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International Telecommunication Union
WTSA 2004. 7 October, Florianopolis Brazil
NGN in ITU-TNGN in ITU-T
Chae-Sub, LEEChairman of FG NGN
222.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Contents
1. Why NGN ?
2. NGN Standardization
3. Key Features
4. Future Issues
5. Conclusion
322.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Expected Future Transition Trend : End-End Packets
Past : Seper. of Voice & Data Transp.
Circuit Switch.Access Capa.
Circuit Switch.Transp. Capa.
Packet Switch.Transp. Capa.
Present : Sep. of V & D Access
xDSL / FTTx
Circuit Switch.Access Capa.
Circuit Switch.Transp. Capa.
Packet Switch.Transp. Capa.
Packet Switch.Access Capa.
Near Future : Integration of V & D Transport
VoIP / VToA
Circuit Switch.Access Capa.
Circuit Switch.Transp. Capa.
Packet Switch.Transp. Capa.
Packet Switch.Access Capa.
Future : Integration of V & D Access and Transp.
Packet Switch.Transp. Capa.
Packet Switch.Access Capa.
Packet based Environments1. Why NGN ?
422.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Separation btw. Services and Transport
1. Why NGN ?
Internet Protocol(IP)
Anything & Everything
Everything
Two Policy Domains
(Any & All Network technologies)
(Any/All Applicationse.g. voice , data , video)
ScopeOf
“Internet”
Services
Transport
Transport
Services
Telephone Services
Data Services (WWW, e-mail, etc)
Video Services (TV, movie, etc)
ACCESS ACCESSCORE
API
• Key Feature of IP : Anything over IP, IP over Everything
• Most of Services using IP as their connection platform
• Most of Networks supporting transport of IP packet
• IP plays a key role to separate Services with Transport
522.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Impacts to Policy and Regulation base
1. Why NGN ?
Phone
PSTN
Internet
IP-Net
M-Ph
Mobile
Pol. AReg. a
Current PolicyRegulationEnvironment (Vertical)
Pol. BReg. b
Pol. CReg. c
Resource-based Pol./Reg.
Video
NGN
VoiceInternet
IP (Future Packet ?) Platform
xDSL/Optic based Fixed-Mobile
MMPol.Reg.
Pol. XReg. x
New PolicyRegulationEnvironment (Horizontal)
• NGN provide a platform separating Services with Transport
• Politics and Regulation environment would be impacted with this
• Current Vertical environment would be changed to Horizontal env.
Service-based Pol./Reg.
622.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Broadcast.Telecom
A B
• Sep. Reg. Authority• Stable Bus. Structure• Stable Tech. Infras.
VoiceData Video
TelecomNetwork
Broadca.Network
Broadca.Services
TelecomServices
StartConvg.
Telecom. mixed with Broadcast.
A B
• Comp. btw. Reg. Aut.• Comp. btw. Bus. Play.• Comp. btw. Tech. Inf.
A B
• Sep. defini. (each side)• Exten. each Bus. area• Exten. of Tech. capa.
VoiceData Video
TelecomNetwork
Broadca.Network
Broadca.Services
TelecomServices
A·B Convg.
• Integ. Reg. Auth.• Confirmed Bus. Area• Stable Tech. Infras.
Convg.
Tele-Broadcast.
