Capgemini-未来铁路移动通信系统（英）-2023-14页_2mb

Future Railway Mobile Communication Systems (FRMCS)

Digitalization of Railway

Digitalization in railway involves replacing outdated mechanical systems with interconnected digital ones. These systems require high-bandwidth communications, service-oriented architectures, and safety-critical cloud infrastructure to enable innovative services and reduce trackside infrastructure. Advanced connectivity underpins AI, ML, and advanced analytics for operational improvements and business value.

Legacy GSM-R (2G-based) is insufficient: limited data throughput, high maintenance costs, and inability to support modern ETCS/ATO systems. It is approaching obsolescence, with suppliers committing support until 2030. Replacement is necessary for a fully digital railway.

What is FRMCS?

FRMCS, designed by the International Union of Railways (UIC), is a global standard replacing GSM-R. It uses 5G technology with a software-driven platform for agile service introduction, including network slicing and open architecture. It targets GSM-R replacement within 7-10 years, offering future-proof connectivity for railway digitalization.

Key Aspects of FRMCS

• Three Strata: Railway Application, Service, and Transport Strata.
• Operator Benefits: Enables intelligent traffic management, automated operations, connected infrastructure monitoring, reducing costs and increasing efficiency.
• Complexity: Subject to extensive testing, safety requirements, and technological hurdles like carrier aggregation and 5G integration.

FRMCS Challenges

1. Bearer Flexibility: Support for various access technologies (5G, Wi-Fi, Satellite) requires end-to-end architecture design and handles safety-isolated network slicing.
2. Dual Operation: Coexistence of FRMCS and GSM-R during migration, governed by spectrum availability and deployment (private vs shared).
3. Security: Robust protection required for mission-critical services, responding to threats related to cloudification, software vulnerabilities, and network slicing.

Why Now?

GSM-R is becoming obsolete (expensive maintenance, skills shortage). Early FRMCS deployment can lower costs, improve efficiency, and enable innovative services sooner. Strategic migration planning is crucial for impactful digitalization.

What to Do Now?

• Develop Migration Strategy: Address spectrum, RAN planning, dimensioning, and sharing analysis early.
• Baseline Plan: Coordinate upgrades across trackside (FRMCS rollout) and rolling stock (train communication modifications).
• Harmonize GSM-R/FrmCS: Align ETCS upgrades with FRMCS requirements to leverage synergy.

Conclusion

FRMCS offers transformative benefits for railway digitalization using 5G. A clear, agile migration strategy, early trials, and collaboration among stakeholders are essential to transition smoothly from GSM-R to FRMCS. (Disclaimer: Content based on report analysis, not original creation and may contain commercial sensitivities.)