A data transmission control method, comprising: receiving (S101, S307, S402, S502), by a radio communication node, a data packet of a transport protocol layer from a base station, wherein a Packet Data Convergence Protocol protocol data unit, PDCP PDU, of the base station is encapsulated in the data packet; acquiring (S102, S308, S403, S503), by the radio communication node, the PDCP PDU encapsulated in the data packet; and generating, by the radio communication node, at least one Radio Link Control packet data unit, RLC PDU, wherein the PDCP PDU is encapsulated in the at least one RLC PDU; sending (S103, S309, S404, S504), by the radio communication node, to a user equipment, UE, the at least one RLC PDU; receiving (S104, S310, S405, S505), by the radio communication node, a second status report from the user equipment, wherein the second status report is used to indicate whether the user equipment successfully receives the at least one RLC PDU; and sending (S105, S311, S406, S506), by the radio communication node, a first status report to the base station, wherein if the second status report indicates that the user equipment successfully receives the at least one RLC PDU, the first status report indicates that the PDCP PDU is successfully sent to the user equipment;; wherein a user plane connection is established between the radio communication node and the user equipment, and a control plane connection is established between the base station and the user equipment; and the radio communication node is a macro base station, a small-cell base station, a micro base station, a relay node, a home base station, or a transmission point that has a scheduling function; wherein the data packet of the transport protocol layer, in which the PDCP PDU is encapsulated, is a data packet of a GPRS tunnelling protocol for the user plane (GTP-U). receiving (S101, S307, S402, S502), by a radio communication node, a data packet of a transport protocol layer from a base station, wherein a Packet Data Convergence Protocol protocol data unit, PDCP PDU, of the base station is encapsulated in the data packet; acquiring (S102, S308, S403, S503), by the radio communication node, the PDCP PDU encapsulated in the data packet; and generating, by the radio communication node, at least one Radio Link Control packet data unit, RLC PDU, wherein the PDCP PDU is encapsulated in the at least one RLC PDU; sending (S103, S309, S404, S504), by the radio communication node, to a user equipment, UE, the at least one RLC PDU; receiving (S104, S310, S405, S505), by the radio communication node, a second status report from the user equipment, wherein the second status report is used to indicate whether the user equipment successfully receives the at least one RLC PDU; and sending (S105, S311, S406, S506), by the radio communication node, a first status report to the base station, wherein if the second status report indicates that the user equipment successfully receives the at least one RLC PDU, the first status report indicates that the PDCP PDU is successfully sent to the user equipment;; wherein a user plane connection is established between the radio communication node and the user equipment, and a control plane connection is established between the base station and the user equipment; and the radio communication node is a macro base station, a small-cell base station, a micro base station, a relay node, a home base station, or a transmission point that has a scheduling function; wherein the data packet of the transport protocol layer, in which the PDCP PDU is encapsulated, is a data packet of a GPRS tunnelling protocol for the user plane (GTP-U).