Automatic Train Coupling: Challenges and Key Enablers

Soliman, Mohammad; Siemons, Jasper; Kochems, Jacob; Alshrafi, Wasim; Shamshoom, Jeries; Heberling, Dirk; Dekorsy, Armin

doi:10.1109/mcom.2019.1800942

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…Several existing works proposed to use mmWave for T2T communications. Soliman et al [26] conducted the world's first dynamic millimeter wave T2T propagation measurement study. The measurement results show that the multipath component reflected from the ground will change the received signal power, which can be effectively suppressed by the circularly polarized antenna.…”

Section: Related Workmentioning

confidence: 99%

Robust Train-to-Train Transmission Scheduling in mmWave Band for High Speed Train Communication Systems

Niu

Mao

et al. 2023

IEEE Trans. Veh. Technol.

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Demands for data traffic in high-speed railway (HSR) has increased drastically. The increasing entertainment needs of passengers, safety control information exchanges of trains, etc., make train-to-train (T2T) communications face the challenge of achieving high-capacity and high-quality data transmissions. In order to greatly increase the communication capacity, it is urgent to introduce millimeter wave (mmWave) technology. Faced with the problem that mmWave link is easy to be blocked, this paper leverages the existing equipment to assist relay, and proposes an effective transmission scheduling scheme to improve the robustness of T2T communication systems. First of all, we formulate a mixed integer nonlinear programming (MINLP) optimization problem the transmission scheduling in T2T communication systems where mobile relays (MRs) are all working in the full-duplex (FD) mode. Then we propose a low complexity heuristic algorithm to solve the optimization problem, which consists of three components: relay selection, transmission mode selection, and transmission scheduling. The simulation results show that the proposed algorithm can greatly improve the number of completed flows and system throughput. Finally, we analyze the influence of different design parameters on the system performance. The results show that the proposed algorithm can achieve more data flows and system throughput within a reasonable communication distance threshold in T2T communication with obstacles in different orbits. It can balance the computational complexity and system performance to achieve an efficient and robust data transmission.

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Section: Related Workmentioning

confidence: 99%

Robust Train-to-Train Transmission Scheduling in mmWave Band for High Speed Train Communication Systems

Niu

Mao

et al. 2023

IEEE Trans. Veh. Technol.

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“…Different publications have been dedicated to possible VCTS control and operation scenarios 7 – 10 , the comparative and numerical analysis and simulation of operational benefits 11 – 15 as well as safety related issues 16 , 17 . Other research was focussing on specific technological enablers of VCTS 18 , 19 or Automatic Train Coupling 20 . However, the technical feasibility of the VCTS concept is analysed for the first time in such detail in this publication.…”

Section: Introductionmentioning

confidence: 99%

Technical feasibility analysis and introduction strategy of the virtually coupled train set concept

Stickel

Schenker

Dittus

et al. 2022

Sci Rep

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Today’s railway network capacity is limited by constraints imposed by traditional train protection systems. A way to overcome those limitations, maximize the railway network performance and also increase the operational flexibility is presented by the Virtually Coupled Train Set (VCTS) concept. This paper evaluates the technical feasibility of this approach, that was developed and is further evaluated in the framework of the Shift2Rail (S2R) project X2Rail-3. The main functionality of virtually coupled train sets is achieved by replacing the mechanical coupler between two railway vehicles by an electronic (virtual) coupling link. This operational change requires a permanent vehicle-to-vehicle communication and precise distance measurement, while enabling much faster coupling and decoupling procedures, increased interoperability and the operation of trains with a headway below absolute braking distance. To evaluate the technical feasibility of the VCTS concept, a series of technical and operational subsystem have been identified and analyzed. Interviews with experts from a variety of VCTS linked topics have been conducted, to evaluate the state of the art and new developments for those subsystems. Subsequently, the capabilities of the subsystems have been compared with the requirements of the VCTS system. In addition, different mitigations to overcome possible obstacles have been identified and evaluated. As the result, the most critical technical aspects for the implementation and success of VCTS have been identified as the requirement of controllable, fast and accurate responding braking systems, the availability of suitable communication technologies and frequency bands, the need for highly-accurate measurement of distance, speed and acceleration and the fast detection and monitoring of train integrity. Considering those results, a qualitative roadmap for the future VCTS development and introduction strategy is derived.

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“…The research in [5] presents a new train-to-train (T2T) based architecture to replace Communication-Based Train Control (CBTC) systems in urban rail transit. The article [6] investigates the Automatic Train Coupling (ATC) system and introduces the SBDist system, which provides direct communication and ranging between trains. The Terrestrial Trunked Radio (TETRA) is introduced for T2T communication, and channel measurements are performed near the 450 MHz band [7].…”

Section: Introductionmentioning

confidence: 99%

Off-Network Communications For Future Railway Mobile Communication Systems: Challenges and Opportunities

Hu¹,

Liu²,

Li³

et al. 2022

Preprint

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GSM-R is predicted to be obsoleted by 2030, and a suitable successor is needed. Defined by the International Union of Railways (UIC), the Future Railway Mobile Communication System (FRMCS) contains many future use cases with strict requirements. These use cases should ensure regular communication not only in network coverage but also uncovered scenarios. There is still a lack of standards on off-network communication in FRMCS, so this article focuses on off-network communication and intends to provide reference and direction for standardization. We first provide a comprehensive summary and analysis of off-network use cases in FRMCS. Then we give an overview of existing technologies (GSM-R, TETRA, DMR, LTE-V2X, and NR-V2X) that may support off-network communication. In addition, we simulate and evaluate the performance of existing technologies. Simulation results show that it is possible to satisfy the off-network communication requirements in FRMCS with enhancements based on LTE-V2X or NR-V2X. Finally, we give some future research directions to provide insights for industry and academia.

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Automatic Train Coupling: Challenges and Key Enablers

Cited by 9 publications

References 8 publications

Robust Train-to-Train Transmission Scheduling in mmWave Band for High Speed Train Communication Systems

Robust Train-to-Train Transmission Scheduling in mmWave Band for High Speed Train Communication Systems

Technical feasibility analysis and introduction strategy of the virtually coupled train set concept

Off-Network Communications For Future Railway Mobile Communication Systems: Challenges and Opportunities

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