Download or read book Virtualization enabled Adaptive Routing for QoS aware Software Defined Networks written by Alba Xifra Porxas and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [ANGLÈS] Software-Defined Networking (SDN) has been recognized as the next-generation networking paradigm. It is a fast-evolving technology that decouples the network data plane, which are the network devices that forward traffic, from the network control plane, which is the software logic that controls ultimately how traffic is forwarded through the network. A logically centralized controller is responsible for all the control decisions and communication among the forwarding elements. It allows to control the network behavior from a single high level control program. However, Software-Defined Networks use many of its network resources inefficiently, which leads to over-loading network links, congestion in the queues and end-to-end packet delays. Consequently, it becomes clear that routing decisions affect the overall performance of a communication's network. Performance is determined in terms of Quality of Service guarantees, i.e. throughput, average packet delay, jitter and losses. Thus, a QoS-aware routing algorithm is required. Current traffic engineering techniques and state-of-the-art routing algorithms do not effectively use the merits of SDNs, such as global centralized visibility, real-time fast decisions, control and data plane decoupling, network management simplification and portability. In this thesis, we developed two new QoS-aware routing algorithms that exploit the advantages that SDN brings to improve the network performance. Two different scenarios have been studied: a centralized and a distributed models. The centralized scenario simplifies the management of complex flows and the customization, but scalability issues arise. In contrast, the distributed scenario is more scalable, but there may be state inconsistency and increase of shared information. In general, a centralized approach is better for data centers or home networks, whereas a distributed approach is better for large scale networks, e.g. cloud environments. First, the centralized SDN controller model is discussed, for which a multi-tenancy management framework is proposed to fulfill the quality-of-services (QoSs) requirements through tenant isolation, prioritization and flow allocation. A network virtualization algorithm is provided to isolate and prioritize tenants from different clients. Furthermore, a novel routing scheme, called QoS-aware Virtualization-enabled Routing (QVR), is presented. It combines the proposed virtualization technique and a QoS-aware framework to enable flow allocation with respect to different tenant applications. Simulation results confirm that the proposed QVR algorithm surpasses the conventional algorithms with less traffic congestion and packet delay. This facilitates reliable and efficient data transportation in generalized SDNs. Therefore, it yields to service performance improvement for numerous applications and enhancement of client isolation. Second, a distributed SDN controller model is analyzed. The network is divided into different clusters, and hierarchically split in two levels. This architecture leads to smaller sizes of routing tables in the switches, and substantially lesser calculations and updates of routing tables from the controller. Moreover, a new algorithm is developed, called QoS-aware Reinforcement Learning Routing (QRLR), where reinforcement learning is applied to the routing problem. The modeling of the reward function calculation solution allows the customization of the different requirements for each type of traffic, thus providing flexibility and adaptability to different flows and its requirements.

Download or read book QoS Aware Virtual Network Embedding written by Chunxiao Jiang and published by Springer Nature. This book was released on 2022-01-01 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an important future network architecture, virtual network architecture has received extensive attention. Virtual network embedding (VNE) is one of the core services of network virtualization (NV). It provides solutions for various network applications from the perspective of virtual network resource allocation. The Internet aims to provide global users with comprehensive coverage. The network function requests of hundreds of millions of end users have brought great pressure to the underlying network architecture. VNE algorithm can provide effective support for the reasonable and efficient allocation of network resources, so as to alleviate the pressure off the Internet. At present, a distinctive feature of the Internet environment is that the quality of service (QoS) requirements of users are differentiated. Different regions, different times, and different users have different network function requirements. Therefore, network resources need to be reasonably allocated according to users' QoS requirements to avoid the waste of network resources. In this book, based on the analysis of the principle of VNE algorithm, we provide a VNE scheme for users with differentiated QoS requirements. We summarize the common user requirements into four categories: security awareness, service awareness, energy awareness, and load balance, and then introduce the specific implementation methods of various differentiated QoS algorithms. This book provides a variety of VNE solutions, including VNE algorithms for single physical domain, VNE algorithms for across multiple physical domains, VNE algorithms based on heuristic method, and VNE algorithms based on machine learning method.

