High-speed radio redundancy solution for carriage coupling

Since network wiring between carriages may be difficult or often impossible, particularly in case of refurbishment operations because of aging or poor quality connectors, WiFi has naturally established itself as the most efficient solution by allowing redundancy, reliability and high-speed networking.

ACKSYS’ SRCC solution relies on wireless couplers that only need to be configured once and thus :

  • supports any train composition change
  • provides a redundant and reliable onboard network

SRCC and to train-to-trackside communication combined offer a complete network solution based on wireless to answer any application need : CBTC, CCTV, PIS, passengers WiFi access…

ACKSYS-Carriage-to-carriage-003

 

APPLICATION HIGHLIGHTS

 

> SMART REDUNDANT CARRIAGE COUPLING (SRCC*)
– Redundant onboard network with 2 WiFi couplers at both ends of each carriage
– Self-forming network: automatic carriage association in any order
– Smart pairing system preventing interconnection with neighboring trains networks

> HIGH THROUGHPUT COUPLING 802.11ac (900Mbps)
– To support heavy data transfers (CCTV, infotainment…)

> DIRECT CONNECTION TO TRAIN POWER SUPPLY
– 24-110 VDC insulated dual input power supply, PoE+

 

> DUAL RADIO DEVICES
– One RF for carriage coupling and the other on for in-car WiFi coverage

> RAILWAY HARDENED
– IP66
– Radio : WiFi : EN 300 328 (2.4 GHz), EN 301 893 (5 GHz, DFS) /
LTE : EN 301 908 [-1, -2, -13], EN 301 511, EN 303 413
– EMC : WiFi : EN 301 489 [-1], [-17] / LTE : EN 301 489 [-19], [-52] /
Railway : EN 50155, EN 50121-3.2
– Safety : EN45545-2 (HL3), NF F16-101 (M1F1) (Fire and Smoke), EN60950-1, EN62311
– Environmental : EN61373 (shock & vibration), EN60068 (climatic)

 

* SRCC is also available in non-redundant version with only 2 products by car.

Rugged wireless device tailored for radio carriage coupling

 

 

 

 

RailBoxRailBox
Cellular router or dual WiFi access point
for railways

CHARACTERISTICS
WiFi interface : WiFi 1 : 802.11n or ac – WiFi 2 (optional 2nd radio interface) : 802.11n or ac – 2.4 / 5 GHz
Cellular interface : 2G / 3G / 4G LTE (optional 2nd radio interface) – Dual SIM – Multi-constellation GNSS
Maximum number of clients simultaneously connected in AP mode : 125 per radio (number of clients recommended for an optimal WiFi experience : 60 per radio)
Ethernet interface : 2 x 10/100/1000 – M12
I/O : 1 isolated input – 1 isolated output
Dimensions (mm) : 80 x 175 x 57
Power supply : Dual input – Isolated – 24 to 110 VDC – PoE +
Environment : -25° to +70°C – option -40° to +75°C – IP66
FUNCTIONALITIES
Roaming : < 30 ms
Mesh (802.11s) : YES
Security : Firewall, DoS, https, MAC filtering, WPA/WPA2-Personal & Enterprise (IEEE 802.1X/RADIUS), WEP, tunnels L2 (GRE), VPN (OpenVPN), SNMP V3
Ethernet networking : Frames filtering, bridging, repeater, STP/RSTP, VLAN, DHCP (server & client), DNS relay
Ethernet routing : Multicast (PIM), IP redundancy (VRRP), static routes, NAT router, router
Carriage coupling system SRCC : YES
Administration : http, https, SNMP agent (V1, V2C, V3), WaveManager administration software
Bypass relay option (Daisy Chain Ethernet topologies) : YES
C-Key (hardened memory key/configuration backup) : YES