GSM-R/LTE-R Digital Off-Air Repeaters
As a common transportation, Railways transportation increases the carrying capacity, shortens the transportation time and decreases the transportation cost which improve the quality of transportation services, yield greater customer satisfaction, and help to create the socioeconomically balanced societies. And this highly efficient transport mode creates significant challenges in terms of investment, technology, industry, and environment.
To handle increasing traffic, ensure passenger safety, and provide real-time multi-media information, GSM-R communication system and more advanced LTE-R communication system is required. GSM-R is essentially the same system as the GSM but with railway-specific functionalities. The GSM-R network serves as a data carrier for the ETCS, which is the signaling system used for railway control. To provide improved and more efficient transmission for railway communication, LET-R has many advantages over GSM in terms of capacity and capabilities. LTE-R which is based LTE standard will replace GSM-R in the future.
HELIOS® GSM-R/LTE-R Digital Single Band Repeaters employ Software Defined Radio (SDR) technology based upon our FPGA & DSP Platform. This achieves high out of-band rejection and high intra-Carrier interference compared to traditional Analog IF SAW filters. It also enables on-the-fly filter change/upgrade by software without an expensive hardware upgrade.
KEY FEATURES
- GSM-R and LTE-R Standards Compliant
- Full digital software and hardware platform based on SDR technique
- Supports tunable sub-band or channelized filter design
- High working gain Min. 85dB (Customized)
- RF composite power 30dBm, 33dBm, 36dBm and 40dBm for option
- Through per channel and per time-slot AGC/ALC and Squelch functionalities
- RJ-45 Port as LAN port to support IP Web Browser GUI for Local Control
- Additional RJ-45 Port as WAN port to support remote access through Internet/Intranet/VPN
- Built-in 2G/3G/4G wireless modem (Option) for remote monitoring by SMS or Data Link
- Details repeater parameters and status can be monitoring by built-in web interface, such as Door Open, RSSI, temperature, channel switch, PA switch, output power level, gain, ATT, return loss, VSWR etc.
- SNMP V2 & V3 + MIB file supported
- Dry Contact for Alarm External
- IP65 rating and convection cooling
- Light weight and compact size, flexible wall and pole mount.
SYSTEM BLOCK DIAGRAM
APPLICATIONS
To expand railway communication GSM-R/LTE-R signal coverage of fill signal blind area where signal is weak or unavailable or poor data throughput.
- Indoor coverage: Train Station, Offices, Parking lots, Tunnels and Elevators etc.
- Outdoor coverage: Railway Trackside
