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TISPAN_NGN Project plan

Martin Niekus mniekus@bell-labs.comAlain Sultanalain.sultan@etsi.org

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Agenda

1. Approval of agenda and Documents2. Workshop objectives3. NGN (Release 1) Architecture status4. IMS Architecture and R6 & R7 status5. Review of the NGN-IMS issues & status6. Fixed Access to IMS issues/discussion7. Backbone issues/Interco schemes8. Session Border Controllers concept9.9. Current activities and work planCurrent activities and work plan10.Next steps/Future cooperation11.Any other issue12.Wrap-up/closure

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Introduction of a Work Plan in TISPAN

Using the same methodology as in 3GPP, a Work Plan is about to be introduced in TISPAN in order to:

Provide a top-down view of the system being defined by TISPAN

Identify, dispatch and coordinate the work between all TISPAN Working Groups

Keep track of all the progress being done in the different Working Groups so that global decisions can be taken, e.g. freezing date and content of each TISPAN NGN Release

Identify risks of delay and dependencies between tasks, and from external bodies (e.g. 3GPP)

Collect the information on all past and present work, thus providing a tool to retrieve all past achievements

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Introduction of Work Plan in TISPAN

Commonalities between TISPAN and 3GPP Work Plans: The master is in MS Project and output copies are provided

in different formats (mainly PDF and Excel) Two ways of interactions are needed:

TISPAN to Work Plan: the WG chairs and rapporteurs provide periodic updates to ETSI to maintain the WP (level of completion, new tasks, etc)

Work Plan to TISPAN: • At WG level: ETSI provides clear view of the items to be progressed

by each WG • At plenary level: a summary of the overall progress (possibly via a

slide show) in presented to the plenary

Differences between TISPAN and 3GPP Work Plans: 3GPP Work Plan lists all the (independent) 3GPP Rel-6 and 7

Features whereas TISPAN Work Plan lists all the necessary modules needed to define the TISPAN Rel-1 system

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TISPAN Approach to Work Planning

The classical Stages 1/2/3 approach (ITU I.130 methodology) is supposed to be adopted with same “flexibility” as in 3GPP, i.e. Stage 2 can be started even before “deep freeze” of Stage 1 and the same applies between Stage 3 and 2

Stage 1: The first step is to complete the overall stage 1 document, DTR/TISPAN-

01025-NGN-R1, identifying clearly the TISPAN-specific stage 1 requirements

Stage 2: The second step is to complete the overall stage 2 document,

DES/TISPAN-02007-NGN-R1. As a result of WI 02007, the work is dispatched to the different Working

Groups, allowing them to work in parallel to define the detailed specifications of the network parts

Stage 2 documentation should clearly reflect which subsystems and protocols are specific to TISPAN and which ones are re-used from external bodies, in particular 3GPP.

Finally, once the big lines are clear, then detailed Stage 2 and the Stage 3 work can be progressed in parallel.

Designed to support the cooperation with 3GPP

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Content of the proposed first draft of the TISPAN Work Plan

As TISPAN work is already well advanced, the Work Plan goes one step further, i.e. it allocates tasks to: Define each identified subsystems (i.e. NAS, RACS, IMS,

PES, Transport and Terminal aspects) and inter-subsystems aspects

Define the different transverse aspects (i.e. Applications, Security, OAM, Codec, Testing)

Define miscellaneous and study items, grouped into “Background” and “specific issues”, like “terminology”, “strategy”, “QoS”, “capabilities”, etc.

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Top view of the proposed Work Plan

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Dates and milestones

High-level Rel-1 work item approval planning: TISPAN#6:

• Requirements, High-level architecture, Immediate messaging, Early simulation services, Early protocols, Enum privacy.

TISPAN#7:• Detailed architecture (NASS, RACS), Additional simulation

services, Security overview, Congestion control.

TISPAN#8: • WLAN, SIP & SDP,, Security risk analysis and architecture,

Multimedia QoS, PSTN/ISDN Emulation, NGN user data.

TISPAN#9:• Single sign-on,

• Cut-off load for R1 (To be confirmed)

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Next steps for TISPAN Work PlanThe initial “draft” work plan will be presented

and reviewed at TISPAN#6 so that the following refinements are included The deliverables associated to each task need to

be reviewed. The protocols, presently listed together in a

“protocols” place holder task, need to be dispatched to the different tasks.

The exact timing of freezing each Stage should be agreed.

The Work plan will be progressed in the next TISPAN steering group call

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Preliminary draft (1/4)

Annex: Preliminary draft

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Preliminary draft (2/4)

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Preliminary draft (3/4)

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Preliminary draft (4/4)