By David W. Matolak (auth.), Marion Berbineau, Magnus Jonsson, Jean-Marie Bonnin, Soumaya Cherkaoui, Marina Aguado, Cristina Rico-Garcia, Hassan Ghannoum, Rashid Mehmood, Alexey Vinel (eds.)
This ebook constitutes the joint refereed complaints of the fifth foreign Workshop on conversation applied sciences for Vehicles/Trains, Nets4Cars 2013 and Nets4Trains 2013, held in Vilnius, Lithuania, in may possibly 2013. The 12 complete papers of the line song and five complete papers of the rail music provided including three invited talks have been rigorously reviewed and chosen from 24 submissions. They deal with issues akin to intra-vehicle, inter-vehicle and automobile to infrastructure communications (protocols and standards), mobility and site visitors versions (models, methodologies, and techniques), checking out, and applications.
Read or Download Communication Technologies for Vehicles: 5th International Workshop, Nets4Cars/Nets4Trains 2013, Villeneuve d’Ascq, France, May 14-15, 2013. Proceedings PDF
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Extra resources for Communication Technologies for Vehicles: 5th International Workshop, Nets4Cars/Nets4Trains 2013, Villeneuve d’Ascq, France, May 14-15, 2013. Proceedings
The BET traﬃc satisﬁes the full buﬀer assumption, and the ST traﬃc has a MAC latency constraint of 50ms. We consider three possible data rates: 100kbps for CBTC-like traﬃc, 1Mbps for CCTV, and 4Mbps for CCTV with several video streams. First, we will consider a shared infrastructure where NBET = 20 regular PLMN LTE users per cell, for each snapshot, use a BET service. We assume that several trains lie in the cell, and use ST services. In Fig. 3, we ﬁrst consider the case with no ST traﬃc as the reference performance.
Pre-existent Ku equipments will need to be changed. Atmospheric attenuation in case of bad weather conditions (mostly fog, rain and snow), will be much higher, bringing deep fading effects and persistent attenuations to the signal that can reach 15 dB in the worst cases. Existent Ka Band satellites use (typically) 250 to 500 km cellular coverage in order to be able to reuse frequency bands geographically (to optimize satellite capacity). Dynamic frequency allocation and horizontal handover techniques will be needed in order to assure a seamless connectivity for trains passing from one cell to another.
This service is based on a 2-way Ku-band satellite main link with WiFi radio coverage for non-satellite-visibility areas (tunnels and stations). The “BoxTGV” antenna system and architecture are shown on Figures 1 and 2 respectively. Fig. 1. “BoxTGV” antenna system Fig. 2. “BoxTGV” architecture 26 H. Ghannoum and D. Sanz Another satellite systems issue is operational expenditure (OPEX) related to satellite capacity, which can be seen as a rare resource. Since the available aggregated data throughput for the customers will depend directly on the contracted satellite capacity, the regular costs generated must be taken into account in the business model of the foreseen service.
Communication Technologies for Vehicles: 5th International Workshop, Nets4Cars/Nets4Trains 2013, Villeneuve d’Ascq, France, May 14-15, 2013. Proceedings by David W. Matolak (auth.), Marion Berbineau, Magnus Jonsson, Jean-Marie Bonnin, Soumaya Cherkaoui, Marina Aguado, Cristina Rico-Garcia, Hassan Ghannoum, Rashid Mehmood, Alexey Vinel (eds.)