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TR 29.892CT4
Study on User-Plane Protocol in 5GC

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V16.0.0 (Wzip)  2019/09  50 p.

WI Acronym:  FS_UPPS
Rapporteur:  Mr. Matsushima, Satoru

The present document studies possible candidate protocols for the user plane in 5GC based on Rel-16 stage 2 requirements. This technical report covers the following analysis:
  • List architectural requirements and key issues;
  • Identify the possible candidate protocols for user-plane including GTP-U as existing protocol, specified for Rel-15;
  • Define a list of evaluation criteria based on Rel-16 stage 2 architecture and procedures to evaluate the candidate protocols;
  • Evaluate the candidate solutions against the list of requirements and the potential benefits against the existing user plane solution in 5GS.

full Table of Contents for  TR 29.892  Word version:   16.0.0

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1  ScopeWord-p. 8
2  References
3  Definitions, symbols and abbreviationsWord-p. 9
4  Introduction
5  User Plane Architecture in 5GC
6  Candidate User Plane Protocols
6.1  GTP-U
6.2  Segment Routing IPv6 (SRv6)
6.2.1  General SRv6 Description
6.2.2  Description of SRv6 solution in 5GC  General  PrinciplesUp  SRv6 SID EncodingWord-p. 24  User Plane packet flowWord-p. 25  Discovery of SRv6 supported UPFWord-p. 29  IPv4 Transport Support for SRv6 User Plane  Security Considerations for SRv6Up  Using SRH for User Plane Messages  Packet forwarding between SMF and UPFWord-p. 32  Roaming Support  Failure Detection and Recovery  SRv6 Guaranteed Packet Delivery  SRv6 extensibility using SRH TLVsWord-p. 35
6.2.3  System ImpactsUp
7  Evaluations and ComparisonUp
8  ConclusionWord-p. 48
A  Change historyWord-p. 50

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