Download or read book Safe QoS Aware Deep Reinforcement Learning Based Intelligent Routing for Software Defined Networks written by 吳祥勛 and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QoS Aware Deep Reinforcement Learning Based Intelligent Routing for Software Defined Networks Supporting Multi Applications written by Chih-Ling Liu and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adaptive Routing Using SDN and NFV written by Tejas Balkrishna Parab and published by . This book was released on 2017 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent times, the primary focus of every ISP is to deliver high quality of service for multimedia applications. Due to ever-increasing network traffic, it is challenging for ISPs to accomplish optimal network conditions. To achieve high-quality services implementation of network monitoring and QoS routing algorithm is inevitable. Also, several modifications occur while network planning especially in managing physical devices to host network services required to achieve QoS routing. Dynamic routing in physical network hardware is not suitable for cost effective business models. Therefore, to lower operational and capital expenditure, we propose a technique called adaptive routing managed with the support of SDN (Software Defined Networking and NFV (Network Function Virtualization). We introduce an economical routing model which will assist in meeting the demands of the consumers and at the same time provide significant savings in product cost and usability. To perform adaptive routing, we designed a topology in a virtualized environment. We programmed RINA (Recursive InterNetwork Architecture) for SDN management which acts as a steady northbound API. To implement NFV, we hosted Intrusion detection service(IDS) as a Virtual Network Function (VNF). We created two scenarios where we execute shortest path routing and adaptive routing. To compare these different routing scenarios, we ran a client-server DASH (Dynamic Adaptive Streaming over HTTP) application. Furthermore, we injected Iperf traffic into the network categorized as unwanted traffic. Lastly, we performed adaptive routing applying control theoretic technique with the help of SDN and NFV. By comparing two routing scenarios, we observed a notable difference in throughput for DASH application.

Download or read book Adaptive QoS aware Resource Allocation for Wireless Networks written by Calin Curescu and published by . This book was released on 2003 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Adaptive Approach to Optimizing QoS Throughputs in Software defined Networks written by J. M. Boley and published by . This book was released on 2017 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximizing bandwidth availability to critical science data flows is a key strategy in guaranteeing that current infrastructure can keep pace with the increasing demands of distributed science workflows across multiple facilities. Much of the research in this area has gone into developing parallel file transfer protocols such as GridFTP and leveraging circuit-based reservation systems like ESnets OSCARS. Software Defined Networks (SDN) is a recent development that presents a programmable approach to networking that moves routing logic out of the network fabric and abstracts the physical network behind a unified API. While SDN has gained significant traction in the data center, its potential is just beginning to garner attention in the scientific computing space and much investigation has yet to be done. In this study we examine an adaptive, priority-driven algorithm that leverages SDN capabilities to monitor flows, enforce per-application bandwidth guarantees and reallocate unutilized bandwidth between virtual circuits in real time. Trials were conducted on a simplified, six-switch topology with a single bottleneck link to demonstrate the correct behavior of the algorithm and compare it to competing traffic management techniques. We show that by intelligently adjusting throughput limits---effectively loaning out bandwidth from flows that are under-utilizing reserved bandwidth to flows that can make better use of the extra bandwidth---more optimal throughputs can be achieved for priority applications at a minimal cost to total bandwidth usage compared to such classic policing schemes as Differentiated Services queues.

