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Dissertations / Theses on the topic 'MAC protocol design; cloud'

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Published: 2 June 2025

Last updated: 31 July 2025

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1

Jang, Beakcheol. "Wireless MAC Protocol Design and Analysis." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-05262009-175059/.

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Wireless networks are becoming very common due to their advantages such as rapid deployment and support for mobility. In this dissertation, we design and analyze the Medium Access Control (MAC) protocol for two popular wireless networks: Wireless Sensor Networks (WSNs) and Wireless Local Area Networks (WLANs). For WSNs, we design and analyze an energy efficient MAC protocols. Energy efficiency is a key design factor of a MAC protocol for WSNs. Existing preamble-sampling based MAC protocols have large overheads due to their preambles and are inefficient at large wakeup intervals. Synchronous sc

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Jha, Satish Chandra. "MAC protocol design and resource management for distributed cognitive radio networks." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44082.

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Cognitive radio (CR) has drawn extensive attention as a promising technique to enable dynamic spectrum allocation in wireless networks in order to increase spectrum utilization. Since coordination and communication over wireless medium is mainly performed at medium access control (MAC) layer, design of a smart MAC is vital for successful deployment of distributed CR network (DCRN). In this thesis, we first investigate research challenges specific to DCRN MAC design and present an overview of current state-of-the-art DCRN MAC protocols. We then propose a MAC protocol called OMC-MAC to address m

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Wang, Lin. "Multi-service CDMA cellular systems : capacity analysis and MAC protocol design." Thesis, King's College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406067.

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Bera, Soumava. "Design and Implementation of a MAC protocol for Wireless Distributed Computing." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/33678.

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The idea of wireless distributed computing (WDC) is rapidly gaining recognition owing to its promising potential in military, public safety and commercial applications. This concept basically entails distributing a computationally intensive task that one radio device is assigned, among its neighboring peer radio devices. The added processing power of multiple radios can be harnessed to significantly reduce the time consumed in obtaining the results of the original complex task. Since the idea of wireless distributed computing depends on a radio device forming a network with its peers, it is

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Zen, Kartinah. "MAC protocol design considerations for efficient mobility in wireless sensor networks." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2010. https://ro.ecu.edu.au/theses/1869.

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Research in wireless sensor networks (WSNs) has evolved with advancements in low power devices technology during the last decade. The driving applications in WSNs are habitat and environmental monitoring. However, sensors can also be applied in smart homes, health monitoring, vehicles tracking, military, and fire detection. Since batterypowered sensors are intended to be left for months or years without human intervention, computational algorithms and communication protocols for WSNs focus more on energy conservation rather than throughput and delay as in other wireless networks. Recently, WSN

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Jin, Haipeng. "MAC protocol design and capacity study for space division multiple access systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3094620.

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7

SAYADI, Afef. "Medium access protocol (MAC) design for wireless multi-hop ad hoc and sensor networks." Phd thesis, Institut National des Télécommunications, 2013. http://tel.archives-ouvertes.fr/tel-00997665.

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Wireless multi-hop ad hoc and sensor networks provide a promising solution to ensure ubiquitous connectivity for the Future Internet. Good network connectivity requires designing a reliable Medium Access Control (MAC) protocol, which is a challenging task in the ad hoc and sensor environments. The broadcast and shared nature of the wireless channel renders the bandwidth resources limited and expose the transmissions to relatively high collisions and loss rates. The necessity to provide guaranteed Quality of Service (QoS) to the upper layers triggered the design of conflict-free MAC protocols.

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Sayadi, Afef. "Medium access protocol (MAC) design for wireless multi-hop ad hoc and sensor networks." Thesis, Evry, Institut national des télécommunications, 2013. http://www.theses.fr/2013TELE0002/document.