* 3M : Multimedia, Multiparty, Multicasting
Contents
NGN
3 M *Services
NGN triggering Convergence
1. Why NGN ?
722.04.23 WTSA 2004. 7 October, Florianopolis Brazil
3GPP/2
xDSL Forum
ATIS ETSI
TTA
TTC
CCSA
ITU-T FG NGN (’04.6 ~ ’05. 5)
NGN Standardization
ITU-T : NGN Project 2004(2001 ~ 2004)
SG 2
SG 4
SG 9
SG 11
SG 12
SG 13 SG 15
SG 16 SG 17
ITU-T JRG-NGN(2003. 9 ~ 2004. 6)
Q1 Q5 Q10
Q16 Q6
ITU-T
NGN
WS
(01 ~ 03)
2. NGN Standardization
822.04.23 WTSA 2004. 7 October, Florianopolis Brazil
NGN 2004 Project
o A new ITU Project on NGN : SG13, Nov. 2002o Project description document has been prepared
(http://www.itu.int/ITU-T/studygroups/com13/ngn2004/index.html )
o Fundamental characteristics for defining NGN
1. Packet-based transfer
2. Separation of control functions for bearer - call/session –
service
3. Decoupling of services and network, provision of open I/F
4. Wide range of services (RT/ streaming/ non-RT/ multimedia)
5. BB capabilities with e2e transparency, incl. AN utilization
6. Interworking with legacy networks
7. Generalized mobility
8. Unfettered access from users to competing SPs and
services
2. NGN Standardization
922.04.23 WTSA 2004. 7 October, Florianopolis Brazil
JRG on NGN
• ITU-T SG 13 launched JRG-NGN at 1st August 2003 : 3 Meetings
• Joint Special Rapporteur Group Activity within SG 13
• Focus on “Foundational Documentation of NGN” until June. 2004
Draft Recommendations in AAP
Y.NGN-Overview (Y.2001)
Overview of the NGN
Y.NGN-GRM (Y.2011) General principles and general reference model for NGNDeliverables for further study
Deliverables Title
Y.NGN-GRQ General requirements for NGN
Y.NGN- FRM Functional requirements and architecture of the NGN
Y.NGN-CONV Next Generation Networks – Convergence scenarios
Y.NGN-MOB Mobility management requirements and architecture for NGN
Y.NGN-CMIP Customer manageable IP network
Y.NGN-MIG Migration of networks to NGN
Y.PSTN-NGN PSTN migration to NGN
2. NGN Standardization
1022.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Deliverables on QoS for further study
Deliverables Title
Y.NGN-QoS General aspects of QoS and network performance in the NGN
Y.e2eqos.1Requirements and framework for end-to-end QoS architecture for NGN
Y.e2eqos.2An end-to-end QoS architecture based on centralized resource control for IP networks supporting NGN services
Y.123.qosA QOS ARCHITECTURE FOR ETHERNET-BASED IP ACCESS NETWORK
Y.ipaqos A QoS Framework for IP based access networks
Y.NGN-NHNperf
Network performance of hybrid networks in NGN
JRG on NGN2. NGN Standardization
1122.04.23 WTSA 2004. 7 October, Florianopolis Brazil
• Functional & Nomadicity Architecture (base on IMS & non-IMS)• QoS (include the xDSL Access)• Security Capability (inc. Authentication)• NGN Control and Signaling Capability• Evolution from CGN to NGN
NGN Focus Group
• ITU-T Director launched NGN Focus Group at June 2004• Almost every two month meeting : 6, 7, 9, 11/2004 and 2, 4, 6/2005
WG Area Deliverables
WG 1
SR (Service Requirements)
NGN Scope, Releases 1 / General Requirements, Servie and Capability, Mobility Services and Capabilities
WG 2
FAM (Functional Architecture, and Mobility)
Req. and Architecture, Functional Req. for NGN Mobility, Functional Req. for Soft Router
WG 3
QoS (Quality of Services) TR-123.qos, TR-msnniqos, TR-NGN.qos, TR-
NGN.NHNperf, TR-e2eqos.1, TR-enet, TR-atmipa, TR-racs, TR-ipaqos
WG 4
CSC (Control & Signalling)
TRQ.IP QoS.SIG.CS1
WG 5
SeC (Security Capability) NGN Security Framework
WG 6
Evol (Evolution) Evolution of Networks to NGN, PSTN evolution to NGN
WG7 FPBN (Future Packet-based Network)