Download or read book QoS aware Joint Power and Subchannel Allocation Algorithms for Wireless Network Virtualization written by Junyi Wei and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QoS aware Resource Provisioning in Virtualized Wireless Networks written by Vikas Jumba and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Wireless virtualization is emerging as a promising paradigm to tackle the issues of spectrum-crisis and network ossification via enabling common shared substrate of wireless resources among service providers, commonly referred as slices. Due to random nature of wireless channels and limited resources, virtualized wireless network (VWN) requires an efficient resource provisioning policy to operate. The objective of this thesis is to study and propose quality-of-service-aware (QoS-aware) resource provisioning policies applicable to VWNs.The first part of the thesis focuses on the design of resource provisioning policies to satisfy instantaneous requirements (e.g., minimum reserved rates and resources) of slices and minimize the VWN outage due to infeasibility. At first, an optimal algorithm for resource provisioning is developed to simultaneously satisfy the rate and resource (power and sub-carriers) based requirements of two groups of slices. Afterwards, to deal with the issue of infeasibility in VWNs due to limited wireless resources, an admission control policy is proposed. In this context, an optimal admission control algorithm is developed to dynamically adjust the requirements of slices according to channel state information (CSI) and priorities of slices. Finally, to further improve the feasibility region, a joint power, sub-carrier and antenna allocation algorithm is developed for VWN with massive multiple input multiple output (MIMO) setup, where a base station (BS), equipped with large number of antennas, serves users belonging to different slices.The second part of the thesis focuses on more realistic design of VWNs. Specifically, the issues of random, bursty traffic arrival in users' queue, energy-efficiency and uncertain CSI at the BS, often experienced in practice, are addressed through resource provisioning policies. At first, to improve end-user service experience, cross-layer resource provisioning policies are presented. In this context, a dynamic resource provisioning policy, adaptable to both CSI and queue state information (QSI) of VWNs, is proposed to maintain the stable queue state of VWN. Afterwards, to minimize energy consumption, a resource provisioning policy is proposed to satisfy the maximum average packet transmission delay in VWNs to offer reliable end-users' experience. Finally, the issue of uncertain CSI at the BS due to estimation errors is addressed through an energy-efficient robust resource provisioning policy. The total energy consumption of VWN is easily controllable via the cost factors of slices in the proposed policy. Simulations are performed to deeply analyze the effects of system parameters on VWN's performance." --

Download or read book Multimedia Streaming in SDN NFV and 5G Networks written by Alcardo Barakabitze and published by John Wiley & Sons. This book was released on 2022-12-06 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multimedia Streaming in SDN/NFV and 5G Networks A comprehensive overview of Quality of Experience control and management of multimedia services in future networks In Multimedia Streaming in SDN/NFV and 5G Networks, renowned researchers deliver a high-level exploration of Quality of Experience (QoE) control and management solutions for multimedia services in future softwarized and virtualized 5G networks. The book offers coverage of network softwarization and virtualization technologies, including SDN, NFV, MEC, and Fog/Cloud Computing, as critical elements for the management of multimedia services in future networks, like 5G and 6G networks and beyond. Providing a fulsome examination of end-to-end QoE control and management solutions in softwarized and virtualized networks, the book concludes with discussions of probable future challenges and research directions in emerging multimedia services and applications, 5G network management and orchestration, network slicing and collaborative service management of multimedia services in softwarized networks, and QoE-oriented business models. The distinguished authors also explore: Thorough introductions to 5G networks, including definitions and requirements, as well as Quality of Experience management of multimedia streaming services Comprehensive explorations of multimedia streaming services over the internet and network softwarization and virtualization in future networks Practical discussions of QoE management using SDN and NFV in future networks, as well as QoE management of multimedia services in emerging architectures, including MEC, ICN, and Fog/Cloud Computing In-depth examinations of QoE in emerging applications, 5G network slicing architectures and implementations, and 5G network slicing orchestration and resource management Perfect for researchers and engineers in multimedia services and telecoms, Multimedia Streaming in SDN/NFV and 5G Networks will also earn a place in the libraries of graduate and senior undergraduate students with interests in computer science, communication engineering, and telecommunication systems.

Download or read book Autonomous Control for a Reliable Internet of Services written by Ivan Ganchev and published by Springer. This book was released on 2018-05-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book was prepared as a Final Publication of the COST Action IC1304 “Autonomous Control for a Reliable Internet of Services (ACROSS)”. The book contains 14 chapters and constitutes a show-case of the main outcome of the Action in line with its scientific goals. It will serve as a valuable reference for undergraduate and post-graduate students, educators, faculty members, researchers, engineers, and research strategists working in this field. The explosive growth of the Internet has fundamentally changed the global society. The emergence of concepts like SOA, SaaS, PaaS, IaaS, NaaS, and Cloud Computing in general has catalyzed the migration from the information-oriented Internet into an Internet of Services (IoS). This has opened up virtually unbounded possibilities for the creation of new and innovative services that facilitate business processes and improve the quality of life. However, this also calls for new approaches to ensuring the quality and reliability of these services. The objective of this book is, by applying a systematic approach, to assess the state-of-the-art and consolidate the main research results achieved in this area.

