Liaison statement
Reply LS to liaison statement on requesting support for defining next generation protocols

3GPP TSG SA thanks ETSI ISG NGP for their liaison statement on requesting
support for defining next generation protocols. The liaison statement was
discussed in 3GPP TSG CT, 3GPP TSG RAN as well as 3GPP TSG SA. This reply LS
summarizes the outcome of all these discussions.

Due to the short time frame for 3GPP work on 5G (i.e. Rel-15 and Rel-16) it
does not seem feasible that 3GPP starts a new study to create completely new
protocols based on protocol requirements or related solutions from ETSI ISG NGP.

Within CT WGs, protocol requirements for 5G are currently being studied. While
it is not feasible for 3GPP to consider completely new protocols, adaptations
to existing protocols are within scope of this study.  ETSI ISG NGP member
companies are therefore invited to consider bringing their input by means of
company contributions during the next few months to the 3GPP CT WGs directly,
as long as these requirements are within the scope of the ongoing Rel-15/Rel-16
work.

3GPP would not like to initiate or coordinate communication between ETSI ISG
NGP and IETF but of course we welcome any steps to enhance solutions used by
3GPP.

3GPP would be happy to help investigate more significant changes to the
protocols used by 3GPP along the lines of the provided requirements and
solutions from ETSI ISG NGP in a timeframe beyond the current Rel-15 and Rel-16
work in 3GPP.