A single ip packetbased network which replaces the different transport networks. A next generation network ngn is a packetbased network. Huawei oaa000002 ngn description for fixed network training curriculum issue 2 free download as powerpoint presentation. Also we will describe the wimax technology, main standards, routing metrics and integration of wimax technology into ngn network. Pdf next generation network design and capacity dimensioning. Presentation application session transport network data link physical layer 7 layer 6 layer 5 layer 4 layer 3 layer 2 layer. Pdf itut international telecommunication union, telecommunication. Next generation networks architecture and layered endtoend. Network access process function packet transport function media resource processing function t1 t3 t20 t7 t4 ls function user profile db function registration function t6 t8 t9 t t12 t11 t15 t16 t18 s1 s4 s9 s10 s11 s. The softswitch is designed to replace the legacy local and transit switches that are based on the circuit switching technologies 1. Softswitchis so called because it is typically a software. 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. 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.
A multiservice network able to support voice, data and video. 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. Thus, edge routers can act as either the media gateway or the packet backbone switchrouter in the overall architecture. 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.
This new network is called the next generation network. Conformance testing of various l2 to l3 protocols as per ietfrfcs functional testing of l4 to l7 protocols including voip protocols. As an example of convergence in ngn, the paper discusses ip. The ip multimedia subsystem ims is a control architecture framework for the next generation network ngn. Pdf next generation network ngn internet protocol ipcentric converged. Sometimes a ngn is referred to as an allip network. It is the convergence of service provider networks that includes the public switched telephone network, the data network the internet, and, in some instances, the. Control layer controls the elements of the network, establishes and tears down media connections. Next generation networks are sometimes seen as ims over fixed. 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. There are three distinct operational layers or planes. Initially, the term next generation network was used to refer to the transformation of the core network to ip. The nass and racs layers are quite reasonable, as access to the network must necessarily be controlled.
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. Ngn is developed around the concept of packet switching as in internet. Next generation networks ngnfuture of telecommunication. Two different subnet may have different addressing schemes or non. Nextgeneration public network switching 2003 gartner, inc. 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.
Evaluation of next generation networks semantic scholar. Next generation networks architecture and layered endto. 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. Scope of ngn network border other ngn other ip mm network e. Huawei oaa000002 ngn description for fixed network. Pdf ngn based on ims ip multimedia subsystem will bring many benefits to network operators. Underlying network and access is enabled across a wide range of broadband technologies, both wireless e.
The pdf may of may not be included in the same physical unit. A network using packet mode technology to transport of all kind of information. Cisco ip ngn convergence layers intelligent networking data center data center presencebased telephony presencebased telephony web services web services mobile applications mobile. The nextgeneration network ngn is a body of key architectural changes in telecommunication core and access networks. Other services must still be supported but the network is not optimized around them ipodwdm provides the required innovation. This white paper is intended for network operations staff, senior level network operations management, and product services marketing staff at service providers looking to implement next generation network infrastructure. A network with open interfaces between transport, control and applications. 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. Next generation network ngn is a broad term used to describe architectural evolution and innovation in telecommunication and access networking. Network layer and ip protocol cse 32, winter 2010 instructor.
It is an encapsulating protocol similar to the way ethernet is an encapsulating protocol. Ip is the standard for routing packets across interconnected networkshence, the name internet. If we view the original check as a unit of data needed to be sent, we now have two envelopes required. Next generation networks 2 section 1 1 summary introduction 1.
The most significant protocol at layer 3 also called the network layer is the internet protocol, or ip. The nature of ngn as a result of division into layers provides flexibility, scalability and openness of the converged ngn platform. Chapter 1 introduction to networking and the osi model. 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. 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. Application layer enables the provisioning of services and provides the control and logic for the execution of services. Ofcom believes there is an opportunity for the development of competing next. 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. On the design of next generation network architecture for. A ngn is a packetbased network able to provide telecommunication services and able to make use of multiple broadband. Nextgeneration network ngn is a new concept and becoming more and more important for future telecommunication networks. Through these components, it might be possible to truly deliver a new kind of network that users may find useful.
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. Notice that the bottom layer is identified as the first layer. Network control layer third layer network control layer third layer soft switch protocols. Wimax in ngn network are higher bandwidth and secure transmission. 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. A next generation network ngn is a telecommunications networkthatuses a voice and multimedia switch based on the ip technologies.
Osi model open system interconnection functions of 7 osi layers in hindi data communication and networking video lectures in hindi. Scribd is the worlds largest social reading and publishing site. This paper illustrates five function layers of ngn architecture and discusses some endtoend qos quality of service issues for ngn called ngnqos. Network layer manages options pertaining to host and network addressing, managing subnetworks, and internetworking. Management layer covers network management ensuring service fulfillment, service. The itut has started its work on ngn in 2003 by creating the socalled joint rapporteur group on next generation network jrgngn, which targeted to study several main subjects such as.
Access independent layer is responsible for the transport of media and signaling messages. Abstract next generation network ngn completely redefines our traditional. Ngns are commonly built around the internet protocol. In this paper we will describe shortly ngn network, protocols and services offered. L2l7 testing of various network elements and their performances. A nextgeneration network ngn is the term given to describe a telecommunications packetbased network that handles multiple types of traffic such as voice, data, and multimedia. Ngn architectures, protocols and services communication. A network with a control plane signaling, control separated from the transportswitching plane. The only interesting aspect of the ngn architecture as proposed by the itu and etsi is the other multimedia components. As per itu, next generation network ngn is a packetbased. Signaling architecture and protocols for the next generation network. In 6, a community health service architecture based on the internet of things iot architecture is proposed for health care.
Network layer takes the responsibility for routing packets from source to destination within or outside a subnet. Next generation networks are used to transmit all kinds of services and information including voice datacalls, audio datacalls and multimedia information such as videos. The deployment of networks by different operators would more or less evolve on the same extent as access tech nologies would be the same. This paper gives a brief overview and functional architecture of itut ngn, and. Ip over dwdm tim pennell ww sp technical operations. Next generation networks ngn lecture at the signalling protocols course. 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. Ngn with its need in future networking, its basic architecture and applications. The network interface card address, called the hardware address, is protocolindependent and is usually assigned at the factory.
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