Data processing method, device and system

The invention discloses a data processing method, device and system. The method comprises the following steps that: a base station obtains a UE capability reporting message including a specific FGI bit and sent by the early version of TD-LTE terminal; whether the terminal supports specific sub-frame configuration or not is judged according to the FGI bit; or, the base station dispatches downlink transmission to the terminal on a DwPTS; if correct feedback for the downlink transmission is received, the fact that the terminal supports specific sub-frame configuration is determined; or, the base station judges whether the terminal is a roaming terminal or not; and if not, the fact that the terminal supports specific sub-frame configuration is determined. By means of the embodiment of the invention, the base station can determine whether an R9/10 terminal supports newly increased specific sub-frame configuration in Rel11 or not, and perform downlink transmission on this basis; and thus, the downlink transmission effectiveness can be effectively improved.