Interference Management And Resource Allocation In Heterogeneous Wireless Networks
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Interference Management And Resource Allocation In Heterogeneous Wireless Networks
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Author : Ahmed Ragab Elsherif
language : en
Publisher:
Release Date : 2014
Interference Management And Resource Allocation In Heterogeneous Wireless Networks written by Ahmed Ragab Elsherif and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Recent studies have shown that a large percentage of cellular voice and data traffic originate from indoor usage. The concept of heterogeneous networks (HetNets) consisting of traditional macrocells and newly envisioned small cells has been proposed to solve the indoor coverage problem and to offload some traffic from traditional macrocells. The heterogeneity in HetNets refers mainly tocoverage where, unlike macrocells, small cells are low power short range base stations that can be deployed by network operators or end users. The main challenge of the deployment of HetNets is theinter- and intra-tier interference when sharing the same spectrum. In this work, we study HetNet deployments in various scenarios and propose several algorithms for interference management and resource allocation in those scenarios. In the first part of the dissertation, we study HetNets operating in licensed cellular band. We study the two popular deployment scenarios of public/home femtocells and enterprise femtocells. For public/home femtocells, the main challenge we study is the inter-tier interference between femtocell base station (FBS) and macrocell user equipment (MUE) in downlink. We propose a spatial domain approach for interference management through MIMO precoding and develop three time-frequency domain approaches for interference management through resource allocation. The main theme of our work is to exploit the already-available feedback information in existing cellular systems for interference management and resource allocation in HetNets. On the other hand, in enterprise femtocell deployments such as shopping malls, stadiums, or corporate premises, the major challenge is intra-tier interference among femtocells. For enterprise environments, we present a partially centralized architecture for interference management among femtocells through graph coloring followed by local resource allocation for HUEs associated with each femtocell with consideration of fairness. Next, we present the concept of dual-access-technology small cells with both licensed and unlicensed band interfaces which represents another dimension of heterogeneity that can be thought of as vertical heterogeneity. The use of dual-access-technology small cells is motivated by the widespread WiFi hotspots and the common inclusion of WiFi interface in most cellular user terminals. For dual-access-technology small cells, we study public/home small cells as well as enterprise femtocells. We formulate an optimization problem that jointly allocates resources over both licensed and unlicensed bands with the goal of maximizing sum rate of small cell user equipments with fairness constraints together with controlling inter- or intra-tier interference to neighboring macrocell or femtocell users, respectively. An important feature that our proposed solution furtherconsiders is the Quality of Service (QoS) requirements of different users traffic types to be distributed over licensed and/or unlicensed bands.
Resource Management For Heterogeneous Wireless Networks
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Author : Amila Tharaperiya Gamage
language : en
Publisher: Springer
Release Date : 2017-08-18
Resource Management For Heterogeneous Wireless Networks written by Amila Tharaperiya Gamage and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-18 with Technology & Engineering categories.
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.
Interference And Resource Management In Heterogeneous Wireless Networks
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Author : Jiandong Li
language : en
Publisher: Artech House
Release Date : 2017-11-30
Interference And Resource Management In Heterogeneous Wireless Networks written by Jiandong Li and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-30 with Technology & Engineering categories.
This authoritative resource offers a comprehensive overview of heterogeneous wireless networks, small cells, and device-to-device (D2D) communications. The book provides insight into network modeling and performance analysis of heterogeneous wireless networks. Interference management framework and design issues are covered as well as details about resource mobility, channel models, and typical and statistical interference modeling. This resource explains leveraging resource heterogeneity in interference mitigation and presents the challenges and feasible solutions for concurrent transmission. Moreover, complete coverage of interference alignment in MIMO heterogeneous networks for both downlink and uplink is presented. This book provides performance results for an ideal partially connected interference network as well as a practical heterogeneous network. Readers find practical guidance for LTE and LTE-Advanced as well as 5G in this resource. New techniques and designs for heterogeneous wireless networks are included.
Resource Allocation For Heterogeneous Wireless Networks
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Author : Amila Pradeep Kumara Tharaperiya Gamage
language : en
Publisher:
Release Date : 2015
Resource Allocation For Heterogeneous Wireless Networks written by Amila Pradeep Kumara Tharaperiya Gamage and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Heterogeneous computing categories.
