Optimization Of Routing And Wireless Resource Allocation In Hybrid Data Center Networks

Download Optimization Of Routing And Wireless Resource Allocation In Hybrid Data Center Networks full books in PDF, epub, and Kindle. Read online Optimization Of Routing And Wireless Resource Allocation In Hybrid Data Center Networks ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Optimization of Routing and Wireless Resource Allocation in Hybrid Data Center Networks

Download Optimization of Routing and Wireless Resource Allocation in Hybrid Data Center Networks PDF Online Free

Author : Boutheina Dab
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (12 download)

Book Synopsis Optimization of Routing and Wireless Resource Allocation in Hybrid Data Center Networks by : Boutheina Dab

Download or read book Optimization of Routing and Wireless Resource Allocation in Hybrid Data Center Networks written by Boutheina Dab and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high proliferation of smart devices and online services allows billions of users to connect with network while deploying a vast range of applications. Particularly, with the advent of the future 5G technology, it is expected that a tremendous mobile and data traffic will be crossing Internet network. In this regard, Cloud service providers are urged to rethink their data center architectures in order to cope with this unprecedented traffic explosion. Unfortunately, the conventional wired infrastructures struggle to resist to such a traffic growth and become prone to serious congestion problems. Therefore, new innovative techniques are required. In this thesis, we investigate a recent promising approach that augments the wired Data Center Network (DCN) with wireless communications. Indeed, motivated by the feasibility of the new emerging 60 GHz technology, offering an impressive data rate (≈ 7 Gbps), we envision, a Hybrid (wireless/wired) DCN (HDCN) architecture. Our HDCN is based on i) Cisco's Massively Scalable Data Center (MSDC) model and ii) IEEE 802.11ad standard. Servers in the HDCN are regrouped into racks, where each rack is equipped with a: i) Ethernet top-of-rack (ToR) switch and ii) set of wireless antennas. Our research aims to optimize the routing and the allocation of wireless resources for inter-rack communications in HDCN while enhancing network performance and minimizing congestion. The problem of routing and resource allocation in HDCN is NP-hard. To deal with this difficulty, we will tackle the problem into three stages. In the first stage, we consider only one-hop inter-rack communications in HDCN, where all communicating racks are in the same transmission range. We will propound a new wireless channel allocation approach in HDCN to hardness both wireless and wired interfaces for incoming flows while enhancing network throughput. In the second stage, we deal with the multi-hop communications in HDCN where communicating racks can not communicate in one single-hop wireless path. We propose a new approach to jointly route and allocate channels for each single communication flow, in an online way. Finally, in the third stage, we address the batched arrival of inter-rack communications to the HDCN so as to further optimize the usage of wireless and wired resources. For that end, we propose: i) a heuristic-based and ii) an approximate, solutions, to solve the joint batch routing and channel assignment. Based on extensive simulations conducted in QualNet simulator while considering the full protocol stack, the obtained results for both real workload and uniform traces, show that our proposals outperform the prominent related strategies.

Management of Data Center Networks

Download Management of Data Center Networks PDF Online Free

Author : Nadjib Aitsaadi
Publisher : John Wiley & Sons
ISBN 13 : 1119647428
Total Pages : 162 pages
Book Rating : 4.1/5 (196 download)

Book Synopsis Management of Data Center Networks by : Nadjib Aitsaadi

Download or read book Management of Data Center Networks written by Nadjib Aitsaadi and published by John Wiley & Sons. This book was released on 2021-05-11 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: MANAGEMENT OF DATA CENTER NETWORKS Discover state-of-the-art developments in DCNs from leading international voices in the field In Management of Data Center Networks, accomplished researcher and editor Dr. Nadjib Aitsaadi delivers a rigorous and insightful exploration of the network management challenges that present within intra- and inter-data center networks, including reliability, routing, and security. The book also discusses new architectures found in data center networks that aim to minimize the complexity of network management while maximizing Quality of Service, like Wireless/Wired DCNs, server-only DCNs, and more. As DCNs become increasingly popular with the spread of cloud computing and multimedia social networks employing new transmission technologies like 5G wireless and wireless fiber, the editor provides readers with chapters written by world-leading authors on topics like routing, the reliability of inter-data center networks, energy management, and security. The book also offers: A thorough overview of the architectures of data center networks, including the classification of switch-centric, server-centric, enhanced, optical, and wireless DCN architectures An exploration of resource management in wired and wireless data center networks, including routing and wireless channel allocation and assignment challenges and criteria Practical discussions of inter-data center networks, including an overview of basic virtual network embedding Examinations of energy and security management in data center networks Perfect for academic and industrial researchers studying the optimization of data center networks, Management of Data Center Networks is also an indispensable guide for anyone seeking a one-stop resource on the architectures, protocols, security, and tools required to effectively manage data centers.