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Les réseaux sans fil multi-sauts ad hoc et les réseaux de capteurs présentent une solution prometteuse pour assurer une connectivité quasi-permanente dans l'Internet du Futur. Cette connectivité, néanmoins, nécessite la conception d'un protocole d'accès au canal radio fiable, ce qui défi les caractéristiques hostiles et instables des réseaux ad hoc et des réseaux de capteurs. Cet environnement, en effet, est caractérisé par la rareté des ressources radio disponibles, la perte de la bande passante due aux collisions et aux interférences. La nécessité de garantir une meilleure qualité de service

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Thommes, Richard (Richard Winfried) 1977. "Design of a MAC protocol for wavelength sharing in a passive optical distribution network." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87829.

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Al, Kiyumi Raja M. "Energy-aware MAC and routing protocol design for lifetime maximization in wireless sensor networks." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/846343/.

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WSN applications demand prolonged network operation in which manually replenishing the scarce battery resources of sensor nodes are not usually possible. When the limited energy of sensor nodes is completely exhausted, this leads to reduced coverage and may cause network partitioning, which dramatically reduces the network lifetime. In this respect, network lifetime enhancement is considered the most critical aspect of WSN performance. Prolonging network lifetime requires mechanisms that provide energy consumption balancing (ECB) in addition to energy efficiency (EE). This thesis investigates

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D, Rajaveerappa. "Design and Development of a Hybrid TDMA/CDMA MAC Protocol for Multimedia Wireless Networks." Thesis, Indian Institute of Science, 2004. https://etd.iisc.ac.in/handle/2005/89.

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A wireless local area network (WLAN) provides high bandwidth to users in a limited geographical area. This network faces certain challenges and constraints that are not imposed on their wired counterparts. They are: frequency allocation, interference and reliability, security, power consumption, human safety, mobility, connection to wired LAN,service area, handoff and roaming, dynamic configuration and the throughput. But the wireless medium relies heavily on the features of MAC protocol and the MAC protocol is the core of medium access control for WLANs. The available MAC protocols all have

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D, Rajaveerappa. "Design and Development of a Hybrid TDMA/CDMA MAC Protocol for Multimedia Wireless Networks." Thesis, Indian Institute of Science, 2004. http://hdl.handle.net/2005/89.

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A wireless local area network (WLAN) provides high bandwidth to users in a limited geographical area. This network faces certain challenges and constraints that are not imposed on their wired counterparts. They are: frequency allocation, interference and reliability, security, power consumption, human safety, mobility, connection to wired LAN,service area, handoff and roaming, dynamic configuration and the throughput. But the wireless medium relies heavily on the features of MAC protocol and the MAC protocol is the core of medium access control for WLANs. The available MAC protocols all have t

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Khanafer, Mounib. "Design of Efficient MAC Protocols for IEEE 802.15.4-based Wireless Sensor Networks." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22816.

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Wireless Sensor Networks (WSNs) have enticed a strong attention in the research community due to the broad range of applications and services they support. WSNs are composed of intelligent sensor nodes that have the capabilities to monitor different types of environmental phenomena or critical activities. Sensor nodes operate under stringent requirements of scarce power resources, limited storage capacities, limited processing capabilities, and hostile environmental surroundings. However, conserving sensor nodes’ power resources is the top priority requirement in the design of a WSN as it has

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Mühlberger, Clemens [Verfasser], Reiner [Gutachter] Kolla, and Jörg [Gutachter] Nolte. "Design of a Self-Organizing MAC Protocol for Dynamic Multi-Hop Topologies / Clemens Mühlberger ; Gutachter: Reiner Kolla, Jörg Nolte." Würzburg : Universität Würzburg, 2018. http://d-nb.info/1154686841/34.

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Pielli, Chiara. "Channel Access in Wireless Networks: Protocol Design of Energy-Aware Schemes for the IoT and Analysis of Existing Technologies." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3427305.

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The design of channel access policies has been an object of study since the deployment of the first wireless networks, as the Medium Access Control (MAC) layer is responsible for coordinating transmissions to a shared channel and plays a key role in the network performance. While the original target was the system throughput, over the years the focus switched to communication latency, Quality of Service (QoS) guarantees, energy consumption, spectrum efficiency, and any combination of such goals. The basic mechanisms to use a shared channel, such as ALOHA, TDMA- and FDMA-based policies, have b

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Chandramohan, Vijay. "Design and Performance Evaluation of a New Spatial Reuse FireWire Protocol." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000128.

