Wireless Ad Hoc Networks Access For Aeronautical Communications

Abstract

There is an increasing interest in the current aeronautical context to offer new services for civil aircraft passengers. For example, airlines want to offer their customers the opportunity to access the Internet, to manage their mails, to watch video on demand, to access corporate VPNs.... All these services represent a new type of air-ground communications called APC (Aeronautical Passenger Communications) in the ATN (Aeronautical Telecommunication Network) context. In this paper, we will show how an aeronautical ad hoc access network and satellite links can be used simultaneously for these communications.

Performance of Context-Aware Publish/Subscribe Systems for AANET

“…Consequently, it is dicult to obtain a delivery ratio close to 100% since it seems obvious that during this period, network partition exists. Previous studies on AANET like [2] found a reachable packet delivery ratio around 90%. It appears to be the maximum possible value of delivery ratio reachable with a publish / subscribe solution.…”

“…As AANET is especially interesting for area where no ground infrastructures are available, as over oceans, we choose to reduce the scope to the transatlantic trac. That is why our simulations are taking into account aircraft whose latitude belongs to the interval [23,5 Physical/Mac layer Studies presented in this article deal with Publish / Subscribe service and not with the AANET feasibility which has been demonstrated in other studies like [2]. That's why it is not mandatory to have realistic physical and MAC layer.…”

“…As detailed in [1], AANET (Aeronautical Ad hoc NETworks, which consist in aircraft acting as nodes of a MANET) can be seen as a subcategory of VANET. In a context of increasing air trac and new needs in term of air ground communication systems, AANET represents a relevant solution as explained in [2]. Content-based information dissemination enjoys wide applicability in AANET where resources (like bandwidth) are limited.…”

“…Finally, section 4 concludes this article and introduces further work on this topic. 2 Context-Aware Publish/Subscribe solutions in VANET As explained in [1], existing Context-Aware Publish/Subscribe systems that are adapted for VANET can be classied in three categories: geographic routing, proximity routing and overlay network based solutions. Geographic routing based solutions like [6] or [7] are based on the assumption that each event / subscription is linked to a geographical area.…”

Dynamic Cooperative MAC Protocol for Navigation Carrier Ad Hoc Networks: A DiffServ-Based Approach

“…G = G T G R , with G T and G R are antenna gains of transmitter and receiver. Thus, we have the absorption loss (in dB) PL dB = 92.44 + 10λ log( f GHz ) + 10λ log(d km ), where PL dB denotes the free space loss in dB, f GHz is the electromagnetic frequency in GHz, and d km is the distance between transmitter and receiver in km [28]. Let f GHz = 1 GHz and λ = 2, combine PL dB with the practical test results of the TTNT data link for the data rate [8], and then the propagation parameters can be summarized as Table 1.…”