Communication Technologies for Vehicles: 5th International by David W. Matolak (auth.), Marion Berbineau, Magnus Jonsson,

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 e-book constitutes the joint refereed lawsuits of the fifth overseas Workshop on conversation applied sciences for Vehicles/Trains, Nets4Cars 2013 and Nets4Trains 2013, held in Vilnius, Lithuania, in may well 2013. The 12 complete papers of the line music and five complete papers of the rail tune awarded including three invited talks have been conscientiously reviewed and chosen from 24 submissions. They handle subject matters reminiscent of intra-vehicle, inter-vehicle and automobile to infrastructure communications (protocols and standards), mobility and site visitors types (models, methodologies, and techniques), trying out, and applications.

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Example text

We also assume that when one RLC-packet is pushed out from the RLC, it is tagged with a delay constraint related to the latency requirements of the application. When a new packet belonging to a ST user arrives at the input of the scheduler, it is stored in a ST buffer and a PRB tagging function updates a PRB tag table according to the ST QoS. The PRB tagging is updated after each new allocation or after any new buffer shifting after a frame transmission to the PHY layer. , with Round robin, max-SINR, Proportional fair ), a Resource Checking is performed for the buffered ST packets based on the PRB tag tables.

It has to be noted that in many low ST load scenarii, the proposed scheduler shows no gain with respect to the state of the art. In Fig. 5, we consider 1, 2 or 4 low-speed trains with ST throughput of 100kbps CBTC, 1Mbps CCTV or 4Mbps (high quality or several) HQ-CCTV. First, the CBTC at 100kbps has no impact on the BET throughput for four trains, and this is also the case for one and two trains in the cell which are not plotted on the figure. When the trains use CCTV at 1Mbps, the impact on the BET traffic becomes non negligible with two trains and very important with four trains.

In a category of applications classified as non-vital operational, we can find CCTV. It can be used to monitor passengers (on-board monitoring), but also to monitor tracks by reporting in advance any obstruction like a car stuck in a level crossing. CCTV is also used to monitor train doors while stopping at a station. Train maintenance, including real-time monitoring from ground and alarm reports, or on-board system configuration before train departure, fall also in the non-vital category, along with on-board passenger information.

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