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Bouraoui, Basma. "Architectures cross-layer PHY/MAC pour réduire l'effet de blocage de réception dans les réseaux véhiculaires ad-hoc." Thesis, Valenciennes, 2017. http://www.theses.fr/2017VALE0006/document.

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Le protocole MAC du standard IEEE 802.11p dédié aux réseaux véhiculaires interdit les transmissions simultanées dans une même zone de détection afin d’éviter d’éventuelles interférences entre les véhicules voisins. Cette interdiction entraîne un blocage temporaire de réception de données, ce qui diminue le débit global du réseau. Pour résoudre ce problème, nous proposons dans cette thèse une architecture cross-layer PHY/MAC basée sur un algorithme de sélection d’antennes émettrices et un protocole MAC dédié afin de réduire le blocage. Ce cross-layer permet au récepteur de choisir la meilleure

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Zatout, Youssouf. "Conception et évaluation de performances d'un réseau de capteurs sans fil hétérogène pour une application domotique." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2011. http://tel.archives-ouvertes.fr/tel-00632228.

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Les progrès technologiques permettent aujourd'hui l'intégration à bas coût d'objets multi-capteurs hétérogènes communicants sans fil notamment pour la surveillance dans les environnements considérés à risques ou non accessibles. Le but de ces travaux de thèse est de contribuer à la sécurisation des personnes et de leur environnement de vie par la mise en réseau de dispositifs multi-capteurs de mesures sans fil. Ceux-ci doivent être spécifiés et configurés pour rendre par exemple l'environnement qu'ils surveillent intelligent et sécurisé. Le travail effectué porte sur la conception et le protot

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Chin, Mao-Lun, and 秦茂倫. "Design of MAC Protocol for Smart Badge Systems." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/87527591221520969209.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>105<br>Smart Badge System is a low rate wireless personal area network (LR-WPAN). The system includes an access point (AP) and multiple smart badges. The data transmission methods include uneven transmission rates for download links (AP to badges) and upload links (badges to AP), which the download rate is much faster than the upload rate. Because existing MAC protocols do not suit the needs of the Smart Badge System,designing a new MAC protocol and frame format for the system is the main issue tackled in this thesis. Apart from the issue above, this thesis also con

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Chung, Chieh-Min, and 鍾傑民. "Design of Hybrid MAC Protocol for Smart Badge Systems." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/35f2yz.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>106<br>Smart Badge System is a Wireless Personal Area Network (WPAN). The system mainly consists of a base station and multiple smart badges. The data transmission direction include one base station transmit data to multiple smart badges or smart badges transmit data to one base station. The purpose of this thesis is to design a new MAC layer protocol to make the Smart Badge System operate properly. This MAC layer protocol includes some innovative transmission mechanism, algorithm, switch threshold, frame format, fairness of data transmission and Smart Badge lis

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"Design and performance analysis of MAC protocol for wireless LAN." 2005. http://library.cuhk.edu.hk/record=b5892630.

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Liu Haiping.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2005.<br>Includes bibliographical references (leaves 78-82).<br>Abstracts in English and Chinese.<br>Acknowledgments --- p.i<br>Abstract --- p.ii<br>Table of Contents --- p.vi<br>List of Figures --- p.vii<br>List of Tables --- p.ix<br>Chapter Chapter I --- Introduction to Wireless LAN --- p.1<br>Chapter 1.1 --- Wireless LAN Netwrok Architecture --- p.2<br>Chapter 1.2 --- IEEE 802.11 protocol family --- p.4<br>Chapter 1.3 --- The Major factors influencing the System Performance --- p.7<br>Chapter 1.4 --- Research Object

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Chuang, Tzu-Tsung, and 莊子宗. "Design And Implementation Of IEEE 802.16d MAC Protocol Using SDL." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/34839060351258749933.

