Melhorias na conectividade em sistemas de controle de trens: uma avaliação de algoritmos de Handover em ambiente cbtc

Abstract

By providing an effective alternative for transportation in large urban centers, railway transportation has witnessed remarkable growth in recent decades, addressing the critical demand for the modernization of train control systems. This phenomenon underscores the significance of Communication-Based Train Control (CBTC) systems, playing a crucial role in dynamically con-trolling train speed and position, directly impacting passenger safety and operational efficiency. Through the Data Communication System (DCS) subsystem using wireless communications, such as IEEE 802.11 (Wi-Fi) technology, CBTC adjusts train speed and position along the route. This work aims to investigate the impact of handover in railway systems utilizing CBTC technology. The research focuses on optimizing the handover process to enhance train response time to critical commands, such as emergency braking. The methodology employed involved modeling a simulator that encompasses the modeling used for train movement, train-ground communication, and the applied handover algorithms. The analysis encompasses the identi- fication and understanding of communication delays resulting from handover, exploring how different algorithms may influence the overall system performance. The study also explores the use of specific metrics to assess the effectiveness of the various examined algorithms. Results indicate that optimizing the handover process can significantly enhance CBTC systems and underscore the importance of ongoing research in the signaling field of metro systems and the telecommunication technologies present in CBTC to improve the safety and efficiency of these systems.