L-band Digital Aeronautical Communications System (LDACS)
draft-maeurer-raw-ldacs-04

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RAW                                                      N. Maeurer, Ed.
Internet-Draft                                           T. Graeupl, Ed.
Intended status: Informational             German Aerospace Center (DLR)
Expires: 3 January 2021                                  C. Schmitt, Ed.
                                         Research Institute CODE, UniBwM
                                                             2 July 2020

       L-band Digital Aeronautical Communications System (LDACS)
                       draft-maeurer-raw-ldacs-04

Abstract

   This document provides an overview of the architecture of the L-band
   Digital Aeronautical Communications System (LDACS), which provides a
   secure, scalable and spectrum efficient terrestrial data link for
   civil aviation.  LDACS is a scheduled, reliable multi-application
   cellular broadband system with support for IPv6.  LDACS shall provide
   a data link for IP network-based aircraft guidance.  High reliability
   and availability for IP connectivity over LDACS are therefore
   essential.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
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   Please review these documents carefully, as they describe your rights

Maeurer, et al.          Expires 3 January 2021                 [Page 1]
Internet-Draft                    LDACS                        July 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Motivation and Use Cases  . . . . . . . . . . . . . . . . . .   4
     3.1.  Voice Communications Today  . . . . . . . . . . . . . . .   5
     3.2.  Data Communications Today . . . . . . . . . . . . . . . .   5
   4.  Provenance and Documents  . . . . . . . . . . . . . . . . . .   6
   5.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Advances Beyond the State-of-the-Art  . . . . . . . . . .   7
       5.1.1.  Priorities  . . . . . . . . . . . . . . . . . . . . .   7
       5.1.2.  Security  . . . . . . . . . . . . . . . . . . . . . .   8
       5.1.3.  High Data Rates . . . . . . . . . . . . . . . . . . .   8
     5.2.  Application . . . . . . . . . . . . . . . . . . . . . . .   8
       5.2.1.  Air-to-Ground Multilink . . . . . . . . . . . . . . .   8
       5.2.2.  Air-to-Air Extension for LDACS  . . . . . . . . . . .   9
       5.2.3.  Flight Guidance . . . . . . . . . . . . . . . . . . .   9
       5.2.4.  Business Communication of Airlines  . . . . . . . . .  10
       5.2.5.  LDACS Navigation  . . . . . . . . . . . . . . . . . .  10
   6.  Characteristics of LDACS  . . . . . . . . . . . . . . . . . .  11
     6.1.  LDACS Sub-Network . . . . . . . . . . . . . . . . . . . .  11
     6.2.  Topology  . . . . . . . . . . . . . . . . . . . . . . . .  12
     6.3.  LDACS Physical Layer  . . . . . . . . . . . . . . . . . .  12
     6.4.  LDACS Data Link Layer . . . . . . . . . . . . . . . . . .  12
     6.5.  LDACS Mobility  . . . . . . . . . . . . . . . . . . . . .  13
   7.  Reliability and Availability  . . . . . . . . . . . . . . . .  13
   8.  Protocol Stack  . . . . . . . . . . . . . . . . . . . . . . .  15
     8.1.  Medium Access Control (MAC) Entity Services . . . . . . .  16
     8.2.  Data Link Service (DLS) Entity Services . . . . . . . . .  18
     8.3.  Voice Interface (VI) Services . . . . . . . . . . . . . .  19
     8.4.  LDACS Management Entity (LME) Services  . . . . . . . . .  19
     8.5.  Sub-Network Protocol (SNP) Services . . . . . . . . . . .  19
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  19
   10. Privacy Considerations  . . . . . . . . . . . . . . . . . . .  20
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
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