MobiWorld 2008

Researchers of the University of Salzburg published at the 2008 International Workshop on Mobile IPv6 and Network-based Localized Mobility Management Conference (MobiWorld 2008) from September 10th to 12th in Yilan, Taiwan.

  • C. Bauer, S. Ayaz, M. Ehammer, T. Gräupl and F. Arnal, “Infrastructure-based Route Optimization for NEMO based on Combined Local and Global Mobility”, in Proc. Mobility Conference’08, 2008.

L-DACS 1 Project started

L-DACS1

Researchers of the University of Salzburg started their work on the L-band Digital Aeronautical Communication System 1 (EUROCONTROL) project.

English: Under Eurocontrol/FAA Action Plan 17 (AP17) activities, various candidate technologies were considered and evaluated for their supporting of the future aeronautical requirements. While operations in the VHF band would be preferred, this band is heavily congested, therefore, the L band was identified as the next best candidate band primarily due to propagation characteristics. Therefore the various technologies for the general continental system were considered to operate in the L band.

Two options for the L-band Digital Aeronautical Communication System (LDACS) were identified. The LDACS1 option represents the state of the art in the commercial developments employing modern modulation techniques and may lead to utilization/adaptation of commercial products and standards. It is derived from B-AMC, TIA-902 (P34), and WiMAX (IEEE 802.16e) in a EUROCONTROL funded study aiming at developing an initial system specification for L-DACS1. This system specification shall enable prototyping activities that in turn shall clarify system compatibility issues that cannot be covered analytically or via modeling.

Read more and get the system specification at:

http://www.eurocontrol.int/communications/public/standard_page/LDACS.html

L-DACS1 system specification.

Deutsch: Der Technologie-Vorschlag L-DACS-1 (B-VHF und B-AMC sind Vorgänger Technologien) hat beste Aussichten, zum künftigen weltweiten Flugfunkstandard L-DACS (L-band digital aeronautical communications system) zu werden. Die Spezifikation von L-DACS ist unter http://www.eurocontrol.int/communications/public/standard_page/LDACS.html zu finden. Die Universität Salzburg ist an der Entwicklung von L-DACS 1 von Anfang an maßgeblich beteiligt und hat große Teile des Protokolls und der Systemarchitektur entworfen. Jüngst wurde am DLR (unter Beteilingung von Forschern der Universität Salzburg) der weltweit erste Prototyp finalisiert und erfolgreich getestet. L-DACS-1 basiert auf dem sehr robusten und flexibel konfigurierbaren Modulationsverfahren OFDM (orthogonal frequency division multiplexing) und unterdrückt die im gleichen Frequenzband vorkommenden Signale von DME-Stationen.