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Improving Usable LDACS Data Rate via Certificate Validity Optimization

Ewert, Thomas and Mäurer, Nils and Gräupl, Thomas (2022) Improving Usable LDACS Data Rate via Certificate Validity Optimization. In: 2022 Integrated Communication, Navigation and Surveillance Conference, ICNS 2022, pp. 1-9. IEEE. 2022 Integrated Communication, Navigation and Surveillance Conference (ICNS), 2022-04-05 - 2022-04-07, Dulles, VA, USA. doi: 10.1109/ICNS54818.2022.9771500. ISBN 978-166548419-0. ISSN 2155-4943.

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Official URL: https://ieeexplore.ieee.org/abstract/document/9771500


Since the beginning of the century, an increasing amount of air traffic has pushed current aeronautical communication systems to their limits. Therefore, a modernization process is ongoing, envisioning to digitalize previously analog systems and prepare them for future requirements. Among these efforts is the L-Band Digital Aeronautical Communications System (LDACS), which is a cellular broadband digital data link system, foreseen for regularity-of-flight and safety-communications. Any newly developed system must provide strong cybersecurity, especially when deployed within critical infrastructures. Similar to other communication systems, LDACS will utilize digital certificates within its Public Key Infrastructure (PKI). Such certificates must be available to the respective communication partner, and therefore might have to be transmitted via the radio link upon first contact. With bandwidth generally being a restricting factor in wireless communication, especially in the spectrum-scarce Lband different certificate lifetimes have varying impacts on the amount of security data. In previous research work, reduction of the LDACS security overhead has already been considered in e.g., the secure cell-attachment procedure between ground and aircraft stations or within a proposal for the utilization of group key distribution procedures in LDACS. However, the effect of different certificate lifetimes on the amount of security data and therefore the available user data rate has not been investigated so far. The objective of this paper is to compare different approaches for certificate validity periods in respect to the additional network overheads being created. Computer simulations using historical flight data from the OpenSky Network and a dedicated LDACS simulator help identifying the most effective solution.

Item URL in elib:https://elib.dlr.de/187784/
Document Type:Conference or Workshop Item (Speech)
Title:Improving Usable LDACS Data Rate via Certificate Validity Optimization
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Mäurer, NilsUNSPECIFIEDhttps://orcid.org/0000-0003-1324-7574UNSPECIFIED
Gräupl, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-7864-774XUNSPECIFIED
Date:5 April 2022
Journal or Publication Title:2022 Integrated Communication, Navigation and Surveillance Conference, ICNS 2022
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-9
Keywords:LDACS, Cybersecurity, Certificates, PKI, OCSP, CRL, Communications Performance, OpenSky Network
Event Title:2022 Integrated Communication, Navigation and Surveillance Conference (ICNS)
Event Location:Dulles, VA, USA
Event Type:international Conference
Event Start Date:5 April 2022
Event End Date:7 April 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Cyber-Security Centric Communication, Navigation and Surveillance
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Communications Systems
Deposited By: Mäurer, Nils
Deposited On:23 Aug 2022 16:08
Last Modified:24 Apr 2024 20:49

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