Balancing the conflicting practices of the “one service-one technology” and “one technology for all services” paradigms is a significant challenge. In response to this challenge, the telecommunications industry is shifting to a converged network paradigm based on Multiprotocol Label Switching (MPLS). MPLS can support multiple services over one infrastructure, thereby increasing flexibility and providing economies of scale. This paper examines two generic approaches to building a converged MPLS core. Based on our assessment of the advantages and challenges associated with these two approaches, we propose that carriers implement a distributed architecture to migrate to MPLS and scale existing layer 2 services. This paper discusses the technical merits of this architecture, which include high scalability, investment protection, multivendor interoperability, and rapid service introduction. It also describes how carriers can preserve quality of service (QoS) and service level agreements (SLAs) through the MPLS core. Finally, it describes a service-centric network management model that makes use of existing operation systems.
Service convergence, content digitization, rapid and flexible service delivery, reduction of capital and operating costs, economies of scale, changes in telecom policy and regulation, and ever increasing competition have been key factors in the evolution of virtualized Next Generation Networks (vNGN). IPcentric converged networks aim to provide a multitude of services over a single network infrastructure. Tremendous success and benefit of server virtualization in data centers is driving the adaption of network virtualization. Network virtualization is applicable to enterprise data center, and enterprise as well as wide area networks. The focus of this paper is network virtualization aspects of service providers’ next generation network. The key factors for moving to virtualized network is optimal use and sharing of network infrastructure even among competitive service providers, programmability of network and rapid
Internet of Things (IoT) refers to heterogeneous systems and devices (often referred to as smart objects) that connect to the internet, and is an emerging and active area of research with tremendous technological, social, and economical value for a hyper-connected world.In this paper, we will discuss how billions of these internet connected devices and machines will change the future in which we shall live, communicate and do the business.The devices, which would be connected to the internet, could vary from simple systems on chip (SOC) without any Operating System (OS) to highly powerful processor with intelligent OS with widely varying processing capability and diverse protocol support.Many of these devices can also communicate with each other directly in a dynamic manner.A key challenge is: how to manage such a diverse set of devices of such massive scale in a secured and effective manner without breaching privacy.In this paper, we will discuss various management issues and challenges related to different communication protocol support and models, device management, security, privacy, scalability, availability and analytic support, etc., in managing IoT.The key contribution of this paper is proposal of a reference management system architecture based on cloud technology in addressing various issues related to management of IoThaving billions of smart objects.
Service convergence, content digitization, rapid and flexible service delivery, reduction of capital and operating costs, economies of scale, changes in telecom policy and regulation, and ever increasing competition have been key factors in the evolution of virtualized Next Generation Networks (vNGN).IPcentric converged networks aim to provide a multitude of services over a single network infrastructure.Tremendous success and benefit of server virtualization in data centers is driving the adaption of network virtualization.Network virtualization is applicable to enterprise data center, and enterprise as well as wide area networks.The focus of this paper is network virtualization aspects of service providers' next generation network.The key factors for moving to virtualized network is optimal use and sharing of network infrastructure even among competitive service providers, programmability of network and rapid introduction of new service and standard based on open platform rather than proprietary implementation.Evolving Software Defined Network (SDN) and Network Function Virtualization (NFV) shall enable common network infrastructure sharing, control, and management at a higher layer thus making network devices more generic and less intelligent, thus enabling cost competitiveness and quick service delivery.Network virtualization shall enable key benefits such as lower cost, flexibility, efficiency, and security, However, the deployment of virtualized next generation networks has brought its unique challenges for network managers and planners, as the network has to be planned in a comprehensive way with effective management of virtual network elements, its correlation with physical infrastructure and monitoring of control functions and server platforms.This paper discusses generic next generation network, its virtualization, and addresses the challenges related to the planning and managing of virtualized next generation networks.This paper proposes a reference OSS model enabling effective management of vNGN, which is key contribution of this paper.
ATM (Asynchronous Transfer Mode) is considered to be the most suitable for Broadband Integrated Service Digital Networks (B-ISDN), because of its time transparency and bandwidth flexibility. ATM switch constitutes a crucial component of broadband networks. The ATM switching differs considerably from the conventional switching techniques due to various reasons. The high-speed interface to the switch, transport of wide variety of traffic with different Quality of Service (QoS) requirements in a seamless manner, and potential statistical multiplexing gain from the ATM cell stream, impose some constraints in the design of the ATM switching systems. In this paper, we discuss various components of ATM switching system from the view of support of B-ISDN Protocol Reference Model (PRM). The focus is on the various issues in the context of design of control module and management module of the switching system which supports functionality of control plane and management plane of B-ISDN Protocol Reference Model, respectively.