Demand for high volumes of mobile data traffic with better quality-of-service (QoS) support and seamless network coverage is ever increasing, due to growth of the number of smart mobile devices and the applications that run on these devices. Also, most of these high volumes of data traffic demanding areas are covered by heterogeneous wireless networks, such as cellular networks and wireless local area networks (WLANs). Therefore, interworking mechanisms can be used in these areas to enhance the network capacity, QoS support and coverage. Interworking enhances network capacity and QoS support by jointly allocating resources of multiple networks and enabling user multi-homing, where multi-homing allows users to simultaneously communicate over multiple networks. It widens network coverage by merging coverage of individual networks. However, there are areas where interworking cannot improve network capacity or QoS support, such as the areas with coverage of only one networks. Therefore, to achieve network-wide uniform capacity and QoS support enhancements, interworking can be integrated with device-to-device (D2D) communication and small cell deployment techniques. One of the challenging issues that need to be solved before these techniques can be applied in practical networks is the efficient resource allocation, as it has a direct impact on the network capacity and QoS support. Therefore, this thesis focuses on studying and developing efficient resource allocation schemes for interworking heterogeneous wireless networks which apply D2D communication and small cell deployment techniques. First, uplink resource allocation for cellular network and WLAN interworking to provide multi-homing voice and data services is investigated. The main technical challenge, which makes the resource allocation for this system complicated, is that resource allocation decisions need to be made capturing multiple physical layer (PHY) and medium access control layer (MAC) technologies of the two networks. This is essential to ensure that the decisions are feasible and can be executed at the lower layers. Thus, the resource allocation problem is formulated based on PHY and MAC technologies of the two networks. The optimal resource allocation problem is a multiple time-scale Markov decision process (MMDP) as the two networks operate at different time-scales, and due to voice and data service requirements. A resource allocation scheme consisting of decision policies for the upper and the lower levels of the MMDP is derived. To reduce the time complexity, a heuristic resource allocation algorithm is also proposed. Second, resource allocation for D2D communication underlaying cellular network and WLAN interworking is investigated. Enabling D2D communication within the interworking system further enhances the spectrum efficiency, especially at areas where only one network is available. In addition to the technical challenges encountered in the first interworking system, interference management and selection of users' communication modes for multiple networks to maximize hop and reuse gains complicate resource allocation for this system. To address these challenges, a semi-distributed resource allocation scheme that performs mode selection, allocation of WLAN resources, and allocation of cellular network resources in three different time-scales is proposed. Third, resource allocation for interworking macrocell and hyper-dense small cell networks is studied. Such system is particularly useful for interference prone and high capacity demanding areas, such as busy streets and city centers, as it uses license frequency bands and provides a high spectrum efficiency through frequency reuse and bringing network closer to the users. The key challenge for allocating resources for this system is high complexity of the resource allocation scheme due to requirement to jointly allocate resources for a large number of small cells to manage co-channel interference (CCI) in the system. Further, the resource allocation scheme should minimize the computational burden for low-cost small cell base stations (BSs), be able to adapt to time-varying network load conditions, and reduce signaling overhead in the small cell backhauls with limited capacity. To this end, a resource allocation scheme which operates on two time-scales and utilizes cloud computing to determine resource allocation decisions is proposed. Resource allocation decisions are made at the cloud in a slow time-scale, and are further optimized at the BSs in a fast time-scale in order to adapt the decisions to fast varying wireless channel conditions. Achievable throughput and QoS improvements using the proposed resource allocation schemes for all three systems are demonstrated via simulation results. In summary, designing of the proposed resource allocation schemes provides valuable insights on how to efficiently allocate resources considering PHY and MAC technologies of the heterogeneous wireless networks, and how to utilize cloud computing to assist executing a complex resource allocation scheme. Furthermore, it also demonstrates how to operate a resource allocation scheme over multiple time-scales. This is particularly important if the scheme is complex and requires a long time to execute, yet the resource allocation decisions are needed to be made within a short interval.
Cognitive Interference Management In Heterogeneous Networks
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Author : Dania Marabissi
language : en
Publisher: Springer
Release Date : 2015-06-24
Cognitive Interference Management In Heterogeneous Networks written by Dania Marabissi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-24 with Technology & Engineering categories.
This brief investigates the role of interference management in Heterogeneous Networks (Het Nets), focusing on cognitive approaches and the use of beamforming. Key concepts of Het Nets are introduced and different deployment strategies are examined, such as sharing the same frequency band of the macro cells or using new high frequency bands. Particular attention is devoted to co-channel deployment and to the problem of interference management, addressing various strategies that can be adopted to handle the interference between the cells. In addition, the brief explores cognitive small cells which are able to avoid or limit interference by using suitable beamforming and resource allocation schemes. The suggested solutions are supported by numerical results in terms of performance evaluations and comparisons.
Interference Mitigation And Energy Management In 5g Heterogeneous Cellular Networks
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Author : Yang, Chungang
language : en
Publisher: IGI Global
Release Date : 2016-11-22
Interference Mitigation And Energy Management In 5g Heterogeneous Cellular Networks written by Yang, Chungang and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-22 with Technology & Engineering categories.
