A resource configuration method, comprising: receiving , by user equipment, UE, configuration information of an acknowledgement response resource, wherein the acknowledgement response resource is used by the UE to send a downlink data channel acknowledgement response of an n th transmission unit on an uplink control channel of an (n + k) th transmission unit, the configuration information comprises first information, the first information is used to indicate a quantity of transmission units located before the n th transmission unit in a feedback window of the (n + k) th transmission unit, the feedback window is a set of all transmission units for which a downlink data channel acknowledgement response needs to be sent on the uplink control channel of the (n + k) th transmission unit, the n th transmission unit is one of all the transmission units, k is an integer, and n is an integer; determining , by the UE, a physical uplink control channel, PUCCH, resource index of the downlink data channel acknowledgement response of the n th transmission unit in the (n + k) th transmission unit based on the quantity of transmission units that is carried in the configuration information; determining , by the UE, an acknowledgment response resource corresponding to the PUCCH resource index; and sending , by the UE, the downlink data channel acknowledgement response of the n th transmission unit on the uplink control channel of the (n + k) th transmission unit by using the acknowledgement response resource, the method characterised in that the acknowledgement response resource is mapped to the uplink control channel of the (n + k) th transmission unit first in ascending order of subcarrier indexes and then in descending order of symbol indexes. receiving , by user equipment, UE, configuration information of an acknowledgement response resource, wherein the acknowledgement response resource is used by the UE to send a downlink data channel acknowledgement response of an n th transmission unit on an uplink control channel of an (n + k) th transmission unit, the configuration information comprises first information, the first information is used to indicate a quantity of transmission units located before the n th transmission unit in a feedback window of the (n + k) th transmission unit, the feedback window is a set of all transmission units for which a downlink data channel acknowledgement response needs to be sent on the uplink control channel of the (n + k) th transmission unit, the n th transmission unit is one of all the transmission units, k is an integer, and n is an integer; determining , by the UE, a physical uplink control channel, PUCCH, resource index of the downlink data channel acknowledgement response of the n th transmission unit in the (n + k) th transmission unit based on the quantity of transmission units that is carried in the configuration information; determining , by the UE, an acknowledgment response resource corresponding to the PUCCH resource index; and sending , by the UE, the