Management of Data Center Networks

Download Management of Data Center Networks PDF Online Free

Author : Nadjib Aitsaadi
Publisher : John Wiley & Sons
ISBN 13 : 1119647479
Total Pages : 162 pages
Book Rating : 4.1/5 (196 download)

Book Synopsis Management of Data Center Networks by : Nadjib Aitsaadi

Download or read book Management of Data Center Networks written by Nadjib Aitsaadi and published by John Wiley & Sons. This book was released on 2021-04-28 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: MANAGEMENT OF DATA CENTER NETWORKS Discover state-of-the-art developments in DCNs from leading international voices in the field In Management of Data Center Networks, accomplished researcher and editor Dr. Nadjib Aitsaadi delivers a rigorous and insightful exploration of the network management challenges that present within intra- and inter-data center networks, including reliability, routing, and security. The book also discusses new architectures found in data center networks that aim to minimize the complexity of network management while maximizing Quality of Service, like Wireless/Wired DCNs, server-only DCNs, and more. As DCNs become increasingly popular with the spread of cloud computing and multimedia social networks employing new transmission technologies like 5G wireless and wireless fiber, the editor provides readers with chapters written by world-leading authors on topics like routing, the reliability of inter-data center networks, energy management, and security. The book also offers: A thorough overview of the architectures of data center networks, including the classification of switch-centric, server-centric, enhanced, optical, and wireless DCN architectures An exploration of resource management in wired and wireless data center networks, including routing and wireless channel allocation and assignment challenges and criteria Practical discussions of inter-data center networks, including an overview of basic virtual network embedding Examinations of energy and security management in data center networks Perfect for academic and industrial researchers studying the optimization of data center networks, Management of Data Center Networks is also an indispensable guide for anyone seeking a one-stop resource on the architectures, protocols, security, and tools required to effectively manage data centers.

Resource Management for Heterogeneous Wireless Networks

Download Resource Management for Heterogeneous Wireless Networks PDF Online Free

Author : Amila Tharaperiya Gamage
Publisher : Springer
ISBN 13 : 3319642685
Total Pages : 116 pages
Book Rating : 4.3/5 (196 download)

Book Synopsis Resource Management for Heterogeneous Wireless Networks by : Amila Tharaperiya Gamage

Download or read book Resource Management for Heterogeneous Wireless Networks written by Amila Tharaperiya Gamage and published by Springer. This book was released on 2017-08-18 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth discussion on how to efficiently manage resources of heterogeneous wireless networks and how to design resource allocation algorithms to suit real world conditions. Efficiently managing resources of the networks is more crucial now, than ever before, to meet users’ rapidly increasing demand for higher data rates, better quality-of-service (QoS) and seamless coverage. Some of the techniques that can be incorporated within heterogeneous wireless networks to achieve this objective are interworking of the networks, user multi-homing and device-to-device (D2D) communication. Designing resource allocation algorithms to suit real world conditions is also important, as the algorithms should be deployable and perform well in real networks. For example, two of the conditions considered in this book are resource allocation intervals of different networks are different and small cell base stations have limited computational capacity. To address the first condition, resource allocation algorithms for interworking systems are designed to allocate resources of different networks at different time-scales. To address the second condition, resource allocation algorithms are designed to be able to run at cloud computing servers. More of such conditions, algorithms designed to suit these conditions, modeling techniques for various networks and performance analysis of the algorithms are discussed in the book. This book concludes with a discussion on the future research directions on the related fields of study. Advanced-level students focused on communication and networking will use this book as a study guide. Researchers and experts in the fields of networking, converged networks, small-cell networks, resource management, and interference management, as well as consultants working in network planning and optimization and managers, executives and network architects working in the networking industry will also find this book useful as a reference.