Future Packet Network requirements
2. NGN Standardization
1222.04.23 WTSA 2004. 7 October, Florianopolis Brazil
WG Title Current Draft TargetDate
Release Status
1 NGN Scope FGNGN-OD-00037 1Q05 1 D
1 Services & Capabilities FGNGN-OD-00038 1Q05 1 D
1 Mobility Services & Capabilities TBD 1Q05 1 P
1 NGN Release 1 general requirements FGNGN-OD-00036 2Q05 1 D
1 NGN general requirements (release-independent requirements)
TBD 2Q05 RI P
1 NGN general services and capabilities (release independent)
TBD 2Q05 RI P
D
2 Requirements & Architecture for NGN FGNGN-OD-00035 1Q05 1 D
2 Functional Requirements for NGN Mobility
FGNGN-OD-00042 1Q05 1 D
2 Functional Requirement for Soft Router FGNGN-OD-00043 TBD 2 D
2 Customer Manageable IP Network FGNGN-OD-00044 TBD 2 D
NGN Focus Group2. NGN Standardization
Deliverables on Service Requirements and Architecture
1322.04.23 WTSA 2004. 7 October, Florianopolis Brazil
3 A QoS control architecture for Ethernet-based IP access networks (TR-123.qos)
FGNGN-OD-00010 Feb. ’05 1 D
3 Multi Service Provider NNI for IP QoS (TR-msnniqos)
FGNGN-OD-00027 Feb. ‘05 1 D
3 General aspects of QoS and network performance in NGN (TR-NGN.QoS)
FGNGN-OD-00045 Feb. ‘05 RI D
3 Network performance of non-homogeneous networks in NGN (TR-NGN.NHNperf.).
FGNGN-OD-00025 Feb. ‘05 RI D
3 Requirements and framework for end-to-end QoS in NGN (TR-e2eqos.1)
FGNGN-OD-00032 July ‘05 1 D
3 A QoS architecture for Ethernet networks (TR-enet)
FGNGN-OD-00026 July ‘05 1 D
3 A QoS control architecture for ATM-based IP access networks (TR-atmipa)
TBD July ‘05 1 P
3 Resource and admission control sub-system (TR-racs)
FGNGN-OD-00031 July ‘05 1 D
3 A QoS Framework for IP-based access networks (TR-ipaqos)
FGNGN-OD-00033 July ‘05 1 D
3 Performance measurement and management for NGN (TR-pmm)
FGNGN-OD-00024 May ‘05 1 D
NGN Focus Group2. NGN Standardization
Deliverables on Quality of Services
1422.04.23 WTSA 2004. 7 October, Florianopolis Brazil
4 TRQ.IP QoS.SIG.CS1 FGNGN-OD-00030 TBD TBD D
5 NGN Security Framework FGNGN-OD-00034 TBD TBD D
6 Evolution of Networks to NGN FGNGN-OD-00039 1Q05 1 D
6 PSTN Evolution to NGN FGNGN-OD-00040 1Q05 1 D
7 Problem Statement FGNGN-OD-00028 4Q04 TBD D
7 Requirements FGNGN-OD-00029 2Q05 TBD D
7 High Level Architecture TBD 3Q05 TBD P
7 Candidate Technologies TBD 3Q05 TBD P
NGN Focus Group2. NGN Standardization
Deliverables on Signaling, Security, Migration and Future
1522.04.23 WTSA 2004. 7 October, Florianopolis Brazil
A NGN is a packet-based network able to provide 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.
Definitionof NGN(DraftRec.
Y.2001)
Target Standards Area
Generalized Mobility Convergence btw. Fixed & Mobile
Unrestricted Access Open Access I/F
Separation Services with Transport Architecture and Open API
QoS-enabled Transport
Multiple-BroadbandManageable Broadband
Definition & Features of NGN
3. Key Features
1622.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Management
Transport Adaptation
Transport
CDR
Transport Resource / Policy Control Function
TMGF
SGF
Transport Resource &
Enforcement Functions
TrafficMeasurement
Function
PGF
CCF
T. Authentication &Authorization
Function
Mobility Support Function
T.Network Access Control Function
AMGF
TerminalFunction
Access Relay Function
ProxyFunction
Session & C
all Control
Application
CDR
CDR
CDR
CDR
CDR
CDR
S.Authentication & Authorization Function
Application Gateway Function
Application Server Function(may include own Authentication, Authorization and Accounting)
Charging Collection Function (CCF)
Media Resource Control Function MGCF?
