Delivering a reliable and seamless mobile communications for underground subway and tunnels presents operators with many challenges due to the limitation of RF propagation and penetration. For the most part subscribers in these areas are unable to receive mobile signals to establish a call connection. In order to provide coverage to these areas, a cost effective and reliable solution may come from a RF or fiber optical repeater.
Deployment example 1:A 4km tunnel is served with two 5W repeaters.
As the diagram illustrates, donor antennas are located on both ends of the tunnel. Signals received from the BTS are amplified and then projected into the tunnel through the service antenna, providing coverage to the length of the tunnel.
Deployment example 2: Fiber Optical Repeater with micro-cell
Solution to provide coverage to underground sub-ways, a mix of micro-cell and fiber optical repeater will enable an operator to provide full coverage to the underground subway network.
With the fiber optical repeaters, consisting of a master and a remote unit, signal is tapped from the micro-cell, where the master unit will convert to an optical signal for transport down the fiber cable to the remote unit; in turn the remote unit will re-convert the optical signal back to RF signal and boost the signal for distribution via antennas or leaky cables providing further coverage in the subway.
Please refer to the following products:
GSM/DCS Repeater
Single Band DCS/GSM Repeater 33dBm (R23DB0-GSM), Single Band DCS/GSM Repeater 37dBm (R24DB0-GSM), Single Band DCS/GSM Repeater 40dBm (R25DB0-GSM),
Single Band DCS/GSM Repeater 43dBm (R27FB0-GSM), Double Band DCS/GSM Repeater 33dBm (R23DB0-GSM-DB), Double Band DCS/GSM Repeater 37dBm (R24DB0-GSM-DB),
Double Band DCS/GSM Repeater 40dBm (R25FB0-GSM-DB), Fiber Optical DCS/GSM Repeater 33dBm (F23DE0-GSM), Fiber Optical DCS/GSM Repeater 37dBm (F24DE0-GSM),
Fiber Optical DCS/GSM Repeater 40dBm (F25FE0-GSM), Fiber Optical DCS/GSM Repeater 43dBm (F27FE0-GSM)CDMA Repeater
Single Band CDMA Repeater 33dBm (R23DB0-CDMA), Single Band CDMA Repeater 37dBm (R24DB0-CDMA), Single Band CDMA Repeater 40dBm (R25FB0-CDMA),
Double Band CDMA Repeater 33dBm (R23DB0-CDMA-DB), Double Band CDMA Repeater 37dBm (R24DB0-CDMA-DB), Double Band CDMA Repeater 40dBm (R25FB0-CDMA-DB)WCDMA Repeater
3G Repeater for Band 33dBm (R23DB0-WCDMA), 3G Repeater for Band 37dBm (R24FB0-WCDMA), 3G Repeater for Band 40dBm (R25FB0-WCDMA),
3G Repeater for Channel 33dBm (R43DB0-WCDMA-2C), 3G Repeater for Channel 37dBm (R44FB0-WCDMA-2C)
GSM+DCS repeater
GSM+DCS Dual Band Mobile Repeater 33dBm (R23DA0-GD), GSM+DCS Dual Band Mobile Repeater 37dBm (R24FA0-GD) |
