Railway & Trackside Connectivity — Wireless Infrastructure for Modern Rail Operations

Rail networks across Europe are undergoing a digital transformation. From next-generation ERTMS signalling to real-time CCTV surveillance and connected passenger services, modern railways demand high-bandwidth, reliable connectivity along hundreds of kilometres of track. Yet the legacy copper and fibre infrastructure that many operators still rely on is increasingly costly to maintain, vulnerable to theft, and incapable of meeting growing bandwidth requirements.

AINSORA's fixed wireless platform offers rail operators a cost-effective alternative that delivers high-capacity, low-latency connectivity without the civil works required to lay new cable.

The Railway Connectivity Challenge

Trackside communication infrastructure faces a unique combination of pressures:

• Cable theft — copper theft is the #1 cause of trackside network outages across Europe, costing operators millions annually in repairs, delays, and compensation
• Aging infrastructure — many lineside cable routes are 30–40 years old, with degraded performance and increasing failure rates
• Bandwidth demands — HD CCTV from hundreds of stations, ERTMS Level 2 signalling data, passenger Wi-Fi backhaul, and IoT sensor feeds have outgrown legacy capacity
• Harsh environment — electromagnetic interference from 25 kV overhead catenary, extreme vibration on bridges, and exposure to all weather conditions
• Regulatory requirements — safety-critical signalling demands low latency and high availability with full redundancy

AINSORA's Trackside Wireless Solution

PTP Backbone Along the Rail Corridor

AINSORA PTP radios — including the M20 (Wi-Fi 7, simultaneous 5 GHz + 6 GHz MLO) and Grid 30 (Wi-Fi 6, 5 GHz, 30 dBi high-gain antenna) — form the backbone of the trackside network:

• Up to 2 Gbps full-duplex capacity — sufficient for aggregated CCTV, signalling, and passenger services
• Distances up to 30 km between nodes — minimising the number of installation points along the route
• Low-latency design — targeting the sub-5ms latency required by ERTMS Level 2 and Level 3 signalling specifications
• Dual-path redundancy — parallel links at critical junctions designed for fast automatic failover with minimal service interruption
• EMI planning — RF design accounts for interference from 25 kV traction power systems

PTMP for Station and Depot Coverage

AINSORA PTMP sectors (Sector 120) extend connectivity across wider areas:

• Station Wi-Fi backhaul — aggregate passenger and staff Wi-Fi from multiple platforms to the backbone
• Marshalling yard coverage — mobile worker connectivity for shunting operations, maintenance crews, and asset tracking
• Depot management — wireless connectivity for train diagnostic systems, predictive maintenance data upload, and fleet management

Mounting and Installation

AINSORA equipment is designed for rapid deployment on existing railway infrastructure:

• Signal gantry mounting — compact, lightweight units attach to existing structures with no modifications needed
• Station rooftop installation — standard pole mounts compatible with all building types
• Bridge-mounted nodes — IP67 enclosures with vibration-dampened brackets for high-vibration environments
• Zero new civil works — no trenching, no cable laying, no track possessions required for installation

Centralised Network Management with NexOS

• Single-pane-of-glass monitoring — all trackside links managed from the national operations centre
• Real-time link health dashboards — throughput, latency, signal quality, and availability KPIs per link
• Predictive maintenance alerts — detect signal degradation trends before they cause outages
• Automated fault localisation — identify the exact link and node affected within seconds
• Integration with rail SCADA — SNMP v2c/v3 traps feed directly into existing rail operations systems
• Scheduled KPI reports — daily, weekly, and monthly availability reports for regulatory compliance

Deployment Architecture

A typical trackside wireless deployment follows a linear topology with redundancy:

1. Core Connection — Fibre or high-capacity microwave link at the central control centre
2. PTP Backbone Chain — Links installed every 10–30 km along the route, connecting station after station
3. Ring Topology at Junctions — Where lines converge, dual-path rings ensure no single point of failure
4. PTMP Overlays — Sector coverage at major stations, depots, and marshalling yards
5. Relay Nodes — At curves and tunnel portals where line-of-sight cannot be maintained directly

Applications Supported

ERTMS Signalling (Safety-Critical)

• Low-latency wireless architecture designed to meet ERTMS Level 2 radio block centre communication requirements
• Dual-path redundancy targeting high availability for safety-critical signalling traffic paths
• Deterministic QoS prioritisation — signalling traffic takes priority over all other services on the shared backhaul

CCTV and Video Surveillance

• HD and 4K video streams from station platforms, car parks, and lineside cameras
• Centralised recording at the operations centre with live monitoring capability
• Support for video analytics (crowd detection, unattended baggage, platform edge monitoring)

Passenger Information Systems

• Real-time train arrival/departure data pushed to platform displays
• Public address system integration over IP
• Emergency communication broadcast capability

Operational Communications

• Voice over IP for crew and maintenance team communications
• Mobile data for handheld devices used by trackside workers
• IoT sensor data from point machines, track circuits, and environmental monitors

Passenger Wi-Fi Backhaul

• Aggregate Wi-Fi traffic from stations and on-board systems
• Seamless handoff as trains pass through PTMP coverage zones
• Bandwidth management ensuring passenger services never impact safety-critical traffic

Performance Design Targets

Financial Benefits

Replacing copper with wireless infrastructure delivers significant cost advantages:

• Elimination of cable theft losses — the single largest operational cost saving, typically €2–5M annually for a national operator
• No civil works or track possessions — installation during normal operating hours, no need to close the line
• Significantly faster deployment — a 100 km section can typically be equipped in weeks rather than the months required for cable infrastructure
• Reduced maintenance costs — remote diagnostics and firmware updates reduce the need for physical line inspections
• Scalable bandwidth — add capacity by upgrading firmware or adding sectors, no new cable runs

Compliance and Certifications

• EN 50121-4 — EMC for signalling and telecommunications apparatus in the railway environment
• EN 45545-2 — Fire protection for railway vehicles and infrastructure equipment
• IP67 — Dust and water protection
• IEC 61373 — Vibration and shock resistance for railway equipment
• CE, FCC — Core regulatory certifications for primary markets

Talk to AINSORA About Trackside Network Design

Whether you are replacing aging copper cable, extending coverage to new routes, or specifying wireless infrastructure for an ERTMS migration, AINSORA's rail solutions team can help develop an architecture suited to your corridor, service mix, and regulatory environment.

• Start a trackside design conversation — info@ainsora.com
• Talk to our solutions team — describe your corridor length, service types, and existing infrastructure