| 摘要 |
Provided are a data transmission method, device and system, which relate to the technical field of mobile communications and are used for solving the problem of difficulty in realizing a CA technique that is caused by a relatively large interface bandwidth required when the CA technique is used between devices. A first device is used for serving a main carrier of a user equipment, and the first device comprises: a first unit for processing an RLC layer, a second unit for processing a MAC layer, a third unit for processing a PDCP layer and a first scheduling unit, wherein the first unit comprises: a first control module and a first transition module; a second transition module which is used for receiving scheduling information sent by all the scheduling units in N data packets and the system, acquiring a data packet required to be transmitted on an auxiliary carrier from the N data packets according to all or a part of the received scheduling information, and sending the data packet acquired by the second transition module to a fifth unit. The embodiments of the present invention are applicable to a scenario in which a CA technique is used between devices. |
