Analysis and Problem Statements for Interworking between 5G Network Slicing and Transport Network
draft-mink-5g-ns-transport-ps-00

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Network Working Group                                        T. Miyasaka
Internet-Draft                                             KDDI Research
Intended status: Informational                                 K. Kumaki
Expires: December 28, 2018                                       T. Niwa
                                                                    KDDI
                                                           June 26, 2018

  Analysis and Problem Statements for Interworking between 5G Network
                     Slicing and Transport Network
                    draft-mink-5g-ns-transport-ps-00

Abstract

   This document describes problem statements for realizing an end-to-
   end network slicing that is expected to provide service-oriented
   communications between users and applications.  3GPP introduced the
   network slicing concept in the 5G architecture (3GPP Release 15),
   however, it mainly focuses on mobile access and core domains.  In
   order to reap the benefit of the concept, a network slicing needs to
   be designed across multiple domains of the network including non-3GPP
   parts.  This document analyzes the current 3GPP 5G network slicing
   architecture and summarizes problem statements for the interworking
   between the 5G network slicing and the transport network.

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Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Miyasaka, et al.        Expires December 28, 2018               [Page 1]
Internet-Draft      draft-mink-5g-ns-transport-ps-00           June 2018

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Scope of this document  . . . . . . . . . . . . . . . . .   3
   2.  5G Network Slicing and Transport Network  . . . . . . . . . .   5
     2.1.  5G Network Slicing  . . . . . . . . . . . . . . . . . . .   5
     2.2.  Transport Network for End-to-End 5G Communication . . . .   6
       2.2.1.  Transport Network inside 5G System  . . . . . . . . .   6
       2.2.2.  Transport Network outside 5G System . . . . . . . . .   6
       2.2.3.  Management and Orchestration of 5G Network Slicing  .   7
   3.  General Procedure for Interworking between 5G Network Slicing
       and Transport Network . . . . . . . . . . . . . . . . . . . .   7
   4.  Analysis on Interworking  . . . . . . . . . . . . . . . . . .  10
     4.1.  Analysis Assumption . . . . . . . . . . . . . . . . . . .  10
     4.2.  Analysis inside 5G Core Network . . . . . . . . . . . . .  11
     4.3.  Analysis outside 5G Core Network  . . . . . . . . . . . .  13
   5.  Problem Statement Summary . . . . . . . . . . . . . . . . . .  14
   6.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .  14
   7.  Security Consideration  . . . . . . . . . . . . . . . . . . .  15
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   9.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  15
   10. Informative References  . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   An End-to-End(E2E) network slicing is expected to cater to much
   greater diversity of requirements for wide variety of services such
   as V2X services and factory automation.  Here, the E2E means that a
   network slicing penetrates all network domains: mobile networks,
   transport networks and so forth.  Network operators anticipate that
   it is possible to tailor the network to fit for service-oriented
   demands in a timely and cost-effective way, which in turn reduces
   OPEX and CAPEX.

   3GPP is leading a network slicing concept in the 5G system (3GPP
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