Download or read book 6G Enabled Fog Computing in IoT written by Mohit Kumar and published by Springer Nature. This book was released on 2023-10-21 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years, the demand for data traffic has experienced explosive growth thanks to the increasing need to stay online. New applications of communications, such as wearable devices, autonomous systems, drones, and the Internet of Things (IoT), continue to emerge and generate even more data traffic with vastly different performance requirements. With the COVID-19 pandemic, the need to stay online has become even more crucial, as most of the fields, would they be industrial, educational, economic, or service-oriented, had to go online as best as they can. As the data traffic is expected to continuously strain the capacity of future communication networks, these networks need to evolve consistently in order to keep up with the growth of data traffic. Thus, more intelligent processing, operation, and optimization will be needed for tomorrow’s communication networks. The Sixth Generation (6G) technology is latest approach for mobile systems or edge devices in terms of reduce traffic congestions, energy consumption blending with IoT devices applications. The 6G network works beyond the 5G (B5G), where we can use various platforms as an application e.g. fog computing enabled IoT networks, Intelligent techniques for SDN network, 6G enabled healthcare industry, energy aware location management. Still this technology must resolve few challenges like security, IoT enabled trust network. This book will focus on the use of AI/ML-based techniques to solve issues related to 6G enabled networks, their layers, as well as their applications. It will be a collection of original contributions regarding state-of-the-art AI/ML-based solutions for signal detection, channel modeling, resource optimization, routing protocol design, transport layer optimization, user/application behavior prediction 6G enabled software-defined networking, congestion control, communication network optimization, security, and anomaly detection. The proposed edited book emphasis on the 6G network blended with Fog-IoT networks to introduce its applications and future perspectives that helps the researcher to apply this technique in their domain and it may also helpful to resolve the challenges and future opportunities with 6G networks.

Download or read book Resource Allocation in Network Function Virtualization written by Song Yang and published by Springer Nature. This book was released on 2022-08-29 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Network Function Virtualization (NFV) has recently attracted considerable attention from both research and industrial communities. Numerous papers have been published regarding solving the resource- allocation problems in NFV, from various perspectives, considering different constraints, and adopting a range of techniques. However, it is difficult to get a clear impression of how to understand and classify different kinds of resource allocation problems in NFV and how to design solutions to solve these problems efficiently. This book addresses these concerns by offering a comprehensive overview and explanation of different resource allocation problems in NFV and presenting efficient solutions to solve them. It covers resource allocation problems in NFV, including an introduction to NFV and QoS parameters modelling as well as related problem definition, formulation and the respective state-of-the-art algorithms. This book allows readers to gain a comprehensive understanding of and deep insights into the resource allocation problems in NFV. It does so by exploring (1) the working principle and architecture of NFV, (2) how to model the Quality of Service (QoS) parameters in NFV services, (3) definition, formulation and analysis of different kinds of resource allocation problems in various NFV scenarios, (4) solutions for solving the resource allocation problem in NFV, and (5) possible future work in the respective area.

Download or read book Artificial Intelligence and Security written by Xingming Sun and published by Springer Nature. This book was released on 2020-09-12 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3-volume set CCIS 1252 until CCIS 1254 constitutes the refereed proceedings of the 6th International Conference on Artificial Intelligence and Security, ICAIS 2020, which was held in Hohhot, China, in July 2020. The conference was formerly called “International Conference on Cloud Computing and Security” with the acronym ICCCS. The total of 178 full papers and 8 short papers presented in this 3-volume proceedings was carefully reviewed and selected from 1064 submissions. The papers were organized in topical sections as follows: Part I: artificial intelligence; Part II: artificial intelligence; Internet of things; information security; Part III: information security; big data and cloud computing; information processing.

