As train operations move towards increasingly computerized Unattended Train Operations (UTO), trackside control centers must process additional data, including video feeds from front and rear-facing cameras on the train. These additional processes consume more bandwidth, and need more robust Train-to-Ground (T2G) links to support them. But even as bandwidth requirements grow, the existing challenging requirements of T2G operations - mobility, low latency, and reliability - remain. In this white paper, we review four useful technologies that help system operators bring a seemingly insurmountable task down to size.