Resource Allocation and Cross-layer Control in Wireless Networks

Download Resource Allocation and Cross-layer Control in Wireless Networks PDF Online Free

Author : Leonidas Georgiadis
Publisher : Now Publishers Inc
ISBN 13 : 1933019263
Total Pages : 161 pages
Book Rating : 4.9/5 (33 download)

Book Synopsis Resource Allocation and Cross-layer Control in Wireless Networks by : Leonidas Georgiadis

Download or read book Resource Allocation and Cross-layer Control in Wireless Networks written by Leonidas Georgiadis and published by Now Publishers Inc. This book was released on 2006 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information flow in a telecommunication network is accomplished through the interaction of mechanisms at various design layers with the end goal of supporting the information exchange needs of the applications. In wireless networks in particular, the different layers interact in a nontrivial manner in order to support information transfer. In this text we will present abstract models that capture the cross-layer interaction from the physical to transport layer in wireless network architectures including cellular, ad-hoc and sensor networks as well as hybrid wireless-wireline. The model allows for arbitrary network topologies as well as traffic forwarding modes, including datagrams and virtual circuits. Furthermore the time varying nature of a wireless network, due either to fading channels or to changing connectivity due to mobility, is adequately captured in our model to allow for state dependent network control policies. Quantitative performance measures that capture the quality of service requirements in these systems depending on the supported applications are discussed, including throughput maximization, energy consumption minimization, rate utility function maximization as well as general performance functionals. Cross-layer control algorithms with optimal or suboptimal performance with respect to the above measures are presented and analyzed. A detailed exposition of the related analysis and design techniques is provided.

Fundamentals of Resource Allocation in Wireless Networks

Download Fundamentals of Resource Allocation in Wireless Networks PDF Online Free

Author : Slawomir Stanczak
Publisher : Springer Science & Business Media
ISBN 13 : 3540793860
Total Pages : 445 pages
Book Rating : 4.5/5 (47 download)

Book Synopsis Fundamentals of Resource Allocation in Wireless Networks by : Slawomir Stanczak

Download or read book Fundamentals of Resource Allocation in Wireless Networks written by Slawomir Stanczak and published by Springer Science & Business Media. This book was released on 2009-06-29 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide tools for a better understanding of the fundamental tradeo?s and interdependencies in wireless networks, with the goal of designing resource allocation strategies that exploit these int- dependencies to achieve signi?cant performance gains. Two facts prompted us to write it: First, future wireless applications will require a fundamental understanding of the design principles and control mechanisms in wireless networks. Second, the complexity of the network problems simply precludes the use of engineering common sense alone to identify good solutions, and so mathematics becomes the key avenue to cope with central technical problems in the design of wireless networks. In this book, two ?elds of mathematics play a central role: Perron-Frobenius theory for non-negative matrices and optimization theory. This book is a revised and expanded version of the research monograph “Resource Allocation in Wireless Networks” that was published as Lecture Notes in Computer Sciences (LNCS 4000) in 2006. Although the general structure has remained unchanged to a large extent, the book contains - merous additional results and more detailed discussion. For instance, there is a more extensive treatment of general nonnegative matrices and interf- ence functions that are described by an axiomatic model. Additional material on max-min fairness, proportional fairness, utility-based power control with QoS (quality of service) support and stochastic power control has been added.

