Coding techniques for satellite systems
draft-irtf-nwcrg-network-coding-satellites-05

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Last updated 2019-06-04
Replaces draft-kuhn-nwcrg-network-coding-satellites
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Internet Engineering Task Force                             N. Kuhn, Ed.
Internet-Draft                                                      CNES
Intended status: Informational                            E. Lochin, Ed.
Expires: December 6, 2019                                   ISAE-SUPAERO
                                                            June 4, 2019

                Coding techniques for satellite systems
             draft-irtf-nwcrg-network-coding-satellites-05

Abstract

   This document is the product of the Coding for Efficient Network
   Communications Research Group (NWCRG).  This document follows the
   taxonomy document [RFC8406] and considers coding as a linear
   combination of packets that operate above the network layer.  In this
   context, this memo details a multi-gateway satellite system to
   identify use-cases where coding is relevant.  As example, coding
   operating above the network layer can be exploited to cope from
   residual losses or provide reliable multicast services.  The
   objective is to contribute to a larger deployment of such techniques
   in SATCOM systems.  This memo also identifies open research issues
   related to the deployment of coding in SATCOM systems, such as the
   interaction between congestion controls and coding techniques.

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
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   This Internet-Draft will expire on December 6, 2019.

Copyright Notice

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

Kuhn & Lochin           Expires December 6, 2019                [Page 1]
Internet-Draft   Coding techniques for satellite systems       June 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  A note on satellite topology  . . . . . . . . . . . . . . . .   5
   3.  Use-cases for improving the SATCOM system performance with
       coding techniques . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Two-way relay channel mode  . . . . . . . . . . . . . . .   7
     3.2.  Reliable multicast  . . . . . . . . . . . . . . . . . . .   8
     3.3.  Hybrid access . . . . . . . . . . . . . . . . . . . . . .   9
     3.4.  Dealing with LAN losses . . . . . . . . . . . . . . . . .   9
     3.5.  Dealing with varying channel conditions . . . . . . . . .  10
     3.6.  Improving the gateway handovers . . . . . . . . . . . . .  11
   4.  Research challenges . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  On the joint-use of coding techniques and congestion
           control in SATCOM systems . . . . . . . . . . . . . . . .  12
     4.2.  On the efficient usage of satellite ressource . . . . . .  12
     4.3.  Interaction with virtualized satellite gateways and
           terminals . . . . . . . . . . . . . . . . . . . . . . . .  12
     4.4.  Delay/Disruption Tolerant Networks  . . . . . . . . . . .  12
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .  13
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   9.  Informative References  . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

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 goodput when the channel quality is good.  There is
   usually enough redundancy to guarantee a Quasi-Error Free
   transmission.  The recovery time depends on the encoding block size.
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