IEEE Next Generation
Service Overlay Network – P1903
(NGSON)
An enabler for an emerging vision for
future service networks
15 May 2009, Geneva
Rick Townsend, Huawei Technologies
Chair, IEEE P1903 (NGSON)
CONTENTS
• Overview of NGSON charter process
•Technical overview of NGSON
• Interactions with other bodies
• Summary and contact information
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 2
IEEE NGSON (P1903)
Feb-2007,Idea
published to
IEEE
Jan-2008,
NGSON SG
2nd meeting
Feb-2008, PAR
approved by
IEEE ComSoc
27-Mar-2008,
IEEE NesCom &
SASB approval!
IEEE ComSoc
Study Group Stage
May-2008,
WG 1st
meeting
Dec 2008,
WG 3rd
meeting
IEEE-SASB
NGSON (IEEE P1903) standardization
Working Group Stage
IEEE CAG
Sep-2007，
NGSON SG
1st meeting
Jan-2008，
PAR submitted
to IEEE-SA
Feb-2008, PAR
approved by
IEEE-SA CAG
Mar-2008,
6 companies
support NGSON
Sep-2008,
WG 2nd
meeting
Mar-2009,
WG 4th
meeting
Participants:
CMCC, KT, ETRI, Telcordia, RITT,
Huawei, ZTE, etc.
The idea of NGSON (Next Generation Service Overlay Network) was published to IEEESA CaG by Huawei in Feb, 2007. As the originator of NGSON, Huawei facilitated this
project, and gained supports from the ICT industry.
3
The NGSON PAR*
5.2 Scope:
This standard describes a framework of Internet
Protocol (IP)-based service overlay networks and
specifies context-aware, dynamically adaptive, and selforganizing networking capabilities, including advanced
routing and forwarding schemes, and that are
independent of underlying transport networks.
*PAR – Project Authorization Request
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Some Definitions
“context-aware”
 (e.g., such as required QoS level, type of service such as
real-time vs. data, nature of data stream such as I-frame vs.
B-frame, and type of terminal such as TV HD monitor vs.
PDA)
“dynamically adaptive”
 (e.g., using locally derived information to discover, organize,
and maintain traffic flows in the network within a local area
network)
“self-organizing networking capabilities”
 (e.g., developing network structures based on the needs of
the customers and the capabilities of existing network
structures)
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 5
The NGSON PAR (2)
5.4 Purpose:
The purpose of this standard is to enable
network operators, service/content providers,
and end-users to provide and consume
collaborative services by the deployment of
context-aware, dynamically adaptive, and selforganizing networking capabilities.
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 6
The NGSON PAR (3)
5.5 Need for the Project:
The amount of services and applications and
their interaction are increasing at an exponential
rate. This standard is needed to provide a better,
more efficient way of providing these services
and applications by means of context-aware,
dynamically adaptive, and self-organizing
networking capabilities.
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 7
Document Status
White Paper
Requirements
Architecture
Technical Specs
Draft
Frozen
4Q08
2Q09
2Q09
Released
1Q09, Rel1
2Q09
1Q10
3Q10
Current work
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 8
Architectural Intent
Our intent is not to duplicate or re-do any work
associated with existing architectures or the
functions associated with those architectures, but
to use what is available.
We intend to work outside of areas (but in
cooperation with) currently being done by such
bodies as ITU-T, TISPAN, OASIS, ATIS SON and PTSC,
OMA, PARLAY, 3GPP, TMF.
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 9
ITU OSE
Aspect
OSE
NGSON
Intention
Define an open service
environment framework for NGN
with the aim to enable
enhanced, flexible service
creation and provisioning.
[Y.2234]
Enable network operators,
service/content providers, and endusers to provide and consume
collaborative services
Framework
Provides an open service
environment for NGN and
enables NGN applications to
implement enhanced services
that make use of NGN
capabilities.
A service overlay network based on IP
network
Specifies context-aware, dynamically
adaptive, and self-organizing
networking capabilities, including
advanced routing and forwarding
schemes, and that are independent of
underlying transport networks.
IMS
Aspect
IMS
NGSON
Goal
• Constructing a core network
architecture to address the
issues of service access and
control
• Constructing a service overlay
network architecture to help
service interaction, collaboration,
management and service
composition
User
• User access agnostic
• Focus on the sharing of the user
data between services
• Centralized management of user
data
• Focus on the user's control.
