IEEE Next Generation Service Overlay Network – P1903

(NGSON)

An enabler for an emerging vision for future service networks

Rick Townsend, Huawei TechnologiesChair, IEEE P1903 (NGSON)

15 May 2009, Geneva

CONTENTS• Overview of NGSON charter process•Technical overview of NGSON• Interactions with other bodies• Summary and contact information

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3

IEEE NGSON (P1903)

The idea of NGSON (Next Generation Service Overlay Network) was published to IEEE-The idea of NGSON (Next Generation Service Overlay Network) was published to IEEE-SA CaG by Huawei in SA CaG by Huawei in Feb, 2007.Feb, 2007. As the originator of NGSON, Huawei facilitated this As the originator of NGSON, Huawei facilitated this project, and gained supports from the ICT industry.project, and gained supports from the ICT industry.

Participants:CMCC, KT, ETRI, Telcordia, RITT, Huawei, ZTE, etc.

NGSON (IEEE P1903) standardization

Jan-2008, NGSON SG 2nd meeting

Sep-2007 ，NGSON SG 1st meeting

Feb-2008, PAR approved by IEEE ComSoc

IEEE ComSoc

Feb-2008, PAR approved by IEEE-SA CAG

IEEE CAG

27-Mar-2008, IEEE NesCom & SASB approval!

IEEE-SASB

May-2008, WG 1st meeting

Mar-2008, 6 companies support NGSON

Study Group Stage Working Group Stage

Mar-2009, WG 4th meeting

Dec 2008,

WG 3rd meeting

Sep-2008,

WG 2nd meeting

Jan-2008 ， PAR submitted to IEEE-SA

Feb-2007,Idea published to IEEE

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 self-organizing networking capabilities, including advanced routing and forwarding schemes, and that are independent of underlying transport networks.

*PAR – Project Authorization Request

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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)

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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 self-organizing networking capabilities.

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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.

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Document Status

Draft Frozen ReleasedWhite Paper 1Q09, Rel1Requirements 4Q08 2Q09 2Q09Architecture 2Q09 1Q10Technical Specs 3Q10

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Current work

Architectural IntentOur 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.

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ITU OSEAspect 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 end-users 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.

IMSAspect 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 • Centralized management of user

data• Focus on the user's control.

• Focus on the sharing of the user data between services

Protocol • SIP • Few limitations on service protocols

Service • IP multimedia service (Voice, Location, presence, IM etc）

• Telecom and internet services

TMF SDFAspect 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-to-peer (P2P) networks. Which entity sets up the P2P networks and manages them?

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Evolution GoalsNext 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 …

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Network Evolution

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PSTNPLMN

PPS SMS PPS 800

VAS

INTER/INTRA-NET

WWW FTP

1st gen.: Traditional Silo architecture

PSTNPLMN

CTD

INTER/INTRA-NET

SM CCPresenceSDP Charge CC

SDP

WWW / FTP / Travel / Bank / Securities...

TravelAgent CTD TravelAgentUC

SCP

PPS VPN

2nd gen.: Centralized SDP solution

CTD

SM CCPresenceSDP Charge CCSDP

Download / Travel / Bank / Securities...

TravelAgent CTD TravelAgentUC

SCP

PPS VPN

PLMN(GSM/CDMA/IMS…)

PSTN (softSwitch...)

INTER/INTRA-NET

SDP

Service Network

Next Generation Service Overlay Network

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.

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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.

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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.

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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

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Consumer Business process Services Components

Client technologiesUI, Web, SIP

Service composition

Composite services,

IMS/Web services

Service components,

Enablers

Networking Framework for collaborative Service plane, Network plane, Operations and management plane capabilities.

NGSON

Capabilities for Network Elements•Large scale distribution of services•Context Awareness support•Dynamic policy enforcement capability•Self Organizing networking capability•QoS control and monitoring

Capabilities of Service Operating Framework

•Service Addressing, Routing•Service interaction facilitation functions•Discovery ,Registration•QoS, Security/Trust•Management and monitoring infrastructure

Users Providers Under Autonomous Managed Environment

NGSON Framework Diagram

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Implementation Example of NGSONKey Aspects: Context awareness, addressing, routing,discovery, registration, composition, self-organization etc.

Requirements (1)• General functions

1) Addressing2) Identifier3) 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

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• Network related functions1) Support of network routing2) Self-organization (3)3) Adaptiveness4) Identity5) Resource virtualization (2)6) Resource scheduling

•Operation and management related functions

1) Manageability2) FCAPS3) Service management4) Lifecycle management (2)5) Inter-provider service6) Open environment

Requirements (2)

13) Seamless mobility support14) Context awareness (9)15) Self-organizing (5)16) Adaptiveness17) Dynamic auto-configuration18) Security (3)19) Authentication (3)20) Service brokering21) Service coordination (3)22) Service collaboration23) Virtualization

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• Service related functions1) Dynamic service routing (2)2) Service routing (2)3) QoS (3)4) Registration5) Registration and discovery6) Registration / de-registration (4)7) Service discovery (4)8) Directory (2)9) Negotiation10) Service composition (5)11) Billing of composite services12) Charging and billing

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.

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Example: Dynamic Service Composition

Service RouterNGSON

Service Router

Service Router

Service Router

Service Router

Live news streaming service

Personalizationservice

Context service User

WiFi/Wibro WCDMAVDSL

Low bandwidthHigh bandwidthInitial setup

Underlying networks

Live news from CNN,,A Dragon appears

in the city hall..

TV guide service

QoS negotiation

Network info

Liaison Opportunities

ITU-T NGN, OSE (Open Services Environment)ETSI TISPAN Core IMS, PES, NASS/RACS, IPTV3GPP IMSTMF SDF, OA&MATIS SON Service creation, deliver, provisioningOMA OSE (OMA Service Environment), Service enablersPARLAY APIsOASIS Open standards for a global information society, SOA

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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 ‘self-organizing’ become technical challenges.

• Implementation and accounting methodologies become a business challenges.

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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

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Where to find us

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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!