Abstract: In the process of carrying out resource allocation management, the 5G subcarrier spacing state causes nonlinear correlation between time-frequency domain resources, resulting in poor delay stability under resource allocation schemes. Therefore, research on 5G time-frequency domain aggregation resource allocation scheme for open-pit mines is proposed. Introducing orthogonal frequency division multiplexing system, using defined physical layer structure values, abstracting resource blocks of 5G time-frequency domain aggregation resources in subcarrier spacing state, and constructing 5G framing structure based on the linear relationship between OFDM values and time-frequency domain resources. After using a training sequence that follows a multidimensional Gaussian distribution to predict the OFDM values in 5G framing, a gradient transfer strategy is adopted to calculate the OFDM values under the current allocation scheme of resource blocks. When the resource allocation gradient converges infinitely close to 0, the output 5G time-frequency domain aggregated resource gradient transfer matrix is used as the final allocation scheme. The test results show that the proposed method corresponds to a delay jitter amplitude of no more than 300.0 us, integrates nonlinear time-frequency domain aggregation resources, and exhibits a high degree of fitting between the delay waveform and the ideal value, demonstrating good stability.