A data sending method in a heterogeneous network, comprising: carrying, by a macro base station, BS, access-control information in a subframe, and sending the access-control information to a user equipment, UE on a control-frequency band; configuring, by the macro BS for the UE, a low power node, LPN, as a serving LPN that provides service to the UE, according to Reference Signal Received Power, RSRP, and Reference Signal Received Quality, RSRQ, measured by the UE on a data-frequency band, and notifying the UE on the control-frequency band through downlink signaling; generating, by the macro BS, a scheduling result for the serving LPN or the UE according to channel state information, CSI, between the UE and the serving LPN that is reported by the UE; and carrying in the subframe, by the macro BS, control information generated according to the scheduling result, and sending the control information to the UE on the control-frequency band; notifying, by the macro base station, the LPN of the control information; and carrying, by the LPN, data information in a subframe according to the control information, and sending the data information to the UE on the data-frequency band, wherein the control-frequency band and the data-frequency band are configured statically, all Orthogonal Frequency Division Multiplexing, OFDM, symbols at the macro BS are used to carry the control information, the data-frequency band is used by the LPN to send data information to the UE according to the control information, all OFDM symbols at the LPN are used to carry the data information, and the control-frequency band and the data-frequency band are on different bandwidth portions of the same carrier; or the control-frequency band and the data-frequency band are on different carriers, the generating, by the macro BS, a scheduling result for the serving LPN or the UE according to CSI between the UE and the serving LPN that is reported by the UE comprises: sending, by the macro BS, the CSI to the serving LPN; and scheduling the UE, by the serving LPN, according to the CSI, and sending the scheduling result for the UE to the macro BS. carrying, by a macro base station, BS, access-control information in a subframe, and sending the access-control information to a user equipment, UE on a control-frequency band; configuring, by the macro BS for the UE, a low power node, LPN, as a serving LPN that provides service to the UE, according to Reference Signal Received Power, RSRP, and Reference Signal Received Quality, RSRQ, measured by the UE on a data-frequency band, and notifying the UE on the control-frequency band through downlink signaling; generating, by the macro BS, a scheduling result for the serving LPN or the UE according to channel state information, CSI, between the UE and the serving LPN that is reported by the UE; and carrying in the subframe, by the macro BS, control information generated according to the scheduling result, and sending the control information to the UE on the control-frequency band; notifying, by the macro base station, the LPN of the control information; and carrying, by the LPN, data information in a subframe according to the control information, and sending the data information to the UE on the data-frequency band, wherein the control-frequency band and the data-frequency band are configured statically, all Orthogonal Frequency Division Multiplexing, OFDM, symbols at the macro BS are used to carry the control information, the data-frequency band is used by the LPN to send data information to the UE according to the control information, all OFDM symbols at the LPN are used to carry the data information, and the control-frequency band and the data-frequency band are on different bandwidth portions of the same carrier; or the control-frequency band and the data-frequency band are on different carriers, the generating, by the macro BS, a scheduling result for the serving LPN or the UE according to CSI between the UE and the serving LPN that is reported by the UE comprises: sending, by the macro BS, the CSI to the serving LPN; and scheduling the UE, by the serving LPN, according to the CSI, and sending the scheduling result for the UE to the macro BS. sending, by the macro BS, the CSI to the serving LPN; and scheduling the UE, by the serving LPN, according to the CSI, and sending the scheduling result for the UE to the macro BS.