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Circumventing the Random Access Channel: New Concepts for Accessing a Command & Control Link for Unmanned Aircraf

Mielke, Daniel M. (2019) Circumventing the Random Access Channel: New Concepts for Accessing a Command & Control Link for Unmanned Aircraf. In: 38th IEEE/AIAA Digital Avionics Systems Conference, DASC 2019. DASC 2019, 9.-12.09.2019, San Diego, USA. ISBN 978-172810649-6. ISSN 2155-7195.

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Unmanned Aircraft (UA) are expected to considerably grow in importance for global aviation during the next years. Although a comparatively high level of autonomy is anticipated for UA, a reliable data link (Command and Control, C2-link) will be mandatory for their operation. The C2 link is used to exchange all information between UA and remote pilot, immediately required for operating the UA. This data is called non-payload data; examples are positioning information, telemetry data or flight trajectories, respectively. None of the currently available aeronautical communication standards can fulfill the requirements for such a multi-user, multi-point datalink in terms of reliability, flexibility, data integrity, robustness and latency. The C-Band Digital Aeronautical Communication System (CDACS) is a possible candidate for such a C2 link making use of modern communication techniques like Orthogonal Frequency Division Multiplex (OFDM) and SC-FDMA. While CDACS development has so far focused on the general requirements and the waveform design, physical layer robustness also known as PHY layer security, e.g. against jamming/spoofing, has not yet been considered yet. One aspect of making CDACS more robust is hardening the login process of a user, in case of CDACS a UA, into the network against such attacks. This login process is often realized using a Random Access Channel (RACH), that enables users not known to the base station access to the network. In this paper we discuss several concepts that try to avoid the traditional RACH, thus closing one potential vulnerability of the system

Item URL in elib:https://elib.dlr.de/127733/
Document Type:Conference or Workshop Item (Speech)
Title:Circumventing the Random Access Channel: New Concepts for Accessing a Command & Control Link for Unmanned Aircraf
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mielke, Daniel M.Daniel.Mielke (at) dlr.dehttps://orcid.org/0000-0003-0625-8910
Date:October 2019
Journal or Publication Title:38th IEEE/AIAA Digital Avionics Systems Conference, DASC 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:unmanned aviation, security, physical layer, random access channel, medium access, multi user, jamming mitigation
Event Title:DASC 2019
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:9.-12.09.2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Communication, Navigation and Surveillance (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Communications Systems
Deposited By: Mielke, Daniel M.
Deposited On:07 Apr 2020 15:23
Last Modified:31 Jan 2023 18:13

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