Optimization Methods For User Admissions And Radio Resource Allocation For Multicasting Over High Altitude Platforms
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Optimization Methods For User Admissions And Radio Resource Allocation For Multicasting Over High Altitude Platforms
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Author : Ibrahim, Ahmed
language : en
Publisher: River Publishers
Release Date : 2019-02-27
Optimization Methods For User Admissions And Radio Resource Allocation For Multicasting Over High Altitude Platforms written by Ibrahim, Ahmed and has been published by River Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-27 with Technology & Engineering categories.
This book focuses on the issue of optimizing radio resource allocation (RRA) and user admission control (AC) for multiple multicasting sessions on a single high altitude platform (HAP) with multiple antennas on-board. HAPs are quasi-stationary aerial platforms that carry a wireless communications payload to provide wireless communications and broadband services. They are meant to be located in the stratosphere layer of the atmosphere at altitudes in the range 17-22 km and have the ability to fly on demand to temporarily or permanently serve regions with unavailable telecommunications infrastructure. An important requirement that the book focusses on is the development of an efficient and effective method for resource allocation and user admissions for HAPs, especially when it comes to multicasting. Power, frequency, space (antennas selection) and time (scheduling) are the resources considered in the problem over an orthogonal frequency division multiple access (OFDMA) HAP system. Due to the strong dependence of the total number of users that could join different multicast groups, on the possible ways we may allocate resources to these groups, it is of significant importance to consider a joint user to session assignments and RRA across the groups. From the service provider's point of view, it would be in its best interest to be able to admit as many higher priority users as possible, while satisfying their quality of service requirements. High priority users could be users subscribed in and paying higher for a service plan that gives them preference of admittance to receive more multicast transmissions, compared to those paying for a lower service plan. Also, the user who tries to join multiple multicast groups (i.e. receive more than one multicast transmission), would have preferences for which one he would favor to receive if resources are not enough to satisfy the QoS requirements. Technical topics discussed in the book include: Overview on High Altitude Platforms, their different types and the recent works in this areaRadio Resource Allocation and User Admission Control in HAPsMulticasting in a Single HAP System: System Model and Mathematical FormulationOptimization schemes that are designed to enhance the performance of a branch and bound technique by taking into account special mathematical structure in the problem formulation
Optimization Methods For User Admissions And Radio Resource Allocation For Multicasting Over High Altitude Platforms
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Author : Ahmed Ibrahim
language : en
Publisher: CRC Press
Release Date : 2022-09-01
Optimization Methods For User Admissions And Radio Resource Allocation For Multicasting Over High Altitude Platforms written by Ahmed Ibrahim and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-01 with Medical categories.
This book focuses on the issue of optimizing radio resource allocation (RRA) and user admission control (AC) for multiple multicasting sessions on a single high altitude platform (HAP) with multiple antennas on-board. HAPs are quasi-stationary aerial platforms that carry a wireless communications payload to provide wireless communications and broadband services. They are meant to be located in the stratosphere layer of the atmosphere at altitudes in the range 17-22 km and have the ability to fly on demand to temporarily or permanently serve regions with unavailable telecommunications infrastructure. An important requirement that the book focusses on is the development of an efficient and effective method for resource allocation and user admissions for HAPs, especially when it comes to multicasting. Power, frequency, space (antennas selection) and time (scheduling) are the resources considered in the problem over an orthogonal frequency division multiple access (OFDMA) HAP system.Due to the strong dependence of the total number of users that could join different multicast groups, on the possible ways we may allocate resources to these groups, it is of significant importance to consider a joint user to session assignments and RRA across the groups. From the service provider's point of view, it would be in its best interest to be able to admit as many higher priority users as possible, while satisfying their quality of service requirements. High priority users could be users subscribed in and paying higher for a service plan that gives them preference of admittance to receive more multicast transmissions, compared to those paying for a lower service plan. Also, the user who tries to join multiple multicast groups (i.e. receive more than one multicast transmission), would have preferences for which one he would favor to receive if resources are not enough to satisfy the QoS requirements.Technical topics discussed in the book include: • Overview on High Altitude Platforms, their different types and the recent works in this area Radio Resource Allocation and User Admission Control in HAPs Multicasting in a Single HAP System: System Model and Mathematical Formulation Optimization schemes that are designed to enhance the performance of a branch and bound technique by taking into account special mathematical structure in the problem formulation