Protocol
• SIP
• Few limitations on service
protocols
Service
• IP multimedia service (Voice,
Location, presence, IM etc）
• Telecom and internet services
TMF SDF
Aspect
SDF
NGSON
Goal
• Focuses on the definition of
each interface and details of
interaction,
• Define management interfaces
and the core elements needed
for service management
• Emphasis is on the
management aspects
• Constructing a service overlay
network architecture to help service
interaction, collaboration,
management and service
composition
User
• Establish a service delivery
framework based on SOA by
integrating all possible kinds of
network resource and service
capabilities
• Establish a framework of service
network overlay based on IP using
context-aware, dynamically adaptive
and self-organizing networking
capabilities
Use Case Issues
• At 8:59pm, everyone changes channels.
What happens to the network and how is
it controlled?
• At 3pm, the teenagers return home
from school and start numerous peer-topeer (P2P) networks. Which entity sets
up the P2P networks and manages them?
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Evolution Goals
Next generation: Loosely coupled service
network architecture
• Interconnect a large number of existing /
emerging services and enablers
• Enhance reusability of services / enablers
worldwide
• Cost-efficient creation of services
• Interoperability of service / network
operators, service providers worldwide …
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 14
Network Evolution
1st gen.: Traditional Silo architecture
PPS
SMS
PPS
800
2nd gen.: Centralized SDP solution
WWW
PPS
FTP
VPN
CTD TravelAgent UC
CTD TravelAgent
VAS
WWW / FTP / Travel
/ Bank / Securities...
SCP
PLMN
PSTN
SDP
INTER/INTRANET
Presence SM
CC
SDP
PLMN
Charge
CC
PSTN
INTER/INTRANET
Next Generation Service Overlay Network
Service Network
PPS VPN
CTD TravelAgent UC
CTD TravelAgent
Download / Travel / Bank / Securities...
SCP
SDP
SDP
PLMN
(GSM/CDMA/IMS…)
Presence
SM
CC
SDP
PSTN
(softSwitch...)
15 May 2009 – ITU-T SG13 / IEEE Workshop
Charge
CC
INTER/INTRA-NET
Slide 15
Key technologies (1)
• Self-organized networking
 Dynamically locate contents taking into account the location of
the user as well as his/her access conditions.
 Dynamically publish a range of services that may be accessed by a
user, based upon his/her profile, and interests.
 Dynamically (re)configure network devices, depending on the
traffic load conditions, the provisioning of additional content
servers, etc.
 Dynamically notify users about the efficiency of a Quality of
Service (QoS) and/or security policy.
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Key technologies (2)
• Service composition and interaction
 In order to respond to customer demand quickly and shorten
the service development cycle, service networks need to offer
an on-demand and flexible composition mechanism.
Dynamically compose the related basic services to meet the
requirement of users.
 Research a common service interaction protocol, provide a
solution for service interaction.
• Service accounting
 Based on service/resource rate registration, the system will
support real-time charge negotiation during the service
composition.
 Accounting will support intelligent charging based on service chain.
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Key technologies (3)
• Service & resource addressing
 When the number of applications & service is very large on service
network, NGSN will consider how quickly to discover target service for
service interaction and service composition.
 To provide a uniform resource search and access mechanism to
reduce the cost of different access protocol and un-structured resource
discovery.
 Address types of network layer & service layer have multiple
instantiations; in order to make services in heterogeneous networks and
domains interact directly, NGSN will research a uniform service
addressing mechanism.
• Context-aware service routing
 Research a new service routing based on the service addressing, it
can provide context-aware service routing according to service
provider’s policy. Service interaction and service management will be
benefited by this feature.
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Key technologies (4)
•
Service registration
 To support the context-based routing, the dynamic information
about services can registry or de-registry to NGSON.
• Service publication/discovery
 To facilitate the user or service creator to find the existing
services, NGSON provides a scalable way to obtain the
interfaces, SLA, QoS and other static information about services.