Session Control Function PGCF
EMS
NMS
Session Control ProxyFunction
All lines of this type attach to the corresponding input line at the CCF within session & call control
Scope of NGN
Netw
ork Border Other NGN
other IP MMNetwork
(e.g. IMS)
PSTN/ISDN
Internet
Connection point
T.Network Access Process Function
Packet Transport Function
MediaResource
ProcessingFunction
T-1
T-3T-20
T-7
T-4
LS FunctionUser Profile DB Function
Registration Function
T-6
T-8
T-9
T-13
T-12
S-14
T-11
T-15
T-16
T-18
S-1
S-4
S-9
S-10
S-11 S-12
S-13
S-17
S-18
A-1
A-2
Functional Architecture Model3. Key Features
1722.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Customer Manageable Capability3. Key Features
Subscriber Management
AAAAAA
Remote Access SwitchRemote Access Switch
MetroSwitchMetroSwitch
NNIxUNIxUNIyUNIz NNIy NNIy
C/M-Plane
U-Plane
AccessGatewayAccess
Gateway
Service Management/Call Center
QoS/SLA Management
Soft SwitchFunctions
Service ControlService Control
FCAPS Management
Routing, Signaling, OAM
Addressing, NamingAddressing, Naming
Signaling, OAMSignaling, OAM
Ingress LERIngress LER
Edge BE RouterEdge BE Router
Edge MCUEdge MCU
L1/L2 NodeL1/L2 Node
Core LSRCore LSR
Core BE RouterCore BE Router
Core Multicast NodeCore Multicast Node
L1/L2 NodeL1/L2 Node
Egress LER/GWEgress LER/GW
Edge BE RouterEdge BE Router
Edge MCU or GWEdge MCU or GW
L1/L2 Node/GWL1/L2 Node/GW
VariousServer
Network
ExistingWireline/WirelessNetwork
PSTN/Cable/TVNetwork
NNIz
Manageable NGN Network
DSLAM/ONUDSLAM/ONU
CustomerPremisesNetwork
CMTSCMTS
• Capabilities to support user manageability on IP network. • Users can allocate, configure, control, and manage the resources of NGN Network elements
1822.04.23 WTSA 2004. 7 October, Florianopolis Brazil
CNAN ANCPN CPNTE TEUser User
Network Performance for NGN
Quality of Service for NGNQoE QoE
Man-Machine Interface
Man-Machine Interface
Network Interface
Network Interface
General reference configuration for NGN QoS, NP and QoE
Quality of Experience
Quality of Service Network Performance
User oriented Provider oriented
User behaviour attribute
Service attribute Connection/Flow element attribute
Focus on user-expected effects
Focus on user-observable effects
Focus on planning, development (design), operations and maintenance
User subject Between (at) service access points
End-to-end or network elements capabilities
QoS Aspects of NGN3. Key Features
1922.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Mobility Aspects of NGN3. Key Features
Mobility
ServiceContinuity
ServiceDiscontinuity
SeamlessHandover
Handover Roaming Portability
NGN CN
NGN CN
AccessNetwork
AccessNetwork
AccessNetwork
AccessNode
AccessNode
AccessNode
IntermediateNode
IntermediateNode
MobileTerminal
Border(Gateway)
Node
BorderNode
BorderNode
Border(Gateway)
Node
Border(Gateway)
Node
IntermediateNode
MobileTerminal
MobileTerminal
BorderNode
BorderNode
AccessNode
MobileTerminal
FixedTerminal
(1)
(2)
(3)
(4)Mobile
Terminal
(4)
NNI
Intra-AN Mobility
Inter-AN Mobility
Inter-TE Mobility
Inter-TE Mobility
Inter-CN Mobility
2022.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Evolution Aspects of NGN3. Key Features
