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World Class Standards

WG8 Specification Guidelines

TISPAN WG8 – 3GPP SA#5 Joint meeting Sophia Antipolis, May14th - 15th 2007

Source: Michael GeiplDeutsche Telekom AG

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Table of Contents

Motivation, Scope, Principles

Specification Methodology

Synergies with 3GPP SA#5 and ITU-T SG4

Status and Roadmap

Summary

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Motivation for WG8 Guidelines

In WG8's current NGN Management related work standard forming principles are being used implicitly.

Specification Guidelines are necessary to transform these implicitly existing principles to explicitly described principles.

WG8 Specification Guidelines should reflect and, if necessary, modify or unify explicit principles.

This means the basic driver and motivation for the evolution of WG8 Specification Guidelines are the currently running WG8 standardization activities in the area of NGN OSS.

The work on the Specification guidelines has an accompanying character to WG8's regular standard forming process.

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Scope of WG8 Guidelines (1)

The Guidelines put on record the WG8 internal way how to develop ideas to standards documents.

The basis of the Specification Guidelines document is a status-quo analysis of WG8's way to develop standards.

Implicitly existing steps of WG8

standardizationwork

Reflection, Consolidationand Transformation

Identification & Clarificationconcerning their purpose

Investigation, Analysis and Evaluation

of current methods

Explicit WG8methodology

steps

Consistent WG8 internal Specification

Guidelines

Consideration of provedexisting methodologies

Documentation of the results in TR 188 007

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Scope of WG8 Guidelines (2)

The Guidelines document tracks how the WG8 specifications are currently produced, i.e. it describes the ongoing, and it will direct the future work.

The existing WG8 methodology will be compared with well-known existing methodologies (e.g. 3GPP IRP, ITU-T M.3020, TMF NGOSS).

Non-scope:

Guidance for other ETSI WGs or standardization bodies than TISPAN WG8,

Definition of a new standardization process in the sense of refining or formalizing the guidelines.

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Principles of WG8 Guidelines (1)

Three-step approach for the development of standards:

Step 2: Technology Independent Modelling

Step 3: Technology Dependent Modelling

Step 1: Definition of Requirements

GuidelinesFrom an idea to a standard document:

Informal definition of proceedings

External Sources

3GPP SA5

ITU-T SG4

TMF NGOSS

Internal Sources

WG1: Services

WG2: Architecture

WG3: Protocols

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Principles of WG8 Guidelines (2)

Reuse of existing methodologies:Where it is possible, parts (e.g. templates) of existing methodologies (e.g. 3GPP IRP, ITU-T M.3020, TMF NGOSS) will be taken over (by reference or by copy), or adapted.

Objects of WG8 standardization:Specification of NGN OSS Service Interfaces.

Modelling Technologies:UML is the preferred modelling language.

ETSI Documentation of standards:Statements on document cardinality (single/multi-part), document type (TS), and sequential vs. concurrent elaboration of documents.

Provider

User

NOSI

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WG8 Specification Methodology (1)

GuidelinesFrom an idea to a standard document:Informal definition of proceedings

Kind a: Generic Activities

ContextsE.g. Subscription management, assurance, billing, fulfilment, NRM, …

Kind b: Context Specific Activities

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WG8 Specification Methodology (2)

Step 2aTechnology Independent Modelling Formal Information Model (MIM) Reference models

Step 3aTechnology Dependent Modelling E.g. XML/WSDL,

CORBA/IDL, SNMP,CMIP

Step 1a Definition of Generic Requirements Requirements Scope and vision Architecture principles

GuidelinesFrom an idea to a standard document:Informal definition of proceedings

ContextsE.g. Subscription management, assurance, billing, fulfilment, NRM, …

Step 2bContext specific information model Integration with the MIM Technology independent NOSI

Step 3b Context specific and technology dependent models Context and tech. dep. NOSI

Step 1bContext specific requirements Context specific requirements Context specific scope

NOSI NOSI

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Synergies with 3GPP and ITU-T (1) Foundation:

ITU-T SG4 Q.9: Recommendation M.3020 - Management Interface Specification Methodology (MISM).

3GPP SA5: TS 32.150, TS 32.151, TS 32.152 - Integration Reference Point (IRP) Concepts, Definitions, Templates, UML.

Enabler:

WG8 specifications follow a three-step-approach including basically the same phases as described in 3GPP and ITU-T.

WG8 intends to use as much as possible the results of the existing joint 3GPP/ITU-T work on specification methodology.

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Synergies with 3GPP and ITU-T (2) Requirements phase:

WG8 has decided to use the new M.3020 Requirements template (Annex A).

WG8 evaluates the final version of the 3GPP/ITU-T Requirements template, and will give feedback on this issue if necessary.

Currently requirements will be derived from use cases in WG8. The final documentation of use cases is still under evaluation.

Already existing WG8 Requirements specifications or drafts (NRM, SuM) should be gradually updated to follow the new template.

New WG8 Requirements specifications must follow the new template.

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Synergies with 3GPP and ITU-T (3) Technology-independent Information Model/Service phase:

WG8 aims at using the new 3GPP/ITU-T Information Service (IS) template (TS 32.151) and UML notation for these purposes.

WG8 will provide feedback to the final version of the 3GPP/ITU-T IS template if necessary.

In the latest WG8 drafts of the SuM IM and NRM IS at least parts of this template have already been used.

Co-operation:

Participation in 3GPP/ITU-T audio conferences on methodology.

Feedback to issues and results of 3GPP/ITU-T methodology work.

Liaison statements.

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Status and Roadmap

Current status of WG8 Specification Guidelines document:

Table of Contents and Scope are agreed.

Contribution to the next TISPAN meeting: Proposal for further proceeding; Revised structure; Closer alignment with joint 3GPP/ITU-T work on specification methodology.

Further roadmap:

Draft available: September 2007

WG approval: December 2007

Publication: March 2008

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Summary

The WG8 Specification Guidelines describe the whole WG-internal way to develop NGN OSS Service Interface standards.

The guidelines are used to document the current proceeding of WG8 specification work, and to guide the future work.

The aim is not to invent a completely new methodology, but to use as much as possible already existing specification methodologies from well-known standardisation bodies.

First-class candidate is the joint activity of 3GPP SA5 and ITU-T SG4 on interface specification methodologies.

WG8 evaluates the results of joint 3GPP/ITU-T work with respect to use in its Specification Guidelines document.

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