Liaison statement
DMM WG Response to 3GPP CT4 on LS CP-173160 (New Study Item on User Plane Protocol in 5GC )

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State Dead
Submitted Date 2018-07-07
From Group dmm
From Contact Sri Gundavelli
To Group 3GPP-TSGCT-CT4
To Contacts georg.mayer.huawei@gmx.com
3GPPLiaison@etsi.org
Cc Dapeng Liu <maxpassion@gmail.com>
Terry Manderson <terry.manderson@icann.org>
Distributed Mobility Management Discussion List <dmm@ietf.org>
Sri Gundavelli <sgundave@cisco.com>
Suresh Krishnan <suresh@kaloom.com>
Response Contact Sri Gundavelli <sgundave@cisco.com>
Dapeng Liu <maxpassion@gmail.com>
Suresh Krishnan <suresh@kaloom.com>
Technical Contact Sri Gundavelli <sgundave@cisco.com>
Purpose In response
Attachments (None)
Liaisons referred by this one CP-173160: New Study Item on User Plane Protocol in 5GC
Body 
Dear Georg & CT4 Group,

Thank you for your Liaison request (Reference: [1572] CP-173160), sharing
information on the status of the CT4 study item on user-plane protocol in 5GC.
The IETF DMM working group acknowledges your request and would like to share
the following update.

The DMM working is currently reviewing various proposals on approaches for
realizing optimizations in mobile user-plane. These proposals include protocol
specifications based on new/existing protocols, and proposals covering
requirements/analysis/comparison of various approaches. At this point of time,
some of these documents are working group documents and some are individual
submissions and which are yet to be adopted as working group documents. The
working group is actively discussing these proposals and making good progress.
Based on the working group interest, feedback charter-scope, the working group
may choose to adopt some of these work items as working group documents and
will move them on standardization track.

We also would like to state that the DMM working group will not be in a
position to pick a single approach/solution as THE approach for user-plane
optimization. Most likely the working group may standardize more than one
approach, but will characterize each of these approaches based on its technical
capabilities and limitations. This approach would be consistent with the
approach that IETF took with IPv6 transitioning work, where IETF standardized
multiple approaches including DSLite, NAT64, Gi-DSLite and other approaches.

Finally, IETF would like to point 3GPP to the following documents under
consideration.

http://www.ietf.org/id/draft-bogineni-dmm-optimized-mobile-user-plane-01.txt
(Individual submission)
https://www.ietf.org/internet-drafts/draft-hmm-dmm-5g-uplane-analysis-00.txt
(Individual submission)

Other Related Documents:
https://www.ietf.org/id/draft-ietf-dmm-srv6-mobile-uplane-02.txt (Working group
document)

Link to DMM Pages:
https://datatracker.ietf.org/wg/dmm/documents/

Please let us know if you need any additional information.

Regards
Dapeng Liu & Sri Gundavelli
(Chairs for DMM Working Group)