Metro/Tunnel Signal Coverage Cases

Case 1

This is a newly built section of Shenzhen Metro, and we are responsible for a 5km long underground railway between two platforms this time;

Through testing, we provide the following solutions:

Channel 1: 1 set of 10W optical fibre MU unit + 1 point 4 fibre splitter + 4 sets of 10W tri-band optical fibre RU units;

Channel 2: 1 set of 10W optical fibre MU unit + 1 point 4 fibre splitter + 4 sets of 10W tri-band optical fibre RU units;

The interval between each optical fibre RU unit is 1.2km, and the flat antennas at the left and right ends are 700m away from the exit, so as to prevent signal overflow from causing external interference;

Because the construction site is close to the company, our engineering staff also with the underground construction workers into the site for construction, the following from the project construction site photos:

Receiving antenna and fibre optic proximity unit installation:

Transmitter antenna installation in the tunnel:

Case 2

This is the China Railway Bureau in Jiangxi Liangziping tunnel project, the tunnel length of 2km, we use a 14dBi flat panel receiving antenna + 1 set of 20W fibre optic tri-band RU/MU combination + 2PCS 17dBi flat panel transmitting antenna collocation, to achieve full signal coverage in the tunnel!

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