By Mohamed Slim Ben Mahmoud, Christophe Guerber, Nicolas Larrieu, Alain Pirovano, Jos? Radzik
This publication bargains with air-ground aeronautical communications. the most aim is to provide the reader a survey of the presently deployed, rising and destiny communications platforms devoted to electronic info communications among the plane and the floor, specifically the information hyperlink. these conversation structures exhibit particular homes rather to these wide-spread for terrestrial communications. during this e-book, the process architectures are extra particularly thought of from the entry to the appliance layers as radio and actual functionalities have already been addressed intimately in others books.
The first half is an advent to aeronautical communications, their particular options, homes, specifications and terminology. the second one half offers the presently used structures for air flooring communications in continental and oceanic region. The 3rd half enlightens the reader at the rising and destiny verbal exchange structures and a few prime learn tasks desirous about this scope. ultimately, sooner than the belief, the fourth half offers numerous major demanding situations and learn instructions at present below investigation.
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Additional info for Aeronautical Air-Ground Data Link Communications
1. 3. 1. 1. Frequency bands for aeronautics As any wireless communication network, ATN is subjected to the International Telecommunications Union (ITU, a specialized agency of the UNs) regulations for frequency allocation. 2. 2. Frequency bands The allocation of frequencies was conducted over time to allow the coexistence of all services. The stakes are nonetheless very important; the available bandwidth is often the main limitation to the capacity of radio communication systems. Several HF sub-bands are allocated to civil aviation in between 2,850 and 24,890 kHz.
The remaining part of the upper layers depends on the application itself. Current Communication Radio Systems for Data Link 15 Concerning routing protocols, ICAO considered that intradomain routing will be a local matter, and the choice of the related routing protocol will remain implementation specific. e. at the boundary of the routing domains). In the very specific case of air–ground data link, ATN also makes use of one PDU from the ES-IS protocol as defined in ISO 9542 in order to handle airborne router discovery between an airborne BIS and the first ground BIS (also known as air–ground BIS).
In any of these cases, a new ground station will be chosen, with the same provided services as far as possible. If the selected ground station does not belong to the same ground system, the airborne system will have to use the link establishment procedure presented here above, as it has also to log on the new ground system, and the old link will be explicitly disconnected by sending a DISC frame. There are several different variants for handing over a connection from one ground station to another within the same VDL mode 2 system.