Optimized Mobile User Plane Solutions for 5G
draft-bogineni-dmm-optimized-mobile-user-plane-01

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Last updated 2018-06-29
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dmm                                                          K. Bogineni
Internet-Draft                                                   Verizon
Intended status: Informational                               A. Akhavain
Expires: December 31, 2018                 Huawei Canada Research Centre
                                                              T. Herbert
                                                              Quantonium
                                                            D. Farinacci
                                                             lispers.net
                                                      A. Rodriguez-Natal
                                                           G. Carofiglio
                                                                 J. Auge
                                                          L. Muscariello
                                                            P. Camarillo
                                                     Cisco Systems, Inc.
                                                                S. Homma
                                                                     NTT
                                                           June 29, 2018

              Optimized Mobile User Plane Solutions for 5G
           draft-bogineni-dmm-optimized-mobile-user-plane-01

Abstract

   3GPP CT4 has approved a study item to study different mobility
   management protocols for potential replacement of GTP tunnels between
   UPFs (N9 Interface) in the 3GPP 5G system architecture.

   This document provides an overview of 5G system architecture in the
   context of N9 Interface which is the scope of the 3GPP CT4 study item
   [CP-173160-1], [TS.23.501-3GPP], [TS.23.502-3GPP], [TS.23.503-3GPP],
   [TS.29.244-3GPP], [TS.29.281-3GPP], [TS.38.300-3GPP], and
   [TS.38.401-3GPP].

   Architecture requirements for evaluation of candidate protocols are
   provided.  Optimization of the user plane can be in different ways -
   packet overhead, transport integration, etc.

   Several IETF protocols are considered for comparison: SRv6, LISP, ILA
   and several combinations of control plane and user plane protocols.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute

Bogineni, et al.        Expires December 31, 2018               [Page 1]
Internet-Draft   draft-bogineni-dmm-optimized-mobile-up        June 2018

   working documents as Internet-Drafts.  The list of current Internet-
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   This Internet-Draft will expire on December 31, 2018.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Scope of 3GPP Study Items . . . . . . . . . . . . . . . .   5
     1.2.  Relevance to IETF . . . . . . . . . . . . . . . . . . . .   6
     1.3.  Rationale for GTP replacement . . . . . . . . . . . . . .   6
     1.4.  Usage of GTP  . . . . . . . . . . . . . . . . . . . . . .   7
     1.5.  Document Structure  . . . . . . . . . . . . . . . . . . .   7
   2.  Conventions and terminology . . . . . . . . . . . . . . . . .   7
   3.  Overview of 3GPP Release 15 5G Architecture . . . . . . . . .   8
     3.1.  Non-Roaming Reference Architecture  . . . . . . . . . . .   8
     3.2.  End-to-end Protocol Stack . . . . . . . . . . . . . . . .  10
     3.3.  Mobility Architecture with reference to N9  . . . . . . .  11
       3.3.1.  User Plane Function (UPF) Functionalities . . . . . .  12
       3.3.2.  N9 Interface  . . . . . . . . . . . . . . . . . . . .  15
     3.4.  Roaming Architectures . . . . . . . . . . . . . . . . . .  16
       3.4.1.  Roaming and policy management . . . . . . . . . . . .  17
       3.4.2.  Local Break Out Model . . . . . . . . . . . . . . . .  18
       3.4.3.  Home Routed Model . . . . . . . . . . . . . . . . . .  18
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