Communication method and device and storage medium

The invention discloses a communication method and device and a storage medium, and relates to the technical field of communication. The method may be performed by a network device. The method comprises the following steps: determining a first downlink transmission parameter of first terminal equipment according to the state of a downlink channel of the first terminal equipment, wherein the first downlink transmission parameter comprises a first Rank; determining a first RB number occupied by downlink data of the first terminal device according to the first downlink transmission parameter; determining the number of first remaining RBs according to the number of the distributable RBs and the number of the first RBs; if the first terminal device at least meets the first condition, downlink data transmission is performed on the first terminal device based on a second downlink transmission parameter, the second downlink transmission parameter comprises a second Rank, and the number of spatial multiplexing streams