In recent years, Chinese railway has gone through the technical improvements on heavy haul traffic, electrification and conventional line updation to the speed-rail and Passenger Dedicated Line (PDL). Da-Qin railway is the first double-track electrified railway in China, which combined the LOCOTROL and GSM-R techniques together. Da-Qin railway transported LOCOTROL information by GSM-R network for the first time in the world. This technology successfully applied in 4×5000 tons heavy-duty train, solved the key issues of train to train communication distances limitation, provide a strong protection for transportation coal. GSM-R network has to be optimized after its operation, through adjustment of parameters to reach the best service state of the network, ensure the safety and order of railway traffic.Because of the particularity of rail transportation, the optimization of GSM-R network is of great importance.
