Protocols in Next Generation Networks

Protocols in Next Generation Networks

Róbert Horváth (Budapest University of Technology and Economics, Hungary), Gábor Kovács (Budapest University of Technology and Economics, Hungary) and Zoltán Pap (Ericsson, Hungary)
DOI: 10.4018/978-1-60960-732-6.ch010


This chapter focuses on Next Generation Networks (NGN), how protocols employed in different segments of the telecommunication infrastructure interwork to guarantee the quality for different service types. After the interpretation of the definition and concept of NGN, the general architecture of NGN is presented with regard to the heterogeneous demands of services. The protocols used in different sections of the end-to-end communication relation are introduced from the point of view of service and transport functions of NGN. The main focus of the chapter is on the fixed access solutions and Ethernet based multi-service access and regional networks, but configuration and streaming protocols are covered as well.
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Next Generation Networks: Definition, Architecture, And Services

The NGN Definition

The term NGN is defined by the ITU as follows (ITU-T, 2004a):

A Next Generation Network is a packet-based network able to provide telecommunication services and able to make use of multiple broadband, quality of service (QoS) enabled transport technologies and in which service-related functions are independent of the underlying transport-related technologies.

The interpretation of the definition is the following. In NGN the interconnection of two endpoints, addressing and data transfer is done by packet-based technology, which is practically IP. Service and transport functions are separated. The transport medium must support different types of services, all services work over IP, and the QoS can be managed. Network access provider is the operator who owns the network infrastructure; application service provider is the operator who provides services to end user over that network. There is no telephone or television network anymore; however, the NGN has interfaces to existing networks like PSTN or PLMN (Public Land Mobile Network).

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