Robust Resource Allocation in Future Wireless Networks

Download Robust Resource Allocation in Future Wireless Networks PDF Online Free

Author : Saeedeh Parsaeefard
Publisher : Springer
ISBN 13 : 3319503898
Total Pages : 255 pages
Book Rating : 4.3/5 (195 download)

Book Synopsis Robust Resource Allocation in Future Wireless Networks by : Saeedeh Parsaeefard

Download or read book Robust Resource Allocation in Future Wireless Networks written by Saeedeh Parsaeefard and published by Springer. This book was released on 2017-03-06 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art research on robust resource allocation in current and future wireless networks. The authors describe the nominal resource allocation problems in wireless networks and explain why introducing robustness in such networks is desirable. Then, depending on the objectives of the problem, namely maximizing the social utility or the per-user utility, cooperative or competitive approaches are explained and their corresponding robust problems are considered in detail. For each approach, the costs and benefits of robust schemes are discussed and the algorithms for reducing their costs and improving their benefits are presented. Considering the fact that such problems are inherently non-convex and intractable, a taxonomy of different relaxation techniques is presented, and applications of such techniques are shown via several examples throughout the book. Finally, the authors argue that resource allocation continues to be an important issue in future wireless networks, and propose specific problems for future research.

Exploring Wireless Data Center Networks

Download Exploring Wireless Data Center Networks PDF Online Free

Author : Sayed Ashraf Mamun
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (125 download)

Book Synopsis Exploring Wireless Data Center Networks by : Sayed Ashraf Mamun

Download or read book Exploring Wireless Data Center Networks written by Sayed Ashraf Mamun and published by . This book was released on 2021 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Data centers have become the digital backbone of the modern world. To support the growing demands on bandwidth, Data Centers consume an increasing amount of power. A significant portion of that power is consumed by information technology (IT) equipment, including servers and networking components. Additionally, the complex cabling in traditional data centers poses design and maintenance challenges and increases the energy cost of the cooling infrastructure by obstructing the flow of chilled air. Hence, to reduce the power consumption of the data centers, we proposed a wireless server-to-server data center network architecture using millimeter-wave links to eliminate the need for power-hungry switching fabric of traditional fat-tree-based data center networks. The server-to-server wireless data center network (S2S-WiDCN) architecture requires Line-of-Sight (LoS) between servers to establish direct communication links. However, in the presence of interference from internal or external sources, or an obstruction, such as an IT technician, the LoS may be blocked. To address this issue, we also propose a novel obstruction-aware adaptive routing algorithm for S2S-WiDCN. S2S-WiDCN can reduce the power consumption of the data center network portion while not affecting the power consumption of the servers in the data center, which contributes significantly towards the total power consumption of the data center. Moreover, servers in data centers are almost always underutilized due to over-provisioning, which contributes heavily toward the high-power consumption of the data centers. To address the high power consumption of the servers, we proposed a network-aware bandwidth-constrained server consolidation algorithm called Network-Aware Server Consolidation (NASCon) for wireless data centers that can reduce the power consumption up to 37% while improving the network performance. However, due to the arrival of new tasks and the completion of existing tasks, the consolidated utilization profile of servers change, which may have an adverse effect on overall power consumption over time. To overcome this, NASCon algorithm needs to be executed periodically. We have proposed a mathematical model to estimate the optimal inter-consolidation time, which can be used by the data center resource management unit for scheduling NASCon consolidation operation in real-time and leverage the benefits of server consolidation. However, in any data center environment ensuring security is one of the highest design priorities. Hence, for S2S-WiDCN to become a practical and viable solution for data center network design, the security of the network has to be ensured. S2S-WiDCN data center can be vulnerable to a variety of different attacks as it uses wireless links over an unguided channel for communication. As being a wireless system, the network has to be secured against common threats associated with any wireless networks such as eavesdropping attack, denial of services attack, and jamming attack. In parallel, other security threats such as the attack on the control plane, side-channel attack through traffic analysis are also possible. We have done an extensive study to elaborate the scope of these attacks as well as explore probable solutions against these issues. We also proposed viable solutions for the attack against eavesdropping, denial of services, jamming, and control-plane attack. To address the traffic analysis attack, we proposed a simulated annealing-based random routing mechanism which can be adopted instead of default routing in the wireless data center."--Abstract.