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碩士<br>國立交通大學<br>電子工程系所<br>96<br>Specification and Description Language (SDL) is a formal object-oriented language for modeling real-time interactive systems. It reduces the design time through graphical representation and automatic translation of the SDL model into C model. For realizing a communication system, we utilize the design methodology using SDL to implement the IEEE 802.16d MAC protocol with base station. In this thesis, we define the BS architecture of IEEE 802.16d Medium Access Control (MAC) protocol and describe the reasons to modulize each function of the protocol. To verify the

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Chien-Jung, Chen, and 陳建榮. "The Design of MAC Protocol for Integrated-Service Microcellular Systems." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/06488698200043661366.

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碩士<br>國立臺灣科技大學<br>電子工程技術研究所<br>86<br>In microcellular systems, the number of frequency channels is finite, but the number of users increases rapidly. Therefore, it is very important to utilize frequency channels efficiently for system designers. In order to use the channel efficiently, users must make a reservation before they can use the channel. Very often, users will experience collisions during time slot reservation. The channel utilization will degrade when the number of collisions increases, therefore, in this thesis, we use the frequency hopping technology to solve the problem of collis

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Lu, Kuo-Hsiang, and 盧國翔. "Load Awareness Multi-Channel MAC Protocol Design for Ad Hoc Networks." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/98136317817758983034.

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碩士<br>國立臺灣海洋大學<br>資訊工程學系<br>96<br>Exploiting multiple channels improves the system performance in a heavy-loaded wireless ad hoc network. Many multi-channel MAC protocols have been proposed recently. The number of channels being used is fixed for these protocols, which limits their flexibility. As a result, these protocols may suffer from either longer delay in a light-loaded network or higher collision probability in a heavy-loaded one. In this thesis, we propose a Load Awareness Multi-channel MAC (LAMM) protocol which dynamically adjusts the number of channels being used according to the net

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張敬昇. "Design of Multiple Channel MAC Protocol with Quorum System in VANETs." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/09389928983930457537.

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碩士<br>國立清華大學<br>資訊工程學系<br>100<br>To improve throughput and reduce channel contention over inter-vehicle communication in vehicular ad-hoc networks (VANETs), wireless communication devices should effectively and efficiently utilize multiple channels dedicated to VANETs. To this end, we propose a multiple-channel MAC protocol which aims to fully and uniformly utilize all available channels in a random-access manner, considering the constraint that a device has only one or a small number of antennas (radio interfaces). In a wireless network where there are channels than radio interfaces on a devi

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Yu-HungLiu and 劉育宏. "The Directional MAC Protocol Design in mm-Wave Ad Hoc Network." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/92w544.

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碩士<br>國立成功大學<br>電腦與通信工程研究所<br>107<br>The stations that connect directly to each other increases the spatial reuse in wireless ad hoc network. However, the interference s and collision s between stations is an important issue . Hence, this thesis will focus on MAC /PHY layer design and the application of transmit power control. In this thesis, the MAC layer is based on 802.11 DCF protocol. First, t he several system performance indicators between different kinds RTS/CTS are t heoretically analyzed and simulated . And the simulation results show directional RTS/CTS is much better. However, the d

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Sahoo, Bishnu Prasad. "Adaptive MAC Protocol Design for Energy Efficient and Reliable WBAN Link." Thesis, 2015. http://ethesis.nitrkl.ac.in/7263/1/ADAPTIVE_Sahoo_2015.pdf.

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The present need for a well-organised and continuous health care service at an affordable price gives rise to a wireless health monitoring technology. Wireless body area network is an emerging field of a wireless sensor network that works in the vicinity of the human body. This technology has its most significant application in the modern healthcare system. This wban architecture is designed to get the health information and daily routine of human activity (both physical and psychological) through energy efficient and reliable radio transceivers connectivity these modern devices behave accord

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Chen, Tobias, and 陳泰旭. "Packet Flushing Transfer Mode for IEEE 802.11 MAC Protocol: Design and Analysis." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/29376843561014213122.

