun Zhang. "A Balanced Cloudlet Management Method for Wireless Metropolitan Area Networks." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 62–75. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12971-2_4.

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6

Won, Jeong-Jae, Choong-Ho Cho, Hyong-Woo Lee, and Victor C. M. Leung. "Stabilization of Contention-Based CDMA Ranging Channel in Wireless Metropolitan Area Networks." In NETWORKING 2005. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems, 1255–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11422778_101.

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Anisimov, Alexey, Sergey Andreev, Olga Galinina, and Andrey Turlikov. "Comparative Analysis of Sleep Mode Control Algorithms for Contemporary Metropolitan Area Wireless Networks." In Smart Spaces and Next Generation Wired/Wireless Networking, 184–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14891-0_17.

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8

Pascoe, J. S., V. S. Sunderam, R. J. Loader, and G. Sibley. "Towards Mobile Computational Application Steering: Visualizing The Spatial Characteristics of Metropolitan Area Wireless Networks." In Lecture Notes in Computer Science, 665–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46080-2_69.

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9

Chen, Lei, Cihan Varol, Qingzhong Liu, and Bing Zhou. "Security in Wireless Metropolitan Area Networks." In Security, Privacy, Trust, and Resource Management in Mobile and Wireless Communications, 11–27. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4691-9.ch002.

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Анотація:
Thanks to the much larger geographical coverage and pleasing bandwidth of data transmissions, Wireless Metropolitan Area Networks (WMANs) have become widely accepted in many countries for everyday communications. Two of the main wireless technologies used in WMANs, the Worldwide Interoperability for Microwave Access (WiMAX, also known as Wireless Local Loop or WLL) and Long Term Evolution (LTE), have generated billions of dollars in the ever-growing wireless communication market. While the IEEE 802.16 standards for WiMAX and the 3GPP standards LTE are updated and improved almost annually, it is inevitable that current standards still contain a number of security vulnerabilities, potentially leading to various security attacks. To address the security concerns in these two WMANs technologies, this chapter presents the technical details of security aspects of WiMAX and LTE. More specifically, the key generation, authentication, data, and key confidentiality and integrity of both technologies are deliberated. The chapter ends with a discussion of the security vulnerabilities, threats, and countermeasures of WiMAX and LTE.
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10

Kostopoulos, Giorgos, Nicolas Sklavos, and Odysseas Koufopavlou. "Security and Privacy Approaches for Wireless Local and Metropolitan Area Networks (LANs & MANs)." In Handbook of Research on Wireless Security, 732–46. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-899-4.ch046.

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Анотація:
Wireless communications are becoming ubiquitous in homes, offices, and enterprises with the popular IEEE 802.11 wireless local area network (LAN) technology and the up-and-coming IEEE 802.16 wireless metropolitan area networks (MAN) technology. The wireless nature of communications defined in these standards makes it possible for an attacker to snoop on confidential communications or modify them to gain access to home or enterprise networks much more easily than with wired networks. Wireless devices generally try to reduce computation overhead to conserve power and communication overhead to conserve spectrum and battery power. Due to these considerations, the original security designs in wireless LANs and MANs used smaller keys, weak message integrity protocols, weak or one-way authentication protocols, and so forth. As wireless networks became popular, the security threats were also highlighted to caution users. A security protocol redesign followed first in wireless LANs and then in wireless MANs. This chapter discusses the security threats and requirements in wireless LANs and wireless MANs, with a discussion on what the original designs missed and how they were corrected in the new protocols. It highlights the features of the current wireless LAN and MAN security protocols and explains the caveats and discusses open issues. Our aim is to provide the reader with a single source of information on security threats and requirements, authentication technologies, security encapsulation, and key management protocols relevant to wireless LANs and MANs.
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Тези доповідей конференцій з теми "Wireless metropolitan area networks Standards"

1

Aggarwal, Vaneet, Rittwik Jana, Jeffrey Pang, K. K. Ramakrishnan, and N. K. Shankaranarayanan. "Characterizing fairness for 3G wireless networks." In Metropolitan Area Networks (LANMAN). IEEE, 2011. http://dx.doi.org/10.1109/lanman.2011.6076940.

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Bilgi, Mehmet, and Murat Yuksel. "Packet-based simulation for optical wireless communication." In Metropolitan Area Networks (LANMAN). IEEE, 2010. http://dx.doi.org/10.1109/lanman.2010.5507166.

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Cho, Sangman, Srinivasan Ramasubramanian, Onur Turkcu, and Suresh Subramaniam. "Performance analysis of multi-channel wireless infrastructure networks." In Metropolitan Area Networks (LANMAN). IEEE, 2010. http://dx.doi.org/10.1109/lanman.2010.5507175.

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4

Colitti, Walter, Kris Steenhaut, Niccolo De Caro, Bogdan Buta, and Virgil Dobrota. "Evaluation of constrained application protocol for wireless sensor networks." In Metropolitan Area Networks (LANMAN). IEEE, 2011. http://dx.doi.org/10.1109/lanman.2011.6076934.

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Velayos, Hector, and Gunnar Karlsson. "A distribution system for large scale IEEE 802.11 Wireless LANs." In Metropolitan Area Networks (LANMAN). IEEE, 2008. http://dx.doi.org/10.1109/lanman.2008.4675836.

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6

Choumas, Konstantinos, Thanasis Korakis, and Leandros Tassiulas. "New prioritization schemes for QoS provisioning in 802.11 wireless networks." In Metropolitan Area Networks (LANMAN). IEEE, 2008. http://dx.doi.org/10.1109/lanman.2008.4675839.

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Patel, Umang, Trisha Biswas, and Rudra Dutta. "A routing approach to jamming mitigation in wireless multihop networks." In Metropolitan Area Networks (LANMAN). IEEE, 2011. http://dx.doi.org/10.1109/lanman.2011.6076932.

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8

Ahuja, Sandeep Kour, and Srinivasan Ramasubramanian. "Analyzing channel assignment with rearrangement in multi-channel wireless line networks." In Metropolitan Area Networks (LANMAN). IEEE, 2008. http://dx.doi.org/10.1109/lanman.2008.4675850.

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9

Chen, Liping, Ahmed H. Zahran, and Cormac J. Sreenan. "IEEE 802.21-enabled ALIVE-HO for media streaming in heterogeneous wireless networks." In Metropolitan Area Networks (LANMAN). IEEE, 2010. http://dx.doi.org/10.1109/lanman.2010.5507164.

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Abusubaih, Murad, Berthold Rathke, and Adam Wolisz. "Collaborative setting of RTS/CTS in multi-rate multi-BSS IEEE 802.11 wireless LANs." In Metropolitan Area Networks (LANMAN). IEEE, 2008. http://dx.doi.org/10.1109/lanman.2008.4675840.

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