Re: [DMM] New Liaison Statement, "CP-173160: New Study Item on User Plane Protocol in 5GC"

[Arashmid Akhavain <[e-mail]>]

Hi Sri,

We might also want to add draft-camarillo-dmm-srv6-mobile-pocs-00
under "Related Documents".

Also, we might want to say something like:
"Although we will NOT pick a particular approach, 
we will be ready to provide further assistance to 3GPP regarding 
the technical details of different candidates."

So, what happens next? We wait for their reply? 

Cheers,
Arashmid

> -----Original Message-----
> From: dmm [mailto:[e-mail]] On Behalf Of Sri Gundavelli
> (sgundave)
> Sent: 06 July 2018 13:49
> To: [e-mail]
> Subject: Re: [DMM] New Liaison Statement, "CP-173160: New Study Item on
> User Plane Protocol in 5GC"
> 
> We plan to send the following response to 3GPP CT4.  If you have any quick
> comments/corrections/suggestions, please let us know in a day.
> 
> 
> 
> ³
> Thank you for your Liaison request (Reference: CP-173160) and for sharing
> the information on the status of the CT4 study item on user-plane protocol
> for 5GC. The IETF DMM working group wants to acknowledge your request
> and want to share the following update.
> 
> IETF DMM working is currently reviewing various proposals on approaches
> for realizing optimizations in user-plane for mobile packet core. 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 yet to be
> adopted as working group documents.  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 at that time will seek
> feedback from 3GPP.
> 
> 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.tx
> t (Individual submission)
> 
> https://www.ietf.org/internet-drafts/draft-hmm-dmm-5g-uplane-analysis-
> 00.tx
> t (Individual submission)
> 
> 
> 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.
> "
> 
> -----
> 
> 
> 
> 
> 
> 
> 
> 
> On 4/11/18, 11:16 AM, "Liaison Statement Management Tool"
> <[e-mail]>
> wrote:
> 
> >Title: CP-173160: New Study Item on User Plane Protocol in 5GC
> >Submission Date: 2018-04-11 URL of the IETF Web page:
> >https://datatracker.ietf.org/liaison/1572/
> >Please reply by 2018-07-20
> >From: Satoru Matsushima <[e-mail]>
> >To: Sri Gundavelli <[e-mail]>,Dapeng Liu
> ><[e-mail]>
> >Cc: Dapeng Liu <[e-mail]>,Terry Manderson
> ><[e-mail]>,Distributed Mobility Management
> Discussion
> >List <[e-mail]>,Sri Gundavelli <[e-mail]>,Suresh
> Krishnan
> ><[e-mail]> Response Contacts:
> >[e-mail],[e-mail]
> >Technical Contacts:
> >Purpose: For action
> >
> >Body: 1. Overall Description:
> >3GPP working group of CT4 (Core and Terminal) would like to inform the
> >IETF that CT4 has initiated a study item on user plane protocol in 5GC
> >for Release-16 of 5G phase 2 (see CP-173160).
> >
> >Based on the outcome from the IETF / 3GPP Coordination meeting at
> >IETF#100, 3GPP CT4 got aware that IETF DMM WG is currently working on a
> >possible candidate protocol for the 3GPP 5G user plane protocol.
> >
> >3GPP CT4 wants to emphasize that currently there is no related
> >evaluation ongoing in 3GPP. Nevertheless, a study item was approved for
> >such a study to start in the second half of 2018. The study will
> >evaluate between existing solutions within 3GPP and other protocols,
> >based on the Release
> >16 stage 2 (system architecture) requirements.
> >
> >3GPP CT4 would like to point IETF DMM to the following specifications
> >on GTP-U. The Release 16 stage 2 requirements are not yet known but it
> >is worth looking at latest GTP-U spec which will be evaluated through
> >the study as the existing protocol.
> >
> >€	[1] 3GPP TS 29.281 (V15.1.0): GPRS Tunnelling Protocol User Plane
> >(GTPv1-U)
> >
> >
> >Following technical report provides information of how 3GPP considered
> >GTP-U apply to user plane of 5G_ph1:
> >
> >€	[2] 3GPP TR 29.891 (V15.0.0): 5G System ­ Phase 1; CT4 Aspects
> >
> >
> >Furthermore, 3GPP would like to give the following general guidance to
> >IETF DMM, regarding user plane transport within 3GPP networks. These
> >are technical specifications that include also the necessary
> >information to understand which architectural, QoS, security-related
> >and high-level requirements GTP-U currently complies to within 5G_ph1.
> >
> >€	[3] 3GPP TS 23.501 (V15.0.0): System Architecture for the 5G System
> >€	[4] 3GPP TS 23.502 (V15.0.0): Procedures for the 5G System
> >€	[5] 3GPP TS 23.503 (V15.0.0): Policy and Charging Framework for the
> 5G
> >System
> >€	[6] 3GPP TS 33.501 (V0.6.0): Security Architecture (work in progress)
> >
> >2. Actions:
> >To IETF DMM:
> >ACTION: 	CT4 respectfully asks IETF DMM to provide any information
> that
> >may be relevant to the above CT4 work by July 2018.
> >
> >
> >3. Date of Next CT and CT4 Meetings:
> >CT4#83	26th Feb ­ 2nd Mar 2018	Montreal, CAN
> >CT#79	19th ­ 20th Mar 2018	Chennai, India
> >CT4#84	16th ­ 20th April 2018	Kunming, China
> >CT4#85	21st ­ 25th May 2018	Osaka, Japan
> >CT#80	11th ­ 12th June 2018	La Jolla, USA
> >CT4#85-bis	  9th ­13th July 2018	TBD, France
> >CT4#86	20st ­ 24th Aug 2018	TBD, USA
> >Attachments:
> >
> >    CP-180116
> >
> >https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2018-04-11-3gpp-t
> >sgc
> >t-ct4-dmm-cp-173160-new-study-item-on-user-plane-protocol-in-5gc-attach
> >men
> >t-1.doc
> >
> 
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