A method for processing data in a flexible duplex cell including a flexible duplex-uplink, FD-UL, carrier and flexible duplex-downlink, FD-DL, carrier, comprising: receiving , by a UE, configuration information of flexible duplex; and according to the received configuration information of flexible duplex, transmitting and receiving data, by the UE, based on uplink and downlink subframe distribution of the flexible duplex cell, on the FD-UL carrier and the FD-DL carrier, wherein if required uplink subframe resources are less than or equal to downlink subframe resources, in one period, some subframes on the FD-UL carrier are downlink subframes, and all subframes on the FD-DL carrier are downlink subframes; if the required uplink subframe resources are more than the downlink subframe resources, in one period, all subframes on the FD-UL carrier are uplink subframes, and some subframes on the FD-DL carrier are uplink subframes; and for the FD-UL carrier and the FD-DL carrier of the flexible duplex cell, the FD-DL carrier is a carrier used for downlink transmission for a backward frequency division duplex, FDD, UE, and the FD-UL carrier is a carrier used for uplink transmission for the backward FDD UE, characterized in measuring a path loss, PL, based on downlink signals on the FD-UL carrier, by the UE, and applying the PL to uplink power control of the UE. receiving , by a UE, configuration information of flexible duplex; and according to the received configuration information of flexible duplex, transmitting and receiving data, by the UE, based on uplink and downlink subframe distribution of the flexible duplex cell, on the FD-UL carrier and the FD-DL carrier, wherein if required uplink subframe resources are less than or equal to downlink subframe resources, in one period, some subframes on the FD-UL carrier are downlink subframes, and all subframes on the FD-DL carrier are downlink subframes; if the required uplink subframe resources are more than the downlink subframe resources, in one period, all subframes on the FD-UL carrier are uplink subframes, and some subframes on the FD-DL carrier are uplink subframes; and for the FD-UL carrier and the FD-DL carrier of the flexible duplex cell, the FD-DL carrier is a carrier used for downlink transmission for a backward frequency division duplex, FDD, UE, and the FD-UL carrier is a carrier used for uplink transmission for the backward FDD UE, characterized in measuring a path loss, PL, based on downlink signals on the FD-UL carrier, by the UE, and applying the PL to uplink power control of the UE. if required uplink subframe resources are less than or equal to downlink subframe resources, in one period, some subframes on the FD-UL carrier are downlink subframes, and all subframes on the FD-DL carrier are downlink subframes; if the required uplink subframe resources are more than the downlink subframe resources, in one period, all subframes on the FD-UL carrier are uplink subframes, and some subframes on the FD-DL carrier are uplink subframes; and for the FD-UL carrier and the FD-DL carrier of the flexible duplex cell, the FD-DL carrier is a carrier used for downlink transmission for a backward frequency division duplex, FDD, UE, and the FD-UL carrier is a carrier used for uplink transmission for the backward FDD UE, characterized in measuring a path loss, PL, based on downlink signals on the FD-UL carrier, by the UE, and applying the PL to uplink power control of the UE. <EOS>