• 4 Scenarios for PSTN evolution to NGN
P S N
PBX43AN42
AG41 New AG
PBX23AN22
AG21 New AG
TG TG
C S
LE3
UAM31
AN32
PBX33
LE1
UAM11
AN12
PBX13
LE1
UAM11
AN12
PBX13
LE4
UAM41
AN42
PBX43
LE3
UAM31
AN32
PBX33
LE2
UAM21
AN22
PBX23
TETETE
TETETE
SG
UAM11
AN12
PBX13
LE1
UAM31
AN32
PBX33
LE3TE TETE
UAM21
AN22
PBX23
LE2
UAM41
AN42
PBX43
LE4
UAM11
AN12
PBX13
LE1
UAM31
AN32
PBX33
LE3
UAM21
AN22
PBX23
UAM41
AN42
PBX43
LE4
CS
PSN
TG TG
SG SG
LE2
3rd Scenario 4th Scenario
2122.04.23 WTSA 2004. 7 October, Florianopolis Brazil
NGN stands for Next Generation, but targeted for Near Generation NGN could be value added framework for all players : Users, Operators, Providers and Regulators etc. NGN could be evolved from Current Generation Network NGN could be basement for making convergence world (real Telecommunication World) NGN Standards could be Globalize rather than Localize boosting global village and shorten digital divide ITU-T could be centre of NGN standards
TDM basedNetwork
Packet basedNetwork
CGN
MobileAccess
FixedAccess
Broadcasting Net.
BBX-castingMM
PacketBased
Tele-Broadconv.
Network
Next GN
FixedMobileConv.
BBAccess
QOSMobility
TDM basedNetwork
Packet basedNetwork
Near GN
FixedMobileConv.Access
Broadcasting Net.
Standards for Near Generation, not Next
4. Future Issues
2222.04.23 WTSA 2004. 7 October, Florianopolis Brazil
Transport
Services
Telephone Services
Data Services (WWW, e-mail, etc)
Video Services (TV, movie, etc)
NGN - Convergence Model
ACCESS ACCESSCORE
xDSL Optic
Ethernet or others
Future Packets (?)
API
Future Issues of NGN Standardizations
IMS Beyond IMS
NGNRelease 1
NGNRelease 2
NGNRelease 3
Recommendations &Technical Reports
Rec. Y.NGN-FRM
Rec. Y.NGN-CMIP
TR. 123.qosTR. NGN.qos
Rec. Y.NGN-MOB
TR. atmipa
TR. enet
TR. e2e.qos.1
FG NGN Standards
• NGN could be infrastructure for Broadband Services/Applications• NGN could be framework for “Convergence” : F↔M T↔B
4. Future Issues
2322.04.23 WTSA 2004. 7 October, Florianopolis Brazil
NGNRelease 3
• Target dates : Realization of NGN• Services and Capabilities (include Network and Control Capability)• Architecture and their components• Specifications for Interfaces, etc.
NGNRelease 2
I/F 1End of 2005 (TBD)
•Services & Capabilities : S&C 1•Functional Arc. & Spec. : FA&S 1•IW and Interconnection : IAI 1•Migration : MIG 1
I/F 2End of 2006 (TBD)
•S&C 2 = S&C 1+ A2•FA&S 2 = FA&S 1 + B2•IAI 2 = IAI 1 + C2•MIG 2 = MIG 1 + D2
(?)
•FPS Based (?)
Development of NGN Releases
4. Future Issues
NGN Release 1
2422.04.23 WTSA 2004. 7 October, Florianopolis Brazil
UsersTerminals /Appliances
ServiceProviders
ProgramProviders
NGN Infrastructure
Content-based Delivery Network Infrastructure Service Broker Infrastructure Information Broker Infrastructure
ConvergenceIntegrationMobility (Uniq. ID)
Simplified Realization Model of NGN
5. Conclusion
SERVICE
BRK
INF
BROKER
2522.04.23 WTSA 2004. 7 October, Florianopolis Brazil
NGN : Nothing new, but upgrading, adding Value
5. Conclusion
Up-gradingCurrent
Infrastructure
Next Generation-Water ParkCurrent Generation-Beach
AddingValue
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