Algorithm 1 Location based uplink power control algorithm

Require: Train location in neighboring cells and their PRB resource information; allocated resources in this TAU Ensure: TAU calculates the transmit power $P_I$ in according to its location and neighboring cells information 1:if The calculated transmit power $P_I$ after path loss compensation is greater than the maximum transmit power $P_{CMAX}$ then 2:   TAU selects the maximum transmit power $P_{CMAX}$ and the corresponding MCS mechanism; 3:else 4:   TAU selects the calculated transmit power $P_I$ and the corresponding MCS mechanism; 5:end if 6:return The ultimate transmit power and MCS mechanism