Configuration method, system and equipment of multi-level shared cell and storage medium

The invention provides a multi-level shared cell configuration method, system and device and a storage medium, and the method comprises the steps: building a first transmission layer connection between a communication distributed unit and a first-level communication extension unit, the first-stage communication expansion unit is directly connected with the communication radio frequency unit of the first shared cell and is cascaded with the communication radio frequency unit of the second shared cell through the second-stage communication expansion unit; establishing a mapping relation of a physical interface of each communication radio frequency unit from a north port to a south port; and performing uplink merging or downlink copying of the same-level communication radio frequency units based on the mapping relation. According to the invention, the communication expansion unit can be directly connected with the shared cell of the communication radio frequency unit and can be cascaded with the configuration of