Methods, apparatuses, devices, systems, and storage mediums for slot format indication are provided. The method includes sending, in response to detecting that a target channel is in an idle state, slot format indication information to UE through a target channel. The slot format indication information being configured to indicate link formats of N symbols included in a target partial slot, and N being a positive integer less than 14. The target partial slot is located in a time period during which a base station occupies the target channel, and the target channel is located on an unlicensed spectrum.