ATM (Asynchronous Transfer Mode) is considered to be the most suitable for broadband integrated networks, because of its time transparency and bandwidth flexibility. Most of the ATM switch architectures proposed are space division type and based on multistage interconnection networks. In this paper, a shared media type of ATM switch architecture is proposed. An important feature of this architecture Is the complete separation of control and data transfer phase. The control information to route the cell internal to switch fabric, is transmitted prior to cell transmission in a pipelined fashion. This helps high speed transmission of data without any header processing bottleneck at the output port The performance of the switch is similar to that of complete output buffer switch. A simple and efficient scheme is proposed to implement broadcasting and multicasting feature without any cell duplication at the input of the switch fabric.
Service convergence, digitization of the content and packet based information transport, in addition to economies of scale, rapid and flexible service delivery, reduction of capital and operating costs, changes in telecom policy and regulation, and ever increasing competition have been key factors in the evolution of Next Generation Networks (NGN). Telecom service providers worldwide are migrating their legacy networks towards, or deploying new next generation networks to meet the market and competitive demands. The IP-centric converged next generation networks aim to provide a multitude of services over a single integrated network infrastructure, rather than multiple segmented and overlay networks as have existed before. It is also expected that the legacy network will co-exist with next generation networks in the foreseeable future. However, the deployment of next generation networks has brought its unique challenges for network managers and planners, as network has to be planned in a cost effective way without over or under building network resources. Moreover, as the next generation networks is a single converged network, the traffic load in one domain of the network has major impact in other domains and overall network as well. This paper addresses the challenges related to the planning of the next generation networks and a reference architecture enabling integrated end-to-end planning of next generation network covering multitude of domains and layers.
ATM (Asynchronous Transfer Mode) is considered to be most suitable for broadband integrated networks, because of its time transparency, bandwidth flexibility, and support of various services in a seamless manner. With rapid growth of ATM networks, its effective management across private as well as public networks has become crucial, in order to provide users with various services with different Quality of Service (QoS) requirements. This paper will focus on different issues regarding the applicability of Telecommunication Management Network (TMN) model to ATM networks, the use of various Management Information Base (MIBs), and protocols for the management of ATM networks.
Service convergence, content digitization, rapid and flexible service delivery, reduction of capital and operating costs, economies of scale, changes in telecom policy and regulation, and ever increasing competition have been key factors in the evolution of virtualized Next Generation Networks (vNGN).IPcentric converged networks aim to provide a multitude of services over a single network infrastructure.Tremendous success and benefit of server virtualization in data centers is driving the adaption of network virtualization.Network virtualization is applicable to enterprise data center, and enterprise as well as wide area networks.The focus of this paper is network virtualization aspects of service providers' next generation network.The key factors for moving to virtualized network is optimal use and sharing of network infrastructure even among competitive service providers, programmability of network and rapid introduction of new service and standard based on open platform rather than proprietary implementation.Evolving Software Defined Network (SDN) and Network Function Virtualization (NFV) shall enable common network infrastructure sharing, control, and management at a higher layer thus making network devices more generic and less intelligent, thus enabling cost competitiveness and quick service delivery.Network virtualization shall enable key benefits such as lower cost, flexibility, efficiency, and security, However, the deployment of virtualized next generation networks has brought its unique challenges for network managers and planners, as the network has to be planned in a comprehensive way with effective management of virtual network elements, its correlation with physical infrastructure and monitoring of control functions and server platforms.This paper discusses generic next generation network, its virtualization, and addresses the challenges related to the planning and managing of virtualized next generation networks.This paper proposes a reference OSS model enabling effective management of vNGN, which is key contribution of this paper.
Service convergence, content digitization, rapid and flexible service delivery, reduction of capital and operating costs, economies of scale, changes in telecom policy and regulation, and ever increasing competition have been key factors in the evolution of virtualized Next Generation Networks (vNGN).IPcentric converged networks aim to provide a multitude of services over a single network infrastructure.Tremendous success and benefit of server virtualization in data centers is driving the adaption of network virtualization.Network virtualization is applicable to enterprise data center, and enterprise as well as wide area networks.The focus of this paper is network virtualization aspects of service providers' next generation network.The key factors for moving to virtualized network is optimal use and sharing of network infrastructure even among competitive service providers, programmability of network and rapid introduction of new service and standard based on open platform rather than proprietary implementation.Evolving Software Defined Network (SDN) and Network Function Virtualization (NFV) shall enable common network infrastructure sharing, control, and management at a higher layer thus making network devices more generic and less intelligent, thus enabling cost competitiveness and quick service delivery.Network virtualization shall enable key benefits such as lower cost, flexibility, efficiency, and security, However, the deployment of virtualized next generation networks has brought its unique challenges for network managers and planners, as the network has to be planned in a comprehensive way with effective management of virtual network elements, its correlation with physical infrastructure and monitoring of control functions and server platforms.This paper discusses generic next generation network, its virtualization, and addresses the challenges related to the planning and managing of virtualized next generation networks.This paper proposes a reference OSS model enabling effective management of vNGN, which is key contribution of this paper.
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