A data transmission method, executed by a first node in simultaneous communication with N second nodes and comprising: configuring at least one transmission parameter for the N second nodes sending radio frames in an uplink multi-user transmission, wherein N is a positive integer and each radio frame comprises a common preamble and a data payload, and the transmission parameter comprises at least one of: a repetition mode of a preset signaling field, a phase rotation mode of one or more sub-channels of the common preamble, a cyclic shift diversity parameter of a respective transmission chain of the common preamble, and a transmission mode, and wherein the transmission mode comprises a normal transmission mode or a Dual Carrier Modulation, DCM, transmission mode, wherein the common preamble is a preamble that the first node receives from each of N second nodes simultaneously communicating with the first node and common preambles received by the first node from the N second nodes have same content; sending at least one trigger frame or trigger information to the N second nodes, wherein an information field associated with the at least one transmission parameter is carried in the at least one trigger frame or trigger information; and receiving at least one radio frame which is sent from at least one of the N second nodes. configuring at least one transmission parameter for the N second nodes sending radio frames in an uplink multi-user transmission, wherein N is a positive integer and each radio frame comprises a common preamble and a data payload, and the transmission parameter comprises at least one of: a repetition mode of a preset signaling field, a phase rotation mode of one or more sub-channels of the common preamble, a cyclic shift diversity parameter of a respective transmission chain of the common preamble, and a transmission mode, and wherein the transmission mode comprises a normal transmission mode or a Dual Carrier Modulation, DCM, transmission mode, wherein the common preamble is a preamble that the first node receives from each of N second nodes simultaneously communicating with the first node and common preambles received by the first node from the N second nodes have same content; wherein N is a positive integer and each radio frame comprises a common preamble and a data payload, and the transmission parameter comprises at least one of: a repetition mode of a preset signaling field, a phase rotation mode of one or more sub-channels of the common preamble, a cyclic shift diversity parameter of a respective transmission chain of the common preamble, and a transmission mode, and wherein the transmission mode comprises a normal transmission mode or a Dual Carrier Modulation, DCM, transmission mode, wherein the common preamble is a preamble that the first node receives from each of N second nodes simultaneously communicating with the first node and common preambles received by the first node from the N second nodes have same content; sending at least one trigger frame or trigger information to the N second nodes, wherein an information field associated with the at least one transmission parameter is carried in the at least one trigger frame or trigger information; and receiving at least one radio frame which is sent from at least one of the N second nodes.