Link data transmission to a plurality of nodes includes: establishing a tree connection among the plurality of nodes; receiving data to be transmitted at a current node; in the event that the current node receiving the data to be transmitted has at least one child node; sending by the current node the data to be transmitted to one of the at least one child node, and in the event that the current node receiving the data to be transmitted has at least one sibling node that has not obtained the data to be transmitted, sending by the current node the data to be transmitted to one of the at least one sibling node.