Service Function Chaining Use Cases in Fog RAN
draft-bernardos-sfc-fog-ran-08
SFC WG CJ. Bernardos
Internet-Draft UC3M
Intended status: Informational A. Rahman
Expires: March 21, 2021 A. Mourad
InterDigital
September 17, 2020
Service Function Chaining Use Cases in Fog RAN
draft-bernardos-sfc-fog-ran-08
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.
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document authors. All rights reserved.
Bernardos, et al. Expires March 21, 2021 [Page 1]
Internet-Draft Fog RAN SFC September 2020
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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
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