关键词: 重载铁路列控系统, 车-地通信系统, 公网, 虚拟专用网络, 网络安全

Abstract: The vehicle-ground communication technology of the train control system for heavy-haul railways based on public network is implemented by combing the virtual private network technology with the network protection technology. This not only avoids the complexity and high cost of building a private network, and significantly shortens the project cycle, but also maintains the efficiency of data transmission, thus becoming the preferred strategy for vehicle-ground communication of the train control system for heavy-haul railways. However, there are inherent security risks in the public network environment. In order to ensure the reliability and security of vehicle-ground communication, this paper proposes a targeted and comprehensive solution for secure vehicle-ground communication on the basis of a detailed and comprehensive analysis of existing network security technologies. The proposed solution features comprehensive utilization of multiple security technologies, to ensure the security and confidentiality of vehicle-ground data during public network transmission, and provide important guarantee for the stable operation of the train control system. It enables the train control system for heavy-haul railways to resist external threats, which effectively maintains information security and integrity, and provides strong technical support for the operational safety and efficiency of heavy-haul railways.

Key words: train control system for heavy-haul railway, vehicle-ground communication system, public network, VPN, network security