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碩士<br>淡江大學<br>電機工程學系<br>91<br>Recent years have witnessed a tremendous growth of research and development to provide mobile users with reliable and convenient communication through wireless media. This thesis deals with the improvement of the medium access protocol for mobile ad hoc networks. While most wireless MAC (medium access control) protocols have the ability to split oversized LLC (logic link control) data into multiple transmissions, none has the ability to send multiple LLC data frames within one physical layer frame. To add the missing functionality, we propose a mechanism that send

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Chang, Wei-Shang, and 張維升. "Design of MAC Protocol for QoS Guarantee QoS in a CDMA System." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/68238551606607934965.

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碩士<br>國立交通大學<br>電信工程系<br>87<br>For next-generation multi-services CDMA wireless system, CDMA has inherent capacity to control the quality-of-services (QoS) requirements by assigning different power levels to each traffic type. Toward this, optimum power control schemes have been investigated. The three components of QoS are bandwidth (rate), delay, and reliability. The delay aspect of QoS specification will not be discussed in the power controlled CDMA system. The delay issue has to be considered in connection with the definition of service class, call admission control schemes, and scheduling

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Mühlberger, Clemens. "Design of a Self-Organizing MAC Protocol for Dynamic Multi-Hop Topologies." Doctoral thesis, 2018. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-158788.

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Biologically inspired self-organization methods can help to manage the access control to the shared communication medium of Wireless Sensor Networks. One lightweight approach is the primitive of desynchronization, which relies on the periodic transmission of short control messages – similar to the periodical pulses of oscillators. This primitive of desynchronization has already been successfully implemented as MAC protocol for single-hop topologies. Moreover, there are also some concepts of such a protocol formulti-hop topologies available. However, the existing implementations may handle just

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Chen, Po-Tsun, and 陳柏村. "A MAC Protocol Design for Throughput Enhancement in Vehicular Ad Hoc Networks." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/58262645294633701093.

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碩士<br>國立交通大學<br>網路工程研究所<br>98<br>In vehicular network, roadsides units (RSUs) are usually placed along the road for Internet access. However, due to high speed of mobility, vehicles can only connect to RSUs in limited time. Besides, nowadays with quick development of entertainment applications, such as streaming TV and on-line games, these applications would require essential bandwidth to support Quality of Service (QoS). Hence, throughput is an important issue in vehicular networks. However, existing MAC protocol IEEE 802.11p still has a problem with deficiency of bandwidth in urban area, and

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Li, Pei-Sheng, and 李培聖. "Design and Performance Evaluation of the MAC Protocol for 802.11a Wireless LANS." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/93891373737665353870.

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碩士<br>中原大學<br>電機工程研究所<br>90<br>In this thesis, the performance of CSMA/CA is improved by a fuzzy logic control. The simulation results show that the fuzzy logic control can reduce PER (Packet Error Rate) and improve the performance. The fuzzy logic control unfair if the parameters are not properly chosen. We investigate the situation of fairness, and improve the fuzzy logic control further.

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Prejil, P. "Design of a Power Control MAC Protocol for Mobile Ad Hoc Networks." Thesis, 2011. http://ethesis.nitrkl.ac.in/2730/1/Thesis.pdf.

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Power conservation is a major issue in Mobile Ad Hoc networks, as most of the nodes are battery powered. Power control is not related to any particular layer, since we can apply power conservation methods in all layers. But most of the power control mechanisms are working in MAC layer. Here we designed a Power Control MAC protocol for MANET. Our first aim was to control the overall power consumption and the second was improve the throughput of the network. Thus our protocol includes two phases; in the first phase we reduce the power consumption and in the second phase we improve the aggrega

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Chaudhary, Jyoti. "Design of an Adaptive Energy Efficient MAC Protocol for Wireless Sensor Networks." Thesis, 2016. http://ethesis.nitrkl.ac.in/9315/1/2016_MT_JChaudhary.pdf.