Optimal Resource Allocation and Routing in Wireless Networks

Download Optimal Resource Allocation and Routing in Wireless Networks PDF Online Free

Author : Christopher G. Lott
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Optimal Resource Allocation and Routing in Wireless Networks by : Christopher G. Lott

Download or read book Optimal Resource Allocation and Routing in Wireless Networks written by Christopher G. Lott and published by . This book was released on 2001 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Radio Resource Allocation for Multi-hop Wireless Networks Using Cross-layer Optimization

Download Radio Resource Allocation for Multi-hop Wireless Networks Using Cross-layer Optimization PDF Online Free

Author : Jennifer Catherine Fang
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (318 download)

Book Synopsis Radio Resource Allocation for Multi-hop Wireless Networks Using Cross-layer Optimization by : Jennifer Catherine Fang

Download or read book Radio Resource Allocation for Multi-hop Wireless Networks Using Cross-layer Optimization written by Jennifer Catherine Fang and published by . This book was released on 2005 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Optimization for Resource-constrained Wireless Networks

Download Optimization for Resource-constrained Wireless Networks PDF Online Free

Author : Fang, Xi
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (861 download)

Book Synopsis Optimization for Resource-constrained Wireless Networks by : Fang, Xi

Download or read book Optimization for Resource-constrained Wireless Networks written by Fang, Xi and published by . This book was released on 2013 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, wireless communications and networks have been widely used in our daily lives. One of the most important topics related to networking research is using optimization tools to improve the utilization of network resources. In this dissertation, we concentrate on optimization for resource-constrained wireless networks, and study two fundamental resource-allocation problems: 1) distributed routing optimization and 2) anypath routing optimization. The study on the distributed routing optimization problem is composed of two main thrusts, targeted at understanding distributed routing and resource optimization for multihop wireless networks. The first thrust is dedicated to understanding the impact of full-duplex transmission on wireless network resource optimization. We propose two provably good distributed algorithms to optimize the resources in a full-duplex wireless network. We prove their optimality and also provide network status analysis using dual space information. The second thrust is dedicated to understanding the influence of network entity load constraints on network resource allocation and routing computation. We propose a provably good distributed algorithm to allocate wireless resources. In addition, we propose a new subgradient optimization framework, which can provide findgrained convergence, optimality, and dual space information at each iteration. This framework can provide a useful theoretical foundation for many networking optimization problems. The study on the anypath routing optimization problem is composed of two main thrusts. The first thrust is dedicated to understanding the computational complexity of multi-constrained anypath routing and designing approximate solutions. We prove that this problem is NP-hard when the number of constraints is larger than one. We present two polynomial time K-approximation algorithms. One is a centralized algorithm while the other one is a distributed algorithm. For the second thrust, we study directional anypath routing and present a cross-layer design of MAC and routing. For the MAC layer, we present a directional anycast MAC. For the routing layer, we propose two polynomial time routing algorithms to compute directional anypaths based on two antenna models, and prove their ptimality based on the packet delivery ratio metric.

Chukofu

Download Chukofu PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (784 download)

Book Synopsis Chukofu by :

Download or read book Chukofu written by and published by . This book was released on with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Resource Allocation and Performance Optimization in Wireless Networks

Download Resource Allocation and Performance Optimization in Wireless Networks PDF Online Free

Author : Wenxuan Guo
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.:/5 (828 download)

Book Synopsis Resource Allocation and Performance Optimization in Wireless Networks by : Wenxuan Guo

