ngn presentation

NGNNext Generation

NetworkPresented By

Nour Frikha Becem Abid

2016-2017

PlanIntroductionNGN DefinitionNGN StandardizationNGN Conceptual ModelConvergence Towards NGNNGN Softswitch-Base ArchitectureNGN Configuration and Topology

01

02

03

04

05

06

07

Conclusion08

Introduction

Today, telephony, the Internet, and the cellular mobile networks continue to be different domains, each has its own protocols and services.

Internet Other…

PSTN Mobile

NGN ALL-IP Network

Introduction General Idea

3

2 1

3

12

Data

Voice

Multimedia

Packets

Introduction History

NGN Definition

NGN is a packet-based network able to provide Telecommunication Services to users and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent of the underlying transport-related technologies.

It enables unfettered access for users to networks and to competing service providers and services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.

NGN DefinitionCharacteristics

QoS-enabled Transport Technologies(Delay, Throughput, and Reliability)

Unified Global Networking PlatformPacket-Based NetworkProvides Telecommunication Services to Users

Services are Independent of Transport TechnologiesUnfettered Access for Users to Networks and ServicesGeneralized Mobility Which Allow Consistent and Ubiquitous Provision of Services to Users

3GPP

NGN StandardizationKey Players

ITU-TITU Telecommunication Standardization Sector

ITU-TNGN-GSI

ATISNGN FG ETSI

TISPAN

ATISAlliance for Telecom. Industry

ETSIEuropean Telecom. Standards Institute

3GPP3rd Generation Partnership Project

NGN StandardizationKey Players (continued)

NGN StandardizationProblems

Within the NGN concepts the standardization institutions are still working on the following issues and problems:> Existing networks migration towards NGN> Development in the field of access technologies> Connection of other networks to IP networks> Provision of services and development of new ones> Interworking in the area of addressing> Interworking of signaling systems> Roaming a mobility

NGN Conceptual Model

Access network layers

Transport layer

Control layer

Services &

applications layerNGN

Managementlayer

Access to NGN

NGN applications and services, application server, features server, media server

MGC, Softswitch, Call Agent, Gatekeeper

Transmission Packet network, VOIP, Media gateways, Signalling gateway, Core Packet network

Fixed, Data, Cable, Wireless fixed, Mobile, Satellite

In the NGN it is required that the network control is not determined only by the terminal equipment applications, but that the network intelligence may carry out control over the network at all levels.

Management layerNGN Conceptual Model

Management layer tasks:

Resource management (capacity, ports, and physical elements) and QoS in access to the network and the transport network

Various media processing, encoding, data transfer (information flows)

Service control

Management of calls and connection. Management and interworking of all elements of the reference architecture

Convergence towards NGN

Today’s network is divided into:o Public Switched Telephone Networko Packet Switched Networks (LAN, WAN,…)o Cellular Mobile Networks

Convergence is the process of interconnection of traditional switched circuit networks (PSTN and Mobile Networks) and packet-base networks that use IP (Internet Protocol).

Migration scenarios of different types of networks platforms are based on the idea to integrate TDM (Time Division Multiplexing) and IP (Internet Protocol) platforms into one converged NGN platform (from the point of network infrastructure, as well as services).

Evolutional scenarios

TDM

IP

NGN

Convergence towards NGN

Evolutional scenarios (continued)Convergence towards NGN

PSTN & IntelligentNetworks

Internet & DataNetworks

Cable Networks

Wireless & Mobile Networks

InternetTelephony

HybridNetworks

VoIPNetworks

VoCATV

GSM GPRS UMTS

NGN

From Vertical Silos to Horizontal NGN ArchitectureConvergence towards NGN

Transport

Service Control

Application

Access

End Points Mob

ile N

etw

orks

PST

N/I

SDN

Dat

a/IP

Net

wor

ks

C

able

/Ter

rest

rial

TV

Vertical Silo Architecture per service

Services

Existing and Newly Emerging Services

Horizontal Layered Multi-Service Architecture

Services & Network Control (QoS, Security, IP Mobility)

Multi-Service IP Backbone

Wireless Access

Wireline Access

Services

Comparing the Features of PSTN/IN, Internet, and NGNConvergence towards NGN

PSTN/IN Internet NGNMultimedia Services NO YES YES

QoS support YES NO YES

Network Intelligence YES NO YES

Intelligent Terminal Equipment NO YES YES

Integrated Supervision & Control YES NO YES

Reliability High Low High

Service Creation Complex ad-hoc Systematic

Simplicity of Services use Medium High High

Modularity Low Medium High

Time of Service Introduction Long Short Short

Openness of Architecture Small High High

NGN Softswitch-Base Architecture

Access Networ

k

PSTN / IN

RTPRTCP

VoIPIP / MPLS

MGCPH.323SIP

TrunkingGateway(MGW)

TDM RTP/RTCP

AccessGateway

MediaServerApplication

Server

SS7

Sigt

ran

SignalingGateway

MediaGateway

Controller

SIP

SIP

MGCPH.248

MGCPH.323SIP

MGCPH.248

Media Gateway ControllerSIP-T, BICC

M

T AG

SIG

NGN Softswitch-Base ArchitectureComponents

Media Gateway Controller

Generally serves as components for controlling of communication relations of users and other network components; provides call routing, network signaling, billing, and other logical functions.

Call Agent Softswitch

M

NGN Softswitch-Base ArchitectureComponents

Media Gateway

Operate within transport plane, perform all function related to media physical transport between different networks, media processing functions (transcoding, echo cancellation, jitter managing), tones processing and management of information transport.

Trunking gateways: interface between the PSTN/PLMN and VoIP

Residential gateway: provide traditional analog (RJ11) interface to VoIP

Access gateway: provide traditional analog or PBX interface to VoIP

Signaling network: provide change of signalization systems between PSTN/PLMN to VoIP

T

NGN Softswitch-Base ArchitectureComponents

ApplicationServer

Application server is implemented to perform functionalities specific to certain service, perform specialized service logic call control, also includes more functionalities in terms of user web interface, end-points management, etc. For example it can provide specific videoconferencing service, Call Center service or IP Centrex service.

NGN Softswitch-Base ArchitectureComponents

MediaServer

Media server provides functionalities allow interaction between calling party and application using end-point device. It provides Media Resource Functions (tones detection, speech synthesis and recognition, compressions, media mixing, etc.) and Media Control Functions that control of media functions (voice message play management, conference bridge, fax message management, etc.)

NGN Configuration and Topology

INNI: Internal Network-Network InterfaceNNI: Network-Network InterfaceUNI: User Network Interface

Conclusion Other Architectures

IMS and entities (P-CSCF, I-CSCF,…) TISPAN NGN GSM

NGN Protocols SIP (Session Initiation Protocol) SDP (Session Description Protocol) RTP (Real Time Transport Protocol)

NGN Standards Services and QoS

Thank YouFor Your Attention