Author Topic: NGN ( Next Generation Network)  (Read 360 times)

Offline arefin

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NGN ( Next Generation Network)
« on: May 17, 2013, 10:49:20 AM »
NGN   

Next Generation Network is a packet-based network that can be used for both telephony and data and that supports mobilility. Initially, the term Next Generation Network was used to refer to the transformation of the core network to IP. Sometimes a NGN is referred to as an all-IP network.

The ITU defined an NGN as:

    “A Next Generation Network (NGN) is a packet-based network able to provide services including Telecommunication Services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. ”

The NGN is characterized by the following fundamental aspects:

•   Packet-based transfer
•   Separation of control functions among bearer capabilities, call/session, and application/ service
•   Decoupling of service provision from network, and provision of open interfaces
•   Support for a wide range of services, applications and mechanisms based on service building blocks (including real time/ streaming/ non-real time services and multi-media)
•   Broadband capabilities with end-to-end QoS and transparency
•   Interworking with legacy networks via open interfaces
•   Generalized mobility
•   Unrestricted access by users to different service providers
•   A variety of identification schemes which can be resolved to IP addresses for the purposes of routing in IP networks
•   Unified service characteristics for the same service as perceived by the user
•   Converged services between Fixed/Mobile
•   Independence of service-related functions from underlying transport technologies
•   Compliant with all Regulatory requirements, for example concerning emergency communications and security/privacy, etc.

“Allahumma inni as'aluka 'Ilman naafi'an, wa rizqan tayyiban, wa 'amalan mutaqabbalan”

O Allah! I ask You for knowledge that is of benefit, a good provision and deeds that will be accepted. [Ibne Majah & Others]
.............................
Taslim Arefin
Assistant Professor
Dept. of ETE, FE
DIU