Refresh Power Bi report best way

Hi there,

I'm facing with a heavy doubt.

I created I power Bi report  and I published it in my Power BI server.

The report is build on a SSAS tabular model (direct query off) BUT using a direct query approach to my SSAS databse.

I think that because I not imported from my SSAS database the data I cannot schedule the refresh in Power BI report.

There are any other approach to follow ?

In other platform - like SAP business objects for example - we can schedule report in order to get quickly a result.

Are any similar in Power BI server ?

thanks a lot.