NEXT GENERATION NETWORKS

Next Generation Networks



Next Generation Networks

Introduction

The evolution of the sector towards converged networks and Next Generation Networks - NGN - is linked to the evolution of the state towards the Information Society, to the extent that these networks are the main transport infrastructure and information for connectivity of people. These developments imply for operators continuous innovation of its offer of services and networks to meet the needs of society. The convergence of services, applications and devices drives this trend, for customer benefits, it gets more and better services at a competitive cost. Next Generation Networks NGN (New Generation Networks) is a reality that can move towards achieving these objectives. In a context of convergence, the services operate using a single technology platform, so the CRT should be considered that the various references and regulatory parameters must also be integrated to ensure effective competition between operators in these markets.

Packet transport mechanisms employed by an NGN

Many definitions of NGN, however, on the international validity, we consider the definition given by the Study Group of the Telecommunication Standardization Sector of International Telecommunication Union (ITU-T) in Recommendation 2001, which defines an NGN as "packet-based network that allows the provision of telecommunications services and which can be used multiple transport technologies of broadband QoS-enabled (Quality of Service). These service-related functions are independent of the underlying technologies related to transportation, and allow users to unhindered access to networks and service providers and / or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. This definition suggests that both the functions relating to services and packet transport can be offered separately.

Key Features

By the standards of the ITU, the main characteristics of NGN, including in Recommendations are:

The transfer will be based on packages.

The control functions are separated from bearer capabilities, call / session, and application / service.

Decoupling of service provision from transport, and open interfaces are provided.

Support for a wide range of services, applications and mechanisms based on building block services (including real-time services / streaming and non real-time multimedia).

Will have broadband capabilities with quality of service (QoS) end to end.

Will interoperate with legacy networks via open interfaces.

Generalized mobility.

Unrestricted access by users to different service providers.

Different identification schemes.

Unified characteristics for the same service as perceived by the user.

Convergence between fixed and mobile services.

Independence of service-related functions with respect to the underlying transport technologies.

Support of multiple last mile technologies.

Compliance with all regulatory requirements, such a story in emergency communications, security, privacy, legal interception, etc..

These features focus on the need to see the user as a potential customer, whose demand must be addressed through new technological tools, which will bring benefits in terms of cost, quality of services provided and diversity of services.

Variety of services over a single common platform

As for the technology involved in NGN, it is based on a new architecture, where services are no longer vertically ...