Download or read book Spectrum and Power Allocation in Cognitive Radio Systems written by Suriyan, Kannadhasan and published by IGI Global. This book was released on 2024-08-06 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: As wireless services rapidly expand, the inefficient use of limited spectrum resources poses a critical challenge. The conventional approach to spectrum allocation, based on fixed assignments, could be more effective in meeting the escalating demand for wireless devices and systems. Cognitive radio technology offers a transformative solution by reimagining the spectrum as a multidimensional space, enabling opportunistic access to underutilized bands. However, the field of cognitive radio is still in its early stages, needing more in-depth analyses and descriptions of crucial processes. Spectrum and Power Allocation in Cognitive Radio Systems addresses this pressing need by offering a comprehensive guide for academic scholars, researchers, and industry professionals. This book delves into cognitive radio technology's foundations, organization, and challenges, providing insights into dynamic spectrum access, networking protocols, hardware architecture, and emerging applications. It presents advanced topics such as spectrum sensing algorithms, cooperative spectrum sensing, and multi-user access, offering practical solutions to enhance spectrum efficiency.

Download or read book Foundations of Modern Networking written by William Stallings and published by Addison-Wesley Professional. This book was released on 2015-10-27 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foundations of Modern Networking is a comprehensive, unified survey of modern networking technology and applications for today’s professionals, managers, and students. Dr. William Stallings offers clear and well-organized coverage of five key technologies that are transforming networks: Software-Defined Networks (SDN), Network Functions Virtualization (NFV), Quality of Experience (QoE), the Internet of Things (IoT), and cloudbased services. Dr. Stallings reviews current network ecosystems and the challenges they face–from Big Data and mobility to security and complexity. Next, he offers complete, self-contained coverage of each new set of technologies: how they work, how they are architected, and how they can be applied to solve real problems. Dr. Stallings presents a chapter-length analysis of emerging security issues in modern networks. He concludes with an up-to date discussion of networking careers, including important recent changes in roles and skill requirements. Coverage: Elements of the modern networking ecosystem: technologies, architecture, services, and applications Evolving requirements of current network environments SDN: concepts, rationale, applications, and standards across data, control, and application planes OpenFlow, OpenDaylight, and other key SDN technologies Network functions virtualization: concepts, technology, applications, and software defined infrastructure Ensuring customer Quality of Experience (QoE) with interactive video and multimedia network traffic Cloud networking: services, deployment models, architecture, and linkages to SDN and NFV IoT and fog computing in depth: key components of IoT-enabled devices, model architectures, and example implementations Securing SDN, NFV, cloud, and IoT environments Career preparation and ongoing education for tomorrow’s networking careers Key Features: Strong coverage of unifying principles and practical techniques More than a hundred figures that clarify key concepts Web support at williamstallings.com/Network/ QR codes throughout, linking to the website and other resources Keyword/acronym lists, recommended readings, and glossary Margin note definitions of key words throughout the text

Download or read book Implementing IBM Software Defined Network for Virtual Environments written by Sangam Racherla and published by IBM Redbooks. This book was released on 2014-09-04 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This IBM® Redbooks® publication shows how to integrate IBM Software Defined Network for Virtual Environments (IBM SDN VE) seamlessly within a new or existing data center. This book is aimed at pre- and post-sales support, targeting network administrators and other technical professionals that want to get an overview of this new and exciting technology, and see how it fits into the overall vision of a truly Software Defined Environment. It shows you all of the steps that are required to design, install, maintain, and troubleshoot the IBM SDN VE product. It also highlights specific, real-world examples that showcase the power and flexibility that IBM SDN VE has over traditional solutions with a legacy network infrastructure that is applied to virtual systems. This book assumes that you have a general familiarity with networking and virtualization. It does not assume an in-depth understanding of KVM or VMware. It is written for administrators who want to get a quick start with IBM SDN VE in their respective virtualized infrastructure, and to get some virtual machines up and running by using the rich features of the product in a short amount of time (days, not week, or months).