Network coding and satellites
draft-irtf-nwcrg-network-coding-satellites-01
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Internet Engineering Task Force N. Kuhn, Ed.
Internet-Draft CNES
Intended status: Informational E. Lochin, Ed.
Expires: May 14, 2019 ISAE-SUPAERO
Nov 10, 2018
Network coding and satellites
draft-irtf-nwcrg-network-coding-satellites-01
Abstract
This memo details a multi-gateway satellite system to identify
multiple opportunities on how coding techniques could be deployed at
a wider scale.
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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on May 14, 2019.
Copyright Notice
Copyright (c) 2018 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
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Kuhn & Lochin Expires May 14, 2019 [Page 1]
Internet-Draft Network coding and satellites Nov 2018
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Glossary . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. A note on satellite topology . . . . . . . . . . . . . . . . 4
3. Status of reliability schemes in actually deployed satellite
systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Details on the use cases . . . . . . . . . . . . . . . . . . 6
4.1. Two way relay channel mode . . . . . . . . . . . . . . . 7
4.2. Reliable multicast . . . . . . . . . . . . . . . . . . . 7
4.3. Hybrid access . . . . . . . . . . . . . . . . . . . . . . 8
4.4. Dealing with varying capacity . . . . . . . . . . . . . . 9
4.5. Improving the gateway handovers . . . . . . . . . . . . . 10
4.6. Delay/Disruption Tolerant Networks . . . . . . . . . . . 11
5. Research challenges . . . . . . . . . . . . . . . . . . . . . 12
5.1. Deployability in current SATCOM systems . . . . . . . . . 12
5.2. Interaction with virtualization . . . . . . . . . . . . . 12
6. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . 13
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 13
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
9. Security Considerations . . . . . . . . . . . . . . . . . . . 13
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 13
10.1. Normative References . . . . . . . . . . . . . . . . . . 13
10.2. Informative References . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 17
1. Introduction
Guaranteeing both physical layer robustness and efficient usage of
the radio resource has been in the core design of SATellite
COMmunication (SATCOM) systems. The trade-off often resided in how
much redundancy a system adds to cope from link impairments, without
reducing the good-put when the channel quality is high. There is
usually enough redundancy to guarantee a Quasi-Error Free
transmission. However, physical layer reliability mechanisms may not
recover transmission losses (e.g. with a mobile user) and layer 2 (or
above) re-transmissions induce 500 ms one-way delay with a
geostationary satellite. Further exploiting coding schemes at higher
OSI-layers is an opportunity for releasing constraints on the
physical layer in such cases and improving the performance of SATCOM
systems.
We have noticed an active research activity on coding and SATCOM in
the past. That being said, not much has actually made it to
industrial developments. In this context, this document aims at
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