Outdoor-to-indoor (O2I) coverage in urban areas by using the sub-6 GHz (sub-6G) band is important in the fifth generation (5G) mobile communication system. The spatial-temporal propagation characteristics in different polarizations in the 5G spectrum are crucial for the network coverage. In this paper. we measured the urban macrocell (UMa) O2I channels at 3. https://www.greenresourcesredux.com/product-category/lids/