Service Function Chaining Use Cases in Fog RAN
draft-bernardos-sfc-fog-ran-06

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SFC WG                                                     CJ. Bernardos
Internet-Draft                                                      UC3M
Intended status: Informational                                 A. Rahman
Expires: March 10, 2020                                        A. Mourad
                                                            InterDigital
                                                       September 7, 2019

             Service Function Chaining Use Cases in Fog RAN
                     draft-bernardos-sfc-fog-ran-06

Abstract

   Fog Radio Access Networks (RAN) refers to the part of the RAN that is
   virtualized at the very edge of the network, even at the end-user
   device.  Fog RAN support is considered critical for the 5G mobile
   network architectures currently being developed in various research,
   standardization and industry forums.  Since fog RAN builds on top of
   virtualization and can involve several virtual functions running on
   different virtualized resources, Service function chaining (SFC)
   support for the fog RAN will be critical.  This document describes
   the overall fog RAN approach and also gives some use cases.  Finally
   it proposes some requirements to be considered in the development of
   the SFC architecture and related protocols.

Status of This Memo

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

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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 10, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bernardos, et al.        Expires March 10, 2020                 [Page 1]
Internet-Draft                 Fog RAN SFC                September 2019

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Fog RAN Overview  . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Applicability of SFC to Fog RAN . . . . . . . . . . . . . . .   8
   5.  Fog RAN requirements  . . . . . . . . . . . . . . . . . . . .  11
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Appendix A.  4G (LTE) . . . . . . . . . . . . . . . . . . . . . .  14
   Appendix B.  5G . . . . . . . . . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   The telecommunications sector is experiencing a major revolution that
   will shape the way networks and services are designed and deployed
   for the next decade.  We are witnessing an explosion in the number of
   applications and services demanded by users, which are now really
   capable of accessing them on the move.  In order to cope with such a
   demand, some network operators are looking at the cloud computing
   paradigm, which enables a potential reduction of the overall costs by
   outsourcing communication services from specific hardware in the
   operator's core to server farms scattered in data centers.  These
   services have different characteristics if compared with conventional
   IT services that have to be taken into account in this cloudification
   process.  Also the transport network is affected in that it is
   evolving to a more sophisticated form of IP architecture with trends
   like separation of control and data plane traffic, and more fine-
   grained forwarding of packets (beyond looking at the destination IP