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Energy conservation is the major concern in wireless sensor network as nodes are generally battery-powered. Sensor nodes consist of the radio which wastes energy. Wireless sensor network is generally deployed in remote areas to monitor physical and environmental conditions. MAC (Medium Access Control) layer is responsible for efficient and reliable communication in wireless sensor network and is described by MAC protocol, which ensures communication between two nodes without collisions. Traditional MAC protocols i.e., IEEE 802.11 MAC consumes more amount of energy as sensor nodes in the net

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Al-Tamimi, Majid. "MAC Protocol Design for Parallel Link Rendezvous in Ad Hoc Cognitive Radio Networks." Thesis, 2010. http://hdl.handle.net/10012/5006.

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The most significant challenge for next wireless generation is to work opportunistically on the spectrum without a fixed spectrum allocation. Cognitive Radio (CR) is the candidate technology to utilize spectrum white space, which requires the CR to change its operating channel as the white space moves. In a CR ad-hoc network, each node could tune to a different channel; as a result, it cannot communicate with other nodes. This different tuning is due to the difficulty of maintaining Common Control Channel (CCC) in opportunistic spectrum network, and keeping the nodes synchronized in ad-hoc net

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Huang, Terry, and 黃志遠. "Design a Modified MAC Protocol Suitable for WMNs to Increase the Network Throughput." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/86923395239025016968.

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碩士<br>南台科技大學<br>資訊管理系<br>96<br>A wireless mesh network（WMN）consists of mesh routers and mesh clients, where mesh routers have minimal mobility and form the backbone of WMN. A WMN is dynamically self-organized and self-configured, which the nodes in the network automatically establish and maintain the mesh connectivity among themselves. Therefore, the service coverage of this type of network is significantly increased. IEEE 802.11 CSMA/CA mechanism is originally designed for single-hop WLAN environment, not for wireless multi-hop networks. The throughput drops significantly as the number of hop

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Lin, Yu-Chieh, and 林祐頡. "A Receiver-initiated MAC Protocol with Packet Train Design for Underwater Acoustic Sensor Networks." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/91799056271067804893.

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碩士<br>大同大學<br>資訊經營學系(所)<br>100<br>Media access control (MAC) is one of the most important issues in wireless sensor networks. An efficient MAC protocol can reduce the collision and enhance the throughput of the wireless sensor networks. There are many MAC protocols that have been proposed for terrestrial wireless networks, and handshaking-base protocol is a good idea to solve the hidden-terminal and expose-terminal problems. However, these protocols cannot be applied directly in underwater acoustic sensor network (UASN). Due to the long propagation delay and the low data rate, too many transmi

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Lee, Tzu-Jung, and 利梓榮. "The Design of Distributed MAC and Routing Protocol in Multi-Channel Wireless Ad-Hoc Networks." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/00511819367551848675.

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碩士<br>國立成功大學<br>電腦與通信工程研究所<br>96<br>Such as IEEE 802.11, the Wimedia (MBOA) Draft allows for the use of multiple channels available at the physical layer, but its MAC protocol is designed only for a single channel. A single-channel MAC protocol does not work well in the previous multi-channel environment, because of the multi-channel hidden terminal problem. We propose a distributed MAC and Routing manner for gathering global networks topology and channels information by using Wimedia MAC in a multi-channel wireless Ad-Hoc networks. For coordination amongst nodes in different channels, a rende

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Chen, Hong-Jie, and 陳泓捷. "Design of LTE MAC layer protocol for fair coexistence between LTE-U and 802.11ac in LBT-required unlicensed band." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/89935831946574528202.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>103<br>The rapid traffic growth of LTE cellular network is expected to result in the shortage of licensed spectrum. To satisfy the tremendous traffic demand, more spectrum and widely spreading LTE small cells are required, especially in metropolitan area with high population density. A proposed concept of LTE-U is that enabling LTE to operate in unlicensed band in order to offloads data traffic from licensed band to shared access of unlicensed band. However, it raises the coexistence issue with WiFi, which is the major user of unlicensed band and holds almost a half

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Chen, Po-Jung, and 陳柏榮. "Design of a Low-Power and Low-Latency MAC Protocol with Nodes Grouping and Transmission Pipelining in Wireless Sensor Networks." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/76174556508246333086.