Download or read book Resource Allocation and Performance Optimization in Wireless Networks written by Wenxuan Guo and published by . This book was released on 2011 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: As wireless networks continue streaking through more aspects of our lives, it is seriously constrained by limited network resources, in terms of time, frequency and power. In order to enhance performance for wireless networks, it is of great importance to allocate resources smartly based on the current network scenarios. The focus of this dissertation is to investigate radio resource management algorithms to optimize performance for different types of wireless networks. Firstly, we investigate a joint optimization problem on relay node placement and route assignment for wireless sensor networks. A heuristic binary integer programming algorithm is proposed to maximize the total number of information packets received at the base station during the network lifetime. We then present an optimization algorithm based on binary integer programming for relay node assignment with the current node locations. Subsequently, a heuristic algorithm is applied to move the relay nodes to the locations iteratively to better serve their associated edge nodes. Secondly, as traditional goal of maximizing the total throughput can result in unbalanced use of network resources, we study a joint problem of power control and channel assignment within a wireless mesh network such that the minimal capacity of all links is maximized. This is essentially a fairness problem. We develop an upper bound for the objective by relaxing the integer variables and linearization. Subsequently, we put forward a heuristic approach to approximate the optimal solution, which tries to increase the minimal capacity of all links via setting tighter constraint and solving a binary integer programming problem. Simulation results show that solutions obtained by this algorithm are very close to the upper bounds obtained via relaxation, thus suggesting that the solution produced by the algorithm is near-optimal. Thirdly, we study the topology control of disaster area wireless networks to facilitate mobile nodes communications by deploying a minimum number of relay nodes dynamically. We first put forward a novel mobility model for mobile nodes that describes the movement of first responders within a large disaster area. Secondly, we formulate the square disk cover problem and propose three algorithms to solve it, including the two-vertex square covering algorithm, the circle covering algorithm and the binary integer programming algorithm. Fourthly, we explore the joint problem of power control and channel assignment to maximize cognitive radio network throughput. It is assumed that an overlaid cognitive radio network (CRN) co-exists with a primary network. We model the opportunistic spectrum access for cognitive radio network and formulate the cross-layer optimization problem under the interference constraints imposed by the existing primary network. A distributed greedy algorithm is proposed to seek for larger network throughput. Cross-layer optimization for CRN is often implemented in centralized manner to avoid co-channel interference. The distributed algorithm coordinates the channel assignment with local channel usage information. Thus the computation complexity is greatly reduced. Finally, we study the network throughput optimization problem for a multi-hop wireless network by considering interference alignment at physical layer. We first transform the problem of dividing a set of links into multiple maximal concurrent link sets to the problem of finding the maximal cliques of a graph. Then each concurrent link set is further divided into one or several interference channel networks, on which interference alignment is implemented to guarantee simultaneous transmission. The network throughput optimization problem is then formulated as a non-convex nonlinear programming problem, which is NP-hard generally. Thus we resort to developing a branch-and-bound framework, which guarantees an achievable performance bound.

Resource Allocation in Wireless Networks

Download Resource Allocation in Wireless Networks PDF Online Free

Author : Slawomir Stanczak
Publisher : Springer
ISBN 13 : 354046249X
Total Pages : 200 pages
Book Rating : 4.5/5 (44 download)

Book Synopsis Resource Allocation in Wireless Networks by : Slawomir Stanczak

Download or read book Resource Allocation in Wireless Networks written by Slawomir Stanczak and published by Springer. This book was released on 2006-11-22 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resource Allocation in Wireless Networks demonstrates that emerging applications and directions require fundamental understanding on how to design and control wireless networks that lie far beyond what the currently existing theory can provide. It is shown that mathematics is the key technology to cope with central technical problems in their design. The book provides the tools for better understanding the fundamental tradeoffs in wireless networks.

Resource Allocation Optimization in Future Wireless Networks

Download Resource Allocation Optimization in Future Wireless Networks PDF Online Free

Author : Sepehr Rezvani
Publisher :
ISBN 13 : 9783844091731
Total Pages : 0 pages
Book Rating : 4.0/5 (917 download)

Book Synopsis Resource Allocation Optimization in Future Wireless Networks by : Sepehr Rezvani

Download or read book Resource Allocation Optimization in Future Wireless Networks written by Sepehr Rezvani and published by . This book was released on 2023-08-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Resource Allocation in Relay Enhanced Broadband Wireless Access Networks

Download Resource Allocation in Relay Enhanced Broadband Wireless Access Networks PDF Online Free

Author : Preetha Thulasiraman
Publisher :
ISBN 13 :
Total Pages : 137 pages
Book Rating : 4.:/5 (827 download)

Book Synopsis Resource Allocation in Relay Enhanced Broadband Wireless Access Networks by : Preetha Thulasiraman

