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NGNNext Generation
NetworkPresented By
Nour Frikha Becem Abid
2016-2017
PlanIntroductionNGN DefinitionNGN StandardizationNGN Conceptual ModelConvergence Towards NGNNGN Softswitch-Base ArchitectureNGN Configuration and Topology
01
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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