A multiservice network able to support voice, data and video. Next generation networks architecture and layered endto. Next generation networks are used to transmit all kinds of services and information including voice datacalls, audio datacalls and multimedia information such as videos. Network layer manages options pertaining to host and network addressing, managing subnetworks, and internetworking. Ngn requirements, the general reference model, ngn functional requirements and functional architecture, and evolution to ngn from existing telecommunication. As an example of convergence in ngn, the paper discusses ip. Next generation networks 2 section 1 1 summary introduction 1. The internet protocol is the most significant integration factor because it is available globally and, at least in principle, it can use almost all the services and applications in all the networks.
The pdf may of may not be included in the same physical unit. Ngn concepts a multiservicenetwork able to support voice, data and video a network with a control plane signaling, control separated from the transportswitching plane a network with open interfaces between transport, control and applications a network using packet mode technology to transport of all kind of information a network with guaranteed qos for different traffic. Wimax integration in ngn network, architecture, protocols. In this paper we will describe shortly ngn network, protocols and services offered. Within the service layering semantics of the osi network architecture, the network layer responds to service requests from the transport layer and issues service requests to the data link layer. Thus, edge routers can act as either the media gateway or the packet backbone switchrouter in the overall architecture. The nextgeneration network ngn is a body of key architectural changes in telecommunication core and access networks. Scope of ngn network border other ngn other ip mm network e. Nextgeneration network ngn is a new concept and becoming more and more important for future telecommunication networks. A network with a control plane signaling, control separated from the transportswitching plane. The application layer makes use of the capabilities provided by other functional layers to provide multimedia services and applications based on open architecture of apis23. The ip multimedia subsystem ims is a control architecture framework for the next generation network ngn. The network interface card address, called the hardware address, is protocolindependent and is usually assigned at the factory. Next generation networks ngnfuture of telecommunication.
Evaluation of next generation networks semantic scholar. Softswitchis so called because it is typically a software. Signaling architecture and protocols for the next generation network. This paper gives a brief overview and functional architecture of itut ngn, and. A single ip packetbased network which replaces the different transport networks. This address is technically called the media access control address mac because it is found on the mac sub layer of the data link layer. Two different subnet may have different addressing schemes or non. Next generation networks ngn lecture at the signalling protocols course. Scribd is the worlds largest social reading and publishing site. Ngn with its need in future networking, its basic architecture and applications. Pdf next generation network ngn internet protocol ipcentric converged. Application layer enables the provisioning of services and provides the control and logic for the execution of services. The only interesting aspect of the ngn architecture as proposed by the itu and etsi is the other multimedia components.
It is an encapsulating protocol similar to the way ethernet is an encapsulating protocol. There are three distinct operational layers or planes. L2l7 testing of various network elements and their performances. Wimax in ngn network are higher bandwidth and secure transmission. This new network is called the next generation network. Cisco ip ngn convergence layers intelligent networking data center data center presencebased telephony presencebased telephony web services web services mobile applications mobile. Manila, philippines, june 2010 itu ngn elements ogs union network architecture existing networks and architecture transit networktransit network national layernational layer regional layerregional layer ru layer lex layer customers layer hierarchical topology with 4 to 5 layers, connectivity to the upper next layer and within. Also we will describe the wimax technology, main standards, routing metrics and integration of wimax technology into ngn network. Ip is the standard for routing packets across interconnected networkshence, the name internet. Pdf itut international telecommunication union, telecommunication. Pdf next generation network design and capacity dimensioning. A nextgeneration network ngn is a packetbased network which can provide services including telecommunication services and able to make use of multiple broadband, quality of serviceenabled transport technologies and in which servicerelated functions are independent from underlying transportrelated technologies. Improved layered architecture for internet of things. If we view the original check as a unit of data needed to be sent, we now have two envelopes required.
