Standalone Camera without access to Power and Wifi

Hello, I'll first start by explaining my need...I have an outdoor shed that is on some remote property that has no access to power and has no internet connection. I would like to have the ability to stand up a standalone camera to be used with the need for either of those but can communicate via LTE. I know the camera can be powered with a solar panel, however I'm under the impression that I would still need to have a base station to communicate with the camera. The solar panels will not connect to said base stations. Is there another option for me that I haven't stumbled across? TIA