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.