| 摘要 |
The present invention provides a data transmission method, a data transmission system, a terminal, a control method, a control system and a device with a base station function, wherein the data transmission method comprises: receiving an uplink channel detection sub-frame configuration command from a device with a base station function; according to the uplink channel detection sub-frame configuration command, setting, in the time division duplex mode frame structure, an uplink channel detection sub-frame which is used for periodically detecting whether the uplink channel at the unlicensed frequency band is idle; at any one detection period, sending uplink data through the uplink sub-frame of the frame structure within any one detection period if the uplink channel detection sub-frame detects that the uplink channel is idle. With the technical solution of the present invention, under the premise that the LTE system works normally at the unlicensed frequency band, it is guaranteed that the LTE system can be prevented from generating larger interference on other systems when working at the unlicensed frequency band, and peaceful coexistence of the LTE system and other systems at the unlicensed frequency band is realized. |
