A wireless communication method, comprising: receiving a first TPC-radio network temporary identifier, TPC-RNTI, a second TPC-RNTI, and first indication information that are sent by the base station, wherein the first indication information is used to indicate that: a first PDCCH that is scrambled by the first TPC-RNTI and whose format is the DCI format 3/3A is used to carry a first TPC command; and a second PDCCH that is scrambled by the second TPC-RNTI and whose format is the DCI format 3/3A is used to carry a second TPC command; receiving, in a fixed downlink subframe whose subframe number is i - K UL, the first PDCCH and/or the second PDCCH that are/is sent by the base station, and acquiring the first TPC command from the first PDCCH, and/or acquiring the second TPC command from the second PDCCH, wherein at least one TPC command comprises a TPC command for an uplink signal sent in a flexible uplink subframe whose subframe number is i, wherein if more than one TPC command is sent then different TPC commands are used to indicate transmit power of uplink signals that are sent in different uplink subframes, and the uplink signal is a physical uplink shared channel PUSCH or a sounding reference signal SRS; determining, according to the TPC command for the uplink signal sent in the uplink subframe whose subframe number is i, transmit power of the uplink signal that is sent in the uplink subframe whose subframe number is i, wherein the uplink subframe whose subframe number is i is the ( K UL) th subframe that is after the fixed downlink subframe whose subframe number is i - K UL, wherein a value of K UL is a value defined in LTE time division duplex, TDD uplink-downlink subframe configuration 0 and the time sequence relationship defined by K UL is used for any LTE TDD system uplink-downlink subframe configuration; and sending, according to the transmit power, the uplink signal in the subframe whose subframe number is i. receiving a first TPC-radio network temporary identifier, TPC-RNTI, a second TPC-RNTI, and first indication information that are sent by the base station, wherein the first indication information is used to indicate that: a first PDCCH that is scrambled by the first TPC-RNTI and whose format is the DCI format 3/3A is used to carry a first TPC command; and a second PDCCH that is scrambled by the second TPC-RNTI and whose format is the DCI format 3/3A is used to carry a second TPC command; receiving, in a fixed downlink subframe whose subframe number is i - K UL, the first PDCCH and/or the second PDCCH that are/is sent by the base station, and acquiring the first TPC command from the first PDCCH, and/or acquiring the second TPC command from the second PDCCH, wherein at least one TPC command comprises a TPC command for an uplink signal sent in a flexible uplink subframe whose subframe number is i, wherein if more than one TPC command is sent then different TPC commands are used to indicate transmit power of uplink signals that are sent in different uplink subframes, and the uplink signal is a physical uplink shared channel PUSCH or a sounding reference signal SRS; determining, according to the TPC command for the uplink signal sent in the uplink subframe whose subframe number is i, transmit power of the uplink signal that is sent in the uplink subframe whose subframe number is i, wherein the uplink subframe whose subframe number is i is the ( K UL) th subframe that is after the fixed downlink subframe whose subframe number is i - K UL, wherein a value of K UL is a value defined in LTE time division duplex, TDD uplink-downlink subframe configuration 0 and the time sequence relationship defined by K UL is used for any LTE TDD system uplink-downlink subframe configuration; and sending, according to the transmit power, the uplink signal in the subframe whose subframe number is i.