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碩士<br>逢甲大學<br>資訊工程所<br>95<br>In wireless sensor networks (WSNs), the strategies of periodical sleeping and contending for using the channel are efficient in power consumption and channel utilization. However, the situations of contention and sleep arise another power consumption problem of overhearing the controls packets and increasing transmission latency. In this paper, we propose the design of nodes grouping and transmission pipelining to improve the power consumption and transmission delay. In nodes grouping design, there are several groups in the WSNs and each sensor node is initially se

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Chetan, Kumar S. "Design And Development Of Modular System For QoS Guarantee In Wireless Networks." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/1191.

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Chetan, Kumar S. "Design And Development Of Modular System For QoS Guarantee In Wireless Networks." Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1191.

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Zhang, Ruonan. "Cross-layer protocol design and performance study for wideband wireless networks." Thesis, 2009. http://hdl.handle.net/1828/2118.

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This thesis presents a cross-layer design and optimization for emerging wideband wireless networks supporting multimedia applications, considering the interactions of the wireless channel characteristics, the physical and link layer protocols, and the user-perceived Quality-of-Service (QoS). As wireless channels are error-prone and broadcast in nature, both the error control mechanisms and the Media Access Control (MAC) protocols are critical for resource utilization and QoS provisioning. How to analyze, design and optimize the high-rate wireless networks by considering the characteristics of

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蔡宗翰. "Design and Implementation of Header Generation of Data Plane and TLV Encoding/Decoding of Control Plane based on Emulator Environment of IEEE 802.16 MAC Protocol." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/54515630936813707268.

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碩士<br>國立交通大學<br>電機學院IC設計產業專班<br>97<br>As the requirement for multimedia applications and high speed data rate transmission increases, the industry standards for high bandwidth and high speed data rate are also proposed one after one. The IEEE 802.16 is a series of standards of wireless broadband communication protocols. IEEE 802.16 mainly defines two aspects of the air interface: the PHY (Physical) layer and the MAC (Medium Access Control) layer. This thesis is based on a MAC protocol architecture of a 3-plane design basis. In data plane, a flow and a method of header generation are proposed

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Kiran, Rama. "Design and Analysis of Full-duplex Systems for Next-generation Wireless Communication Systems." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5249.

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To cater to the ever-growing demand for higher data rates, cellular networks and wireless local area networks (WLANs) need to adopt innovative technologies. Full-duplex (FD) is one such technology that promises to double the data rates by enabling simultaneous transmission and reception over the same frequency band. However, FD raises its own challenges. The first challenge is self-interference (SI) at the FD receivers due to power leakage from the collocated transmitter. Recent advances that employ techniques such as analog and digital domain signal cancellation and electromagnetic iso

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Zheng, Lei. "Design and Application of Wireless Machine-to-Machine (M2M) Networks." Thesis, 2014. http://hdl.handle.net/1828/5822.

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In the past decades, wireless Machine-to-Machine (M2M) networks have been developed in various industrial and public service areas and envisioned to improve our daily life in next decades, e.g., energy, manufacturing, transportation, healthcare, and safety. With the advantage of low cost, flexible deployment, and wide coverage as compared to wired communications, wireless communications play an essential role in providing information exchange among the distributed devices in wireless M2M networks. However, an intrinsic problem with wireless communications is that the limited radio spectrum res

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Vojini, Sumith Dev. "Reducing handoff latency in proxy mobile IPv6." Thesis, 2014. http://hdl.handle.net/1805/4449.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Mobile IP though allows mobility features to a node it suffers from signaling Latencies which are mainly incurred due to the fact that the MN itself is involved in the handover process. To overcome this problem proxy mobile IPv6(PMIPv6) was defined where the mobility signaling is taken care of by a proxy server while keeping track of the MN's movement. PMIPv6 has considerably reduced the handover latency but the demand for real time applications over the network has increased tremendously due to recent explosion of the cloud era. My

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