Network coding and satellites
draft-kuhn-nwcrg-network-coding-satellites-04

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Internet Engineering Task Force                             N. Kuhn, Ed.
Internet-Draft                                                      CNES
Intended status: Informational                            E. Lochin, Ed.
Expires: November 9, 2018                                   ISAE-SUPAERO
                                                             May 8, 2018

                     Network coding and satellites
             draft-kuhn-nwcrg-network-coding-satellites-04

Abstract

   This memo presents the current deployment of network coding in some
   satellite telecommunications systems along with a discussion on the
   multiple opportunities to introduce these techniques at a wider
   scale.

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   This Internet-Draft will expire on November 9, 2018.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Glossary  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  A note on satellite topology  . . . . . . . . . . . . . . . .   3
   3.  Status of network coding in actually deployed satellite
       systems . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Details on the use cases  . . . . . . . . . . . . . . . . . .   5
     4.1.  Two way relay channel mode  . . . . . . . . . . . . . . .   5
     4.2.  Reliable multi-cast . . . . . . . . . . . . . . . . . . .   6
     4.3.  Hybrid access . . . . . . . . . . . . . . . . . . . . . .   7
     4.4.  Dealing with varying capacity . . . . . . . . . . . . . .   7
     4.5.  Improving the gateway handovers . . . . . . . . . . . . .   8
     4.6.  Delay/Disruption Tolerant Networks  . . . . . . . . . . .   9
   5.  Discussion on the deployability . . . . . . . . . . . . . . .  10
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  11
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   Network coding schemes are inherent part of the satellite systems as
   the physical layer requires specific robustness to guarantee an
   efficient usage of the expensive radio resource.  Further exploiting
   these schemes is an opportunity for a better end-user experience
   along with a better exploitation of the scarce resource.

   In this context, this memo aims at:

   o  summing up the current deployment of network coding schemes over
      LEO and GEO satellite systems;

   o  identifying opportunities for further usage of network coding in
      these systems.

1.1.  Glossary

   The glossary of this memo is related to the network coding taxonomy
   document [I-D.irtf-nwcrg-network-coding-taxonomy].

   The glossary is extended as follows:

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   o  BBFRAME: Base-Band FRAME;

   o  CPE: Customer Premise Equipment;

   o  DTN: Delay/Disruption Tolerant Network;

   o  EPC: Evolved Packet Core;

   o  ETSI: European Telecommunications Standards Institute;
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