•
Mobility
 Include user mobility and the session continuity
 User change the attachment point across heterogeneous
network
 Handover from different service providers or different terminals
NGSON Collaborative Environment
Users
Providers
Consumer
Business process
Services
Components
Client
technologies
UI, Web, SIP
Service
composition
Composite
services,
IMS/Web services
Service
components,
Enablers
Under Autonomous Managed Environment
Networking Framework for collaborative Service plane, Network plane, Operations and
management plane capabilities.
NGSON
Capabilities of Service Operating
Framework
•Service Addressing, Routing
•Service interaction facilitation functions
•Discovery ,Registration
•QoS, Security/Trust
•Management and monitoring infrastructure
Capabilities for Network Elements
•Large scale distribution of services
•Context Awareness support
•Dynamic policy enforcement capability
•Self Organizing networking capability
•QoS control and monitoring
15 May 2009 – ITU-T SG13 / IEEE Workshop
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NGSON Framework Diagram
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Implementation Example of NGSON
Key Aspects:
Context awareness, addressing, routing,
discovery, registration, composition, self-organization etc.
Requirements (1)
• General functions
1) Addressing
2) Identifier
3) Standard interfaces
and protocols (2)
4) User privacy (2)
5) Interworking (2)
6) Mobility
(n) Following a subject
indicates number of
requirements for that
subject
• Network related functions
1) Support of network routing
2) Self-organization (3)
3) Adaptiveness
4) Identity
5) Resource virtualization (2)
6) Resource scheduling
•Operation and management
related functions
1)
2)
3)
4)
5)
6)
Manageability
FCAPS
Service management
Lifecycle management (2)
Inter-provider service
Open environment
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Requirements (2)
• Service related functions
1) Dynamic service routing (2)
2) Service routing (2)
3) QoS (3)
4) Registration
5) Registration and discovery
6) Registration / de-registration (4)
7) Service discovery (4)
8) Directory (2)
9) Negotiation
10) Service composition (5)
11) Billing of composite services
12) Charging and billing
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)
Seamless mobility support
Context awareness (9)
Self-organizing (5)
Adaptiveness
Dynamic auto-configuration
Security (3)
Authentication (3)
Service brokering
Service coordination (3)
Service collaboration
Virtualization
15 May 2009 – ITU-T SG13 / IEEE Workshop
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High Level Technical View of NGSON
• Provide more automated delivery capabilities keyed to the
self-organization of the services/applications of the overlay
network based on context awareness.
• Composing services/applications dynamically.
• Self-organize services/applications on an overlay to provide
simplified access by service providers and users.
• Allow a wide range of services/applications to be offered
through different networks to different devices using a range
of resources, all based on context awareness.
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Example: Dynamic Service Composition
Live news from CNN,,
A Dragon appears
Personalization
in the city hall..
service
Context service
User
Live news streaming
service
QoS negotiation
Service Router
Service Router
Service Router
TV guide service
NGSON
Service Router
Service Router
Network
info
Underlying networks
Initial setup
WiFi/Wibro
High bandwidth
Low bandwidth
WCDMA
VDSL
Liaison Opportunities
ITU-T
ETSI TISPAN
3GPP
TMF
ATIS SON
OMA
PARLAY
OASIS
NGN, OSE (Open Services Environment)
Core IMS, PES, NASS/RACS, IPTV
IMS
SDF, OA&M
Service creation, deliver, provisioning
OSE (OMA Service Environment), Service enablers
APIs
Open standards for a global information society, SOA
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 27
Challenges
• The area of service networks is going to get more and more
active in the standards arena and will need serious
coordination.
• For technical aspects (i.e., the network service/transport
folks), ‘context aware’, ‘dynamically adaptive’ and ‘selforganizing’ become technical challenges.
• Implementation and accounting methodologies become a
business challenges.
15 May 2009 – ITU-T SG13 / IEEE Workshop
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Summary
• Service interactions are getting more attention in
standardization work
• NGSON is taking an approach to services as shown in
this presentation.
• IEEE welcomes your participation in NGSON
15 May 2009 – ITU-T SG13 / IEEE Workshop
Slide 29
Where to find us
Email exploder for people interested in NGSON:
stds-P1903@ieee.org
For questions:
ricktownsend@comcast.net
Website:
http://grouper.ieee.org/groups/ngson
Thank you!
15 May 2009 – ITU-T SG13 / IEEE Workshop
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