Service Function Chaining Dataplane Elements in Mobile Networks
draft-aranda-sfc-dp-mobile-04

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Last updated 2017-06-30
Replaces draft-aranda-sf-dp-mobile
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SFC                                                  P. Aranda Gutierrez
Internet-Draft
Intended status: Experimental                               M. Gramaglia
Expires: January 2, 2018                                            UC3M
                                                              DRL. Lopez
                                                                     TID
                                                             W. Haeffner
                                                                Vodafone
                                                           July 01, 2017

    Service Function Chaining Dataplane Elements in Mobile Networks
                     draft-aranda-sfc-dp-mobile-04

Abstract

   The evolution of the network towards 5G implies a challenge for the
   infrastructure.  The targeted services and the full deployment of
   virtualization in all segments of the network will be possible and
   necessary to provide some traffic-specific services near the next
   generation base stations where the radio is processed.  Thus, service
   function chains that currently reside in the infrastructure of the
   Network operator (like, e.g. the Expeded Packet Gateway(EPG)) will be
   extended to the radio access network (RAN).

   In this draft we provide a non-exhaustive but representative list of
   service functions in 4G and 5G networks, and explore different
   scenarios for service-aware orchestration.

   We base on the problem statement [RFC7498] and architecture framework
   [RFC7665]  of the SFC working group, as well on the existing mobile
   networks use cases [I-D.ietf-sfc-use-case-mobility]  and the
   requirement gathering process of the ITU-R IMT 2020 [1] and different
   initiatives in Europe [2], Korea [3] and China [4] to anticipate
   network elements that will be needed in 5G networks.

   We then explore service-aware orchestration scenarios identifying
   where different network functions can be deployed in a fully
   virtualised future network, where both the core and the edge provide
   advanced virtualisation capabilities.

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

Aranda Gutierrez, et al. Expires January 2, 2018                [Page 1]
Internet-Draft  SFC Dataplane Elements in Mobile Networks      July 2017

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   This Internet-Draft will expire on January 2, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology and abbreviations . . . . . . . . . . . . . .   3
     1.2.  General scope of mobile service chains  . . . . . . . . .   4
     1.3.  Requirements for 5G networks  . . . . . . . . . . . . . .   5
       1.3.1.  Evolution of the end-to-end carrier network . . . . .   5
   2.  Mobile network overview . . . . . . . . . . . . . . . . . . .   5
     2.1.  Building blocks of 4G and 5G networks . . . . . . . . . .   6
       2.1.1.  Classification schemes for 5G networks  . . . . . . .   7
     2.2.  Transport Network Considerations  . . . . . . . . . . . .   7
     2.3.  Control plane considerations  . . . . . . . . . . . . . .   7
     2.4.  Operator requirements . . . . . . . . . . . . . . . . . .   7
   3.  New concepts for virtualised mobile networks  . . . . . . . .   8
     3.1.  Service-aware orchestration . . . . . . . . . . . . . . .   8
     3.2.  Combining Access and Core . . . . . . . . . . . . . . . .  10
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
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