ETSI

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ETSI3GPP NGN ACTIVITIES
ETSI TISPAN 3GPP NGN WORKSHOP
Workshop summary conclusions on
based on consensus, as a way forward to enable
the reuse of IMS in NGN.
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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

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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

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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
• Issues
• Simulate existing PSTN/ISDN services
• Presence extension to support PSTN/ISDN users
• NGN QoS Requirements
• Leading WG CN1
• Involved WG CN3, CN4

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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

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3GPP NGN Dependencies and Priorities
EXAMPLE
http//www.3gpp.org/TB/Other/IETF.htm
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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