1. ETSI–3GPP NGN ACTIVITIES
NGN WORKSHOP, JUNE 2004
6/22/2004
ETSI TISPAN – 3GPP
NGN WORKSHOP
Workshop summary conclusions on
ETSI–3GPP NGN ACTIVITIES
… based on consensus, as a way forward to enable the reuse of IMS in NGN.

2. ASSUMPTIONS
ETSI TISPAN IP Multimedia Subsystem (IMS) is based on 3GPP Specifications
3GPP is not defining the NGN but will work with TISPAN to establish a common approach to enable IMS as an NGN platform
TISPAN will define NGN session control using IMS as a platform

3. 3GPP – TISPAN NGN Cooperation
3GPP NGN dependencies & priorities monitored by TISPAN
Coordination by TISPAN and communicating to TSG SA & CN on NGN issues
TISPAN and 3GPP members need to coordinate to drive the NGN platform standardization activities
Interested 3GPP Individual Members shall drive WIDs, as appropriate, within the 3GPP Working Groups
It is the responsibility of 3GPP Individual Members to drive the NGN platform standardization activities within 3GPP WGs

4. Potential WIDs within 3GPP
WID – System impact from providing IMS services via fixed broadband
Issues
SIP sessions tunneled through NATs
Presence extension to support PSTN/ISDN users
NGN Charging Requirements
Simulate existing PSTN/ISDN services
Leading WG: SA2
Involved WG: SA1, SA3, SA5
WID – Protocol impact from providing IMS services via fixed broadband
NGN QoS Requirements
Leading WG: CN1
Involved WG: CN3, CN4

5. List of existing Work Items with potential interest
All-IP Feasibility Study
Architectural Enhancements for E2E Quality of Service
WLAN - UMTS Interworking
QoS Improvements
Gq interface specification for Dynamic Policy control enhancements
Interworking aspects and migration scenarios for IPv4 based IMS Implementations
Interoperability and Commonality between IMS using different "IP-connectivity Networks“
IP flow based bearer level charging

6. 3GPP NGN Dependencies and Priorities
EXAMPLE

7. SUMMARY 3GPP drives & maintains IMS core specifications
Single set of specs (for Core IMS) is the goal
TISPAN develops independent set of specifications, not regarded as in the IMS core;
TISPAN coordinates “3GPP NGN Dependencies & Priorities” on issue level
It is the responsibility for companies to contribute to 3GPP to introduce support for an NGN platform
Joint understanding of IMS platform requirements for NGN  approval within 3GPP
Other areas of cooperation of further discussion, e.g. WLAN