The data transmission for long tunnels is achieved by constructing a tunnel wireless network system. The tunnel environment is complex and dynamic, making it challenging to set up 4G and 5G networks. During tunnel construction, laying and maintaining optical fibers is also difficult. To meet the network needs of tunnel construction, we have independently developed a long tunnel wireless network system based on wireless communication technology: wireless base stations are installed inside the tunnel, and these stations are connected wirelessly through a MESH self-organizing network, forming a local area network for wireless coverage within the tunnel.
　　The data such as locomotive video, position and speed in the tunnel, as well as the data collected by the front-end equipment in the tunnel, can be transmitted to the system server through the self-organizing network of the long tunnel. After parsing, it is displayed intuitively on the interface of the railway traffic safety dispatching management system platform.