Download or read book Resource Allocation in Relay Enhanced Broadband Wireless Access Networks written by Preetha Thulasiraman and published by . This book was released on 2010 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of relay nodes to improve the performance of broadband wireless access (BWA) networks has been the subject of intense research activities in recent years. Relay enhanced BWA networks are anticipated to support multimedia traffic (i.e., voice, video, and data traffic). In order to guarantee service to network users, efficient resource distribution is imperative. Wireless multihop networks are characterized by two inherent dynamic characteristics: 1) the existence of wireless interference and 2) mobility of user nodes. Both mobility and interference greatly influence the ability of users to obtain the necessary resources for service. In this dissertation we conduct a comprehensive research study on the topic of resource allocation in the presence of interference and mobility. Specifically, this dissertation investigates the impact interference and mobility have on various aspects of resource allocation, ranging from fairness to spectrum utilization. We study four important resource allocation algorithms for relay enhanced BWA networks. The problems and our research achievements are briefly outlined as follows. First, we propose an interference aware rate adaptive subcarrier and power allocation algorithm using maximum multicommodity flow optimization. We consider the impact of the wireless interference constraints using Signal to Interference Noise Ratio (SINR). We exploit spatial reuse to allocate subcarriers in the network and show that an intelligent reuse of resources can improve throughput while mitigating the impact of interference. We provide a sub-optimal heuristic to solve the rate adaptive resource allocation problem. We demonstrate that aggressive spatial reuse and fine tuned-interference modeling garner advantages in terms of throughput, end-to-end delay and power distribution. Second, we investigate the benefits of decoupled optimization of interference aware routing and scheduling using SINR and spatial reuse to improve the overall achievable throughput. We model the routing optimization problem as a linear program using maximum concurrent flows. We develop an optimization formulation to schedule the link traffic such that interference is mitigated and time slots are reused appropriately based on spatial TDMA (STDMA). The scheduling problem is shown to be NP-hard and is solved using the column generation technique. We compare our formulations to conventional counterparts in the literature and show that our approach guarantees higher throughput by mitigating the effect of interference effectively. Third, we investigate the problem of multipath flow routing and fair bandwidth allocation under interference constraints for multihop wireless networks. We first develop a novel isotonic routing metric, RI3M, considering the influence of interflow and intraflow interference. Second, in order to ensure QoS, an interference-aware max-min fair bandwidth allocation algorithm, LMX:M3F, is proposed where the lexicographically largest bandwidth allocation vector is found among all optimal allocation vectors while considering constraints of interference on the flows. We compare with various interference based routing metrics and interference aware bandwidth allocation algorithms established in the literature to show that RI3M and LMX:M3F succeed in improving network performance in terms of delay, packet loss ratio and bandwidth usage. Lastly, we develop a user mobility prediction model using the Hidden Markov Model(HMM) in which prediction control is transferred to the various fixed relay nodes in the network. Given the HMM prediction model, we develop a routing protocol which uses the location information of the mobile user to determine the interference level on links in its surrounding neighborhood. We use SINR as the routing metric to calculate the interference on a specific link (link cost). We minimize the total cost of routing as a cost function of SINR while guaranteeing that the load on each link does not exceed its capacity. The routing protocol is formulated and solved as a minimum cost flow optimization problem. We compare our SINR based routing algorithm with conventional counterparts in the literature and show that our algorithm reinforces routing paths with high link quality and low latency, therefore improving overall system throughput. The research solutions obtained in this dissertation improve the service reliability and QoS assurance of emerging BWA networks.

Resource Allocation and Routing in Multi-hop Wireless Networks

Download Resource Allocation and Routing in Multi-hop Wireless Networks PDF Online Free

Author : Yong Ding (Graduate of Michigan State University)
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.3/5 (129 download)

Book Synopsis Resource Allocation and Routing in Multi-hop Wireless Networks by : Yong Ding (Graduate of Michigan State University)

Download or read book Resource Allocation and Routing in Multi-hop Wireless Networks written by Yong Ding (Graduate of Michigan State University) and published by . This book was released on 2010 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: