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

["Sri Gundavelli (sgundave)" <[e-mail]>]

Hi Arashmid,

Thanks for the feedback.

I have added a link to the DMM WG pages and it has links to all the DMM
documents. I think that should be OK, we don’t have to explicitly list out
every single I-D at this stage. As we move forward and based on WG
discussions/progress, we can provide more detailed feedback on each
document. I suggest we keep this simple for now.



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

This is just a response to the LS; more an information exchange on the
status/progress.



Regards
Sri




On 7/6/18, 1:56 PM, "Arashmid Akhavain" <[e-mail]>
wrote:

>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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