In recent years, wireless networks have become more ubiquitous and integrated into everyday life. As such, it is increasingly imperative to research new methods to boost cost-effectiveness for spectrum and energy efficiency. Interference Mitigation and Energy Management in 5G Heterogeneous Cellular Networks is a pivotal reference source for the latest research on emerging network architectures and mitigation technology to enhance cellular network performance and dependency. Featuring extensive coverage across a range of relevant perspectives and topics, such as interference alignment, resource allocation, and high-speed mobile environments, this book is ideally designed for engineers, professionals, practitioners, upper-level students, and academics seeking current research on interference and energy management for 5G heterogeneous cellular networks.
Architectures Of Small Cell Networks And Interference Management
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Author : Duy Trong Ngo
language : en
Publisher: Springer
Release Date : 2014-07-08
Architectures Of Small Cell Networks And Interference Management written by Duy Trong Ngo and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-08 with Computers categories.
This Springer Brief presents the architectures of small-cell networks and recent advances in interference management. The key challenges and values of small cells are first introduced, followed by the reviews of various small-cell architectures and interference management techniques in both heterogeneous CDMA and heterogeneous OFDMA small-cell networks. New adaptive power control and dynamic spectrum access techniques are discussed to promote a harmonized coexistence of diverse network entities in both 3G and 4G small-cell networks. Analytically devised from optimization and game theories, autonomous solutions are shown to effectively manage the intra-tier and cross-tier interferences in small cells. Informative and practical, this Springer Brief is designed for researchers and professionals working in networking and resource management. The content is also valuable for advanced-level students interested in network communications and power allocation.
Resource Allocation In Next Generation Broadband Wireless Access Networks
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Author : Singhal, Chetna
language : en
Publisher: IGI Global
Release Date : 2017-02-14
Resource Allocation In Next Generation Broadband Wireless Access Networks written by Singhal, Chetna and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-14 with Computers categories.
With the growing popularity of wireless networks in recent years, the need to increase network capacity and efficiency has become more prominent in society. This has led to the development and implementation of heterogeneous networks. Resource Allocation in Next-Generation Broadband Wireless Access Networks is a comprehensive reference source for the latest scholarly research on upcoming 5G technologies for next generation mobile networks, examining the various features, solutions, and challenges associated with such advances. Highlighting relevant coverage across topics such as energy efficiency, user support, and adaptive multimedia services, this book is ideally designed for academics, professionals, graduate students, and professionals interested in novel research for wireless innovations.
Heterogeneous Cellular Networks
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Author : Rose Qingyang Hu
language : en
Publisher: John Wiley & Sons
Release Date : 2013-04-03
Heterogeneous Cellular Networks written by Rose Qingyang Hu and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-03 with Technology & Engineering categories.
A timely publication providing coverage of radio resource management, mobility management and standardization in heterogeneous cellular networks The topic of heterogeneous cellular networks has gained momentum in industry and the research community, attracting the attention of standardization bodies such as 3GPP LTE and IEEE 802.16j, whose objectives are looking into increasing the capacity and coverage of the cellular networks. This book focuses on recent progresses, covering the related topics including scenarios of heterogeneous network deployment, interference management in the heterogeneous network deployment, carrier aggregation in a heterogeneous network, cognitive radio, cell selection/reselection and load balancing, mobility and handover management, capacity and coverage optimization for heterogeneous networks, traffic management and congestion control. This book enables readers to better understand the technical details and performance gains that are made possible by this state-of-the-art technology. It contains the information necessary for researchers and engineers wishing to build and deploy highly efficient wireless networks themselves. To enhance this practical understanding, the book is structured to systematically lead the reader through a series of case-studies of real world scenarios. Key features: Presents this new paradigm in cellular network domain: a heterogeneous network containing network nodes with different characteristics such as transmission power and RF coverage area Provides a clear approach by containing tables, illustrations, industry case studies, tutorials and examples to cover the related topics Includes new research results and state-of-the-art technological developments and implementation issues
Cognitive Resource Management For Heterogeneous Cellular Networks
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Author : Yongkang Liu
language : en
Publisher: Springer
Release Date : 2014-05-07
Cognitive Resource Management For Heterogeneous Cellular Networks written by Yongkang Liu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-07 with Computers categories.
This Springer Brief focuses on cognitive resource management in heterogeneous cellular networks (Het Net) with small cell deployment for the LTE-Advanced system. It introduces the Het Net features, presents practical approaches using cognitive radio technology in accommodating small cell data relay and optimizing resource allocation and examines the effectiveness of resource management among small cells given limited coordination bandwidth and wireless channel uncertainty. The authors introduce different network characteristics of small cell, investigate the mesh of small cell access points in parallel with macrocells in network control and resource management and address resource management in the backhaul with coordination constraints and wireless channel uncertainty. The final section of this brief summarizes and provides future research directions for this topic, including a proposed framework that has been evaluated through realistic simulations. Cognitive Resource Management for Heterogeneous Cellular Networks is designed for researchers and professionals working in wireless communications and networks. Advanced-level students studying electrical and computer engineering should also find the content helpful.