Admission Control And Radio Resource Allocation For Multicasting Over High Altitude Platforms
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Author : Ahmed Ibrahim
language : en
Publisher:
Release Date : 2016
Admission Control And Radio Resource Allocation For Multicasting Over High Altitude Platforms written by Ahmed Ibrahim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
In this thesis, optimization techniques for a joint admission control and radio resource allocation are developed for multicasting over high altitude platforms. First, a primary system model in a multicellular high altitude platform system is considered, in which each user can receive any requested multicast session in its cell from no more than only one HAP antenna simultaneously. All the users have equal priority for admission. The users are selected to join the respective multicast groups and the power, subchannels and time slots are allocated such that the spectrum utilization is maximized while satisfying the quality of service requirements. Lagrangian relaxation and the subgradient algorithm are used to obtain solution bounds for the primary system model problem formulation. These bounds were then used in the branch and bound algorithm for pruning of nodes. The numerical results illustrate the goodness of the bounds for different constraint set dualizations and for different subgradient step size rules. The system model is then extended to allow the multicast group users to receive a session's transmission from more than one antenna simultaneously at different frequencies. This also allows the user to receive multicast sessions transmitted in neighboring cells too, not just those transmitted in the cell which the user resides in. The users have different priority levels of admission and the objective is to maximize the admission of highest priority users to the system. A much efficient formulation is obtained for the extended model in terms of size, as compared to the primary model. Linear outer approximation using McCormick underestimators are used for the relaxation of the mixed binary quadratically constrained problem. The solution method is based on branch and cut scheme in which cutting planes, domain propagation and heuristics are integrated. Various branching schemes are considered and a presolving reformulation linearization scheme for a specific set of quadratic constraints is considered. The numerical experiments compare the performances in terms of the duality gap, number of nodes, number of iterations, the number of iterations per node, the time needed to obtain the first feasible solution and the percentage of instances a feasible solution was found.
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards
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Author :
language : en
Publisher:
Release Date : 2006
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Dissertations, Academic categories.
Journal Of Communications And Networks
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Author :
language : en
Publisher:
Release Date : 2006
Journal Of Communications And Networks written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Computer networks categories.
Queueing Theory For Telecommunications
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Author : Attahiru Sule Alfa
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-07-28
Queueing Theory For Telecommunications written by Attahiru Sule Alfa and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-28 with Computers categories.
Queueing theory applications can be discovered in many walks of life including; transportation, manufacturing, telecommunications, computer systems and more. However, the most prevalent applications of queueing theory are in the telecommunications field. Queueing Theory for Telecommunications: Discrete Time Modelling of a Single Node System focuses on discrete time modeling and illustrates that most queueing systems encountered in real life can be set up as a Markov chain. This feature is very unique because the models are set in such a way that matrix-analytic methods are used to analyze them. Queueing Theory for Telecommunications: Discrete Time Modelling of a Single Node System is the most relevant book available on queueing models designed for applications to telecommunications. This book presents clear concise theories behind how to model and analyze key single node queues in discrete time using special tools that were presented in the second chapter. The text also delves into the types of single node queues that are very frequently encountered in telecommunication systems modeling, and provides simple methods for analyzing them. Where appropriate, alternative analysis methods are also presented. This book is for advanced-level students and researchers concentrating on engineering, computer science and mathematics as a secondary text or reference book. Professionals who work in the related industries of telecommunications, industrial engineering and communications engineering will find this book useful as well.
Personal Wireless Communications
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Author : Robert Bestak
language : en
Publisher: Springer
Release Date : 2007-11-14
Personal Wireless Communications written by Robert Bestak and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-14 with Technology & Engineering categories.
