A data transmission method for a wireless cellular network comprising at least one first node and at least one second node and multiple terminal devices in a cell, wherein both the first node and the second node have a scheduling function, and the method comprises: establishing, by the second node, a radio resource control, RRC, connection with a respective terminal device of the multiple terminal devices, determining, by the second node, first indication information based on basic information of the terminal device and/or network information, and sending the first indication information to the first node, wherein the first indication information is used for indicating whether the terminal device is scheduled by the first node or is scheduled by the second node; and if the first indication information indicates that the terminal device is scheduled by the first node, sending, by the second node to the first node, a data packet for the terminal device that was received by the second node from a service gateway, SGW, and that has not been processed by using the scheduling function of the second node; or else if the first indication information indicates that the terminal device is scheduled by the second node, sending, by the second node to the first node, a data packet for the terminal device that was received by the second node from the SGW and that has been processed by using the scheduling function of the second node; wherein the first indication information further comprises a bearer type indication, wherein the bearer type indication is used for indicating that a type of the data packet transmitted between the second node and the first node on an established bearer between the first node and the second node is a IP Protocol Data Unit, PDU, or a Packet Data Convergence Protocol, PDCP, PDU or a Media Access Control, MAC, PDU or physical, PHY, layer data, and the bearer type indication is used for indicating whether the terminal device is scheduled by the first node or is scheduled by the second node. establishing, by the second node, a radio resource control, RRC, connection with a respective terminal device of the multiple terminal devices, determining, by the second node, first indication information based on basic information of the terminal device and/or network information, and sending the first indication information to the first node, wherein the first indication information is used for indicating whether the terminal device is scheduled by the first node or is scheduled by the second node; and if the first indication information indicates that the terminal device is scheduled by the first node, sending, by the second node to the first node, a data packet for the terminal device that was received by the second node from a service gateway, SGW, and that has not been processed by using the scheduling function of the second node; or else if the first indication information indicates that the terminal device is scheduled by the second node, sending, by the second node to the first node, a data packet for the terminal device that was received by the second node from the SGW and that has been processed by using the scheduling function of the second node; wherein the first indication information further comprises a bearer type indication, wherein the bearer type indication is used for indicating that a type of the data packet transmitted between the second node and the first node on an established bearer between the first node and the second node is a IP Protocol Data Unit, PDU, or a Packet Data Convergence Protocol, PDCP, PDU or a Media Access Control, MAC, PDU or physical, PHY, layer data, and the bearer type indication is used for indicating whether the terminal device is scheduled by the first node or is scheduled by the second node.