Goilips Metro Rail LTE-M Signal Dispatch Private Network Solution

Overview

The signaling and dispatching system of urban rail transit is the central nervous system for safe, high-density, high-speed train operation. As metro networks move to CBTC and LTE-M / EUHT rail private wireless networks, ATC, train-to-ground communication, and real-time train monitoring demand extreme reliability, zero-disconnection tolerance, and sub-millisecond convergence.

Metro tunnel environments are difficult: high-speed trains create strong piston wind pressure and high-frequency vibration, while long enclosed tunnels bring heat, humidity, and electromagnetic interference. A brief optical-link fault in CBTC signaling can trigger emergency braking and cause safety incidents or large-scale delays.

This solution uses Goilips industrial-grade 10G LR / BiDi high-redundancy optical modules with dual-fiber or single-fiber hot standby and dual-homing ring protection to build a rugged, fast-converging 10G signaling backbone between BBU, RRU, and OCC control centers.

Applications

CBTC and Signal Train Control

For real-time ATC/ATP/ATO train-to-ground wireless data exchange between metro trains and OCC control centers.

Metro LTE-M Trunking and Fronthaul

For 10G CPRI/eCPRI fronthaul links between tunnel BBU equipment and densely deployed RRU or leaky coaxial cable systems.

Integrated Supervisory and PIS Systems

For reliable data backhaul of tunnel disaster alarms, environmental monitoring, onboard HD video, and passenger information systems.

Deployment & Architecture

Industrial switches or BBU devices with ERPS/RSTP self-healing capabilities are deployed along both metro tunnel tracks. Each station and interval node uses Goilips 10G dual-fiber or BiDi hot-standby modules to build physically separate A/B redundant networks.

Goilips LTE-M Signal Dispatch Private Network Solution for Urban Rail Transit (Metro)

Primary Dual-Fiber A Network

Core Deployment：Goilips 10G SFP+ LR Ind using 1310nm duplex LC over single-mode dual-fiber links up to 10km.

Advantage：Provides an industrial A/B independent hot-standby path for critical signaling traffic.

Backup / Duct-Constrained B Network

Core Deployment：Goilips 10G BiDi SFP+ Ind using 1270nm/1330nm single-fiber transmission over single-mode fiber up to 10km.

Advantage：Provides single-fiber bidirectional backup while saving 50% fiber resources in crowded tunnel ducts.

Sub-50ms Fast Recovery

Core Deployment：High-speed Loss of Signal detection reports physical-layer faults within microseconds and coordinates with ERPS/RSTP ring protection.

Advantage：Switches to backup links within 50ms when the primary fiber is cut or attenuation becomes abnormal.

Industrial Anti-Vibration and EMC Design

Core Deployment：Uses reinforced metal housings, anti-loosening optical interfaces, DFB lasers, wide-temperature chips, and surge/ESD protection.

Advantage：Operates from -40°C to +85°C and resists piston wind, vibration, and traction-network electromagnetic interference.

Key Benefits

Physical-Layer Foundation for Safe CBTC Operation

Rugged hardware and sub-50ms hot-standby switching eliminate signaling drops caused by optical-link faults and help prevent false emergency braking.

Lower Rail System Lifecycle OpEx

High weather resistance and anti-vibration design reduce tunnel optical-module failure rates and cut dangerous overnight maintenance visits.

High Compatibility with Rail Transit Equipment

Goilips modules are compatible with mainstream industrial switches, BBU, and wireless base-station equipment used in rail transit, simplifying procurement and spare parts.

Ready to get started?

Simplify your network deployment and reduce complexity. Connect with our engineers for a solution design tailored to your project.

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Goilips LTE-M Signal Dispatch Private Network Solution for Urban Rail Transit (Metro)