The international conference Personal Wireless Communications (PWC 2007) was the twelfth conference of its series aimed at stimulating technical exchange between researchers, practitioners and students interested in mobile computing and wireless networks. On behalf of the International Advisory Committee, it is our great pleasure to welcome you to the proceedings of the 2007 event. Wireless communication faces dramatic changes. The wireless networks are expanding rapidly in subscribers, capability, coverage, and applications, and costs continue to decrease. Mobile devices are becoming ubiquitous with greatly expanded computing power and memory, improved displays, and wireless lo cal and personal area connectivity. The PWC 2007 program covered a variety of research topics that are of current interest, starting with Ad~Hoc Networks, WiMAX, Heterogeneous Networks, Wireless Networking, QoS and Security, Sen sor Networks, Multicast and Signal processing. This year we enriched PWC with a poster session covering diversity topics related to wireless networks (e.g., fil ters, current conveyors, etc.). We would like to thank the International Advisory Committee members and the referees. Without their support, the program organization of this conference would not have been possible. We are also indebted to many individuals and organizations that made this conference possible (Czech Technical University, IFIP, ESTEC). In particular, we thank the members of the Organizing Commit tee for their help in all aspects of the organization of this conference.
Recent Advances In Modeling And Simulation Tools For Communication Networks And Services
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Author : Nejat Ince
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-09-20
Recent Advances In Modeling And Simulation Tools For Communication Networks And Services written by Nejat Ince and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-20 with Computers categories.
The papers which appear in this book were presented by their authors at a Symposium hosted by the Centre for Communication System Research, University of Surrey, Guildford, United Kingdom, on 28-29 March 2007. The Symposium was organized under the aegis of COST Action 285: Modeling and Simulation Tools for Research in Emerging Multi-Service Telecommunications The Symposium focused specifically on recent advances in modeling and simulation methods, techniques, and tools for communications networks and services. COST – the acronym for European COoperation in the field of Scientific and Technical research – is the oldest and most broadly focused European inter-governmental vehicle for cooperative research. COST was established by the Ministerial Conference in November 1971, and is presently used by the scientific communities of 35 European nations to cooperate in common research projects supported by national funds. Hence, COST is a framework for scientific and technical cooperation, supporting the coordination of national research at the European level. COST’s goal is to ensure that Europe holds a strong position in all fields of scientific and technical research by increasing cooperation and interaction among participating nations. COST Actions are cooperative networks that focus on specific basic and pre-competitive research issues, as well as on activities of public interest. Actions are apportioned among fourteen key scientific domains such as social sciences, natural sciences, information technologies, and engineering. COST Action 285 is one of 22 Actions in the Information and Commu- cation Technologies domain.
5g Nr
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Author : Sassan Ahmadi
language : en
Publisher:
Release Date : 2019
5g Nr written by Sassan Ahmadi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Broadband communication systems categories.
5G NR: Architecture, Technology, Implementation, and Operation of 3GPP New Radio Standards is an in-depth, systematic, technical reference on 3GPP's New Radio standards (Release 15 and beyond), covering the underlying theory, functional descriptions, practical considerations and implementation of the 5G new radio access technology. The book describes the design and operation of individual components and shows how they are integrated into the overall system and operate from a systems perspective. Uniquely, this book gives detailed information on RAN protocol layers, transport, network architecture and services, as well as practical implementation and deployment issues, making it suitable for researchers and engineers who are designing and developing 5G systems. Reflecting on the author's 30 plus years of experience in signal processing, microelectronics and wireless communication system design, this book is ideal for professional engineers, researchers and graduate students working and researching in cellular communication systems and protocols as well as mobile broadband wireless standards. Strong focus on practical considerations, implementation and deployment issues Takes a top-down approach to explain system operation and functional interconnection Covers all functional components, features, and interfaces based on clear protocol structure and block diagrams Describes RF and transceiver design considerations in sub-6 GHz and mmWave bands Covers network slicing, SDN/NFV/MEC networks and cloud and virtualized RAN architectures Comprehensive coverage of NR multi-antenna techniques and beamformed operation A consistent and integrated coverage reflecting the author's decades of experience in developing 3G, 4G and 5G technologies and writing two successful books in these areas.
Resource Allocation Techniques For High Altitude Platforms
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Author :
language : en
Publisher:
Release Date : 2005
Resource Allocation Techniques For High Altitude Platforms written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.