QUIC for SATCOM
draft-kuhn-quic-4-sat-05

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Internet Engineering Task Force                                  N. Kuhn
Internet-Draft                                                      CNES
Intended status: Informational                              G. Fairhurst
Expires: November 30, 2020                        University of Aberdeen
                                                               J. Border
                                             Hughes Network Systems, LLC
                                                              E. Stephan
                                                                  Orange
                                                            May 29, 2020

                            QUIC for SATCOM
                        draft-kuhn-quic-4-sat-05

Abstract

   QUIC has been designed for use across Internet paths.  Initial
   designs of QUIC focused on common deployment scenarios for web
   traffic.  This document focuses on the performance when using a path
   with a large Bandwidth-Delay Product (BDP).

   A large BDP path can result from using a satellite communication
   (SATCOM) system.  The BDP is also high for paths where a satellite
   network segment is combined with other network technologies
   (Ethernet, cable modems, WiFi, cellular, radio links, etc), resulting
   in more complex characteristics.  These path characteristics have
   implications on the efficiency of the network traffic and unless
   considered in a design can impact the end-to-end quality of
   experience by the transport service.

   This memo identifies the characteristics of a SATCOM link that impact
   the operation of the QUIC transport protocol.  It proposes regression
   tests to evaluate QUIC over SATCOM links.  It discusses how to ensure
   acceptable protocol performance.

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

Kuhn, et al.            Expires November 30, 2020               [Page 1]
Internet-Draft                 QUIC 4 SAT                       May 2020

   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 November 30, 2020.

Copyright Notice

   Copyright (c) 2020 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Operating over a path with a large BDP  . . . . . . . . . . .   3
   3.  TCP Split Solution  . . . . . . . . . . . . . . . . . . . . .   5
   4.  Regression tests  . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Medium public satellite broadband access  . . . . . . . .   6
     4.2.  Congested medium public satellite broadband access  . . .   7
     4.3.  Variable medium public satellite broadband access . . . .   7
     4.4.  Loss-free large public satellite broadband access . . . .   8
     4.5.  Lossy large public satellite broadband access . . . . . .   9
   5.  Mechanisms that improve the performance of QUIC for SATCOM  .   9
     5.1.  Getting up to speed . . . . . . . . . . . . . . . . . . .   9
     5.2.  Maximum window  . . . . . . . . . . . . . . . . . . . . .  10
     5.3.  Reliability . . . . . . . . . . . . . . . . . . . . . . .  10
     5.4.  ACK ratio . . . . . . . . . . . . . . . . . . . . . . . .  10
   6.  Discussion  . . . . . . . . . . . . . . . . . . . . . . . . .  11
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   9.  Informative References  . . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   The end-to-end performance of an application using an Internet path
   can be impacted by the Bandwidth-Delay Product (BDP) of the links and
   network devices forming the path.  For instance, the page load time