2023-04-25-Capgemini-未来铁路移动通信系统（英）-_14页_2mb

Introduction to Future Railway Mobile Communication Systems (FRMCS)

FRMCS is an advanced connectivity solution for rail digitalization, developed by the International Union of Railways (UIC) to replace the outdated GSM-R system. It aims to support next-generation railway services such as ETCS and ATO, leveraging 5G technology for improved data capabilities.

Key Components of FRMCS

FRMCS is built on a separation of three strata: Railway Application Stratum for service-specific logic, Service Stratum for communication services, and Transport Stratum for open, software-driven infrastructure based on 5G. This architecture enables agile deployment of services like AI, ML, and advanced analytics, enhancing operational efficiency and reducing costs.

Main Challenges

1. Bearer Flexibility: Supports multiple technologies (e.g., 5G, Wi-Fi, satellite), but faces challenges in mapping use cases, network types (private/shared), and ensuring isolation for safety-critical services via network slicing.
2. Dual Operation: Requires coexistence with GSM-R during migration, posing spectrum allocation issues and operational complexities due to limited testing in railway environments.
3. Security: Introduces new threats from virtualization and cloudification, needing robust measures for identity verification, attack prevention, and compliance with industry standards during the transition.

Benefits

FRMCS delivers enhanced connectivity, enabling efficient operations, cost reduction, and innovative services. Benefits include reduced trackside infrastructure, improved asset management, better passenger information, and increased productivity for stakeholders like infrastructure managers and passengers.

Why Now?

GSM-R is approaching obsolescence, with suppliers committed to support until 2030 but no guarantee. Early deployment of FRMCS is crucial to drive down costs, address workforce shortages, and ensure sustainability by enabling modernization in rail operations.

What to Do Now?

Develop a comprehensive migration strategy involving spectrum analysis, RAN planning, and stakeholder coordination. Key actions include rolling stock upgrades, expanding FRMCS coverage, and aligning with ETCS deployment. Early testing and trials are essential for addressing challenges sequentially and paving a smooth migration path.

Conclusion

FRMCS represents a transformative step in rail digitalization, offering significant advantages but requiring proactive planning. It should be viewed as a technological enabler rather than a direct replacement of GSM-R, emphasizing the need for urgent action to harness its full potential and avoid opportunity costs.