Requeriments de latència en xarxes xG per a vehicles autònoms
Tutor / director / evaluatorJofre Roca, Lluís
Document typeBachelor thesis
Rights accessOpen Access
The objective of this TFG is to analyze the latency requirements in the different communication networks applied to autonomous vehicles. We have introduced the main sensors and their different levels of autonomy. The current communication systems have been designed to transmit voice and data. They have delays that are of the order of hundreds of milliseconds, a value that is not enough to prevent two vehicles travelling at medium or high speed from crash. We showed the different types of communications where the autonomous vehicle will be take part. For the autonomous vehicle safety drive it must carry out different types of communication with other vehicles and base stations. In this work, LTE delays have been analyzed to demonstrate that these values do not fulfil the different future applications of the autonomous vehicle. To ensure safety between vehicles, very low latency communications are required. Possible improvements have been evaluated to reduce LTE latency. V2I communication latency has been performed from the SNR and BLER with LOS and NLOS communications. Latency calculation for the scenario of Eixample in Barcelona has been carried out based on the transmitted power of the station. It has been concluded that the current LTE network is not able to guarantee the latency levels established by the 3GPP for very low communications. With the appearance of the 5G network the order of magnitude of the delay will reach the desired value since one of the cases of use for which it has been designed are communications of the URLLC (Ultra-Reliable Low Latency Communications).