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Liaison statement
LS OUT on User Plane Analysis

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State Posted
Submitted Date 2018-07-26
From Group 3GPP-TSGCT-CT4
From Contact Sridhar Bhaskaran
To Groups dmm, IETF
To Contacts The IETF Chair <>
Sri Gundavelli <>
Dapeng Liu <>
Cc Dapeng Liu <>
The IESG <>
Terry Manderson <>
Sri Gundavelli <>
The IETF Chair <>
Distributed Mobility Management Discussion List <>
Suresh Krishnan <>
Response Contact
Purpose For information
Attachments C4-185491-LSOUT-IETF-GTP-U
1. Overall Description:
CT4 reviewed the IETF draft-hmm-dmm-5g-uplane-analysis-00 based on the input
discussion paper submitted to CT4 in C4-185292. CT4 thanks IETF DMM for their
analysis. CT4 would like to provide the following initial feedback on the same.
CT4 intends to do further analysis and provide any additional feedback, if any,
in future. CT4 would like to emphasize that the evaluation criteria for the
user plane protocol study (FS_UPPS) in 5GC shall be defined by 3GPP CT4 and the
work has just now started in 3GPP.

2. Actions:
To IETF DMM Group.
CT4 kindly requests IETF DMM to take the above initial feedback into

3. Date of Next CT and CT4 Meetings:
CT4#86  20th – 24th Aug 2018    West Palm Beach, US
CT#81   10th - 11th Sep 2018    Gold Coast, Australia
CT4#86bis       15th - 19th Oct 2018    Vilnius, Lithuania