A Framework for Cross-Layer QoS-Aware Radio Resource Management in Mobile WiMAX Systems
Item
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Title
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A Framework for Cross-Layer QoS-Aware Radio Resource Management in Mobile WiMAX Systems
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Identifier
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d_2009_2013:881f65ba1942:11428
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identifier
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11695
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Creator
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Shahwan, Ihsan,
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Contributor
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Mohamed A. Ali
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Date
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2012
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Language
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English
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Publisher
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City University of New York.
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Subject
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Electrical engineering | Computer engineering | 4G Networks | Ihsan | LTE | Shahwan | WiMAX
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Abstract
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The growing demand for mobile Internet and advanced wireless multimedia services and applications has accelerated the development and deployment of new broadband wireless access technologies including fourth-generation (4G) mobile WiMAX and cellular Long-Term Evolution (LTE). These emerging technologies are capable of delivering speeds comparable to or better than current fixed-line broadband access systems - up to 100 Mb/s peak shared throughput. In this thesis, mobile WiMAX is chosen as representative candidate for 4G technology. WiMAX (Worldwide Interoperability for Microwave Access) is a rapidly growing broadband wireless access (BWA) technology based on IEEE 802.16 suite of standards. WiMAX is generally available in two versions: fixed and mobile. Fixed WiMAX, which is based on the IEEE 802.16-2004 standard, is ideally suited for delivering wireless, last-mile access for fixed broadband services.;Mobile WiMAX, which is based on the IEEE 802.16-2005 standard, supports both fixed and mobile applications while offering users improved performance, capacity, and mobility. The Mobile WiMAX air interface supports several new key features that distinguish it from other metropolitan area wireless access technologies including utilizing Orthogonal Frequency Division Multiple Access (OFDMA) as the radio access solution to mitigate the effects of multipath fading, the use of multiple-input multiple-output (MIMO) antenna techniques, and the support of several adaptive modulation and coding schemes (MCSs) such as Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK) and Quadrature Amplitude Modulation (QAM). Radio Resource Management (RRM) techniques such as Admission Control (AC), Packet Scheduler (PS), Dynamic Bandwidth Allocation (DBA), and subcarrier allocation and mapping (SAM), are essential for supporting differentiated and guaranteed Quality of Service (QoS) as well as to ensure that scarce radio resources are efficiently utilized in wireless networks. Though the Mobile WiMAX standard provides the preliminary specifications for RRM techniques including QoS requirements and signaling mechanisms, however, the algorithms/schemes that manage the radio resources including AC, PS, DBA, and SAM, are not the subject of standardization. These are still open research topics and are left for vendor implementation. The emerging 4G IP-based multimedia services and applications require efficient RRM schemes that can collectively support prioritization, high throughput, fairness, and, above all, ensure reliable end-to-end differentiated QoS delivery. Most of the RRM algorithms reported in the literature to date, however, fall short of providing a comprehensive and scalable RRM framework that enables carrier-class QoS support for both the existing and emerging wide range of multimedia services and applications required by the 4Gmobile users. Consequently, new generations of RRM techniques that can holistically address all of these concerns are required. This is the focus of this thesis.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Engineering