The most significant protocol at layer 3 also called the network layer is the internet protocol, or ip. A next generation network ngn is a packetbased network. Ip over dwdm tim pennell ww sp technical operations. Note that network layer addresses can also be referred to as logical addresses. Next generation networks architecture and layered endtoend. Huawei oaa000002 ngn description for fixed network training curriculum issue 2 free download as powerpoint presentation. The nass and racs layers are quite reasonable, as access to the network must necessarily be controlled. A next generation network ngn is a telecommunications networkthatuses a voice and multimedia switch based on the ip technologies. The nature of ngn as a result of division into layers provides flexibility, scalability and openness of the converged ngn platform. Next generation networks are sometimes seen as ims over fixed. Nextgeneration public network switching 2003 gartner, inc. Presentation application session transport network data link physical layer 7 layer 6 layer 5 layer 4 layer 3 layer 2 layer.
A network with open interfaces between transport, control and applications. Ip ngn journey requires multiple layers of convergence mobile pstn broadband services optical highspeed internet fr atm ip nextgeneration network common subscriber management mobile, wlan dsl, cable, ftth content application convergence integration of new innovative ip dvv services over broadband for increased revenue service continuity. Ngn tutorial pdf version quick guide resources job search discussion next generation networks ngn is a part of presentday telecommunication system, which is equipped with capabilities to transport all sorts of media, such as voice, video, streaming audiovideo, text, etc. Carrier ethernet is a set of extensions to ethernet to enable sps to offer large scale ethernet services and use ethernet in their networks 3.
Ofcom believes there is an opportunity for the development of competing next. Control layer controls the elements of the network, establishes and tears down media connections. Explores advanced topics such as ipv6based ngn, network virtualization, and future packet based networks, as well as business challenges and opportunities for the ngn evolved networks and services essential reading for engineers and employees from regulatory bodies, government organisations, telecommunication companies, ict companies. Network layer and ip protocol cse 32, winter 2010 instructor. Abstract next generation network ngn completely redefines our traditional. Other services must still be supported but the network is not optimized around them ipodwdm provides the required innovation. Ngn architectures, protocols and services communication.
The general idea behind the ngn is that one network transports all information and services voice, data, and all sorts of media such as video by encapsulating these into ip packets, similar to those used on the internet. Pdf ngn based on ims ip multimedia subsystem will bring many benefits to network operators. Network layer takes the responsibility for routing packets from source to destination within or outside a subnet. The softswitch is designed to replace the legacy local and transit switches that are based on the circuit switching technologies 1. As heterogeneous access technologies have been developed, network node has the ability to simultaneously connect multiple access networks to support mobility, reliability, load sharing, etc. Huawei oaa000002 ngn description for fixed network. Through these components, it might be possible to truly deliver a new kind of network that users may find useful. In 6, a community health service architecture based on the internet of things iot architecture is proposed for health care. Network control layer third layer network control layer third layer soft switch protocols. Ngns are commonly built around the internet protocol.
Underlying network and access is enabled across a wide range of broadband technologies, both wireless e. Sometimes a ngn is referred to as an allip network. Osi model open system interconnection functions of 7 osi layers in hindi data communication and networking video lectures in hindi. As per itu, next generation network ngn is a packetbased. Initially, the term next generation network was used to refer to the transformation of the core network to ip. Today, most of the telecom service providers are in the race of migrating from the public switched telephone network pstn to the next generation network ngn, all over the world. On the design of next generation network architecture for.
Next generation network ngn is a broad term used to describe architectural evolution and innovation in telecommunication and access networking. Layer 3 the network layer layer 3, the network layer of the osi model, provides an endtoend logical addressing system so that a packet of data can be routed across several layer 2 networks ethernet,token ring, frame relay, etc. Access independent layer is responsible for the transport of media and signaling messages. A ngn is a packetbased network able to provide telecommunication services and able to make use of multiple broadband. A network using packet mode technology to transport of all kind of information. This paper illustrates five function layers of ngn architecture and discusses some endtoend qos quality of service issues for ngn called ngnqos. Ngn is developed around the concept of packet switching as in internet. Management layer covers network management ensuring service fulfillment, service. The deployment of networks by different operators would more or less evolve on the same extent as access tech nologies would be the same. The network layer provides the means of transferring variablelength network packets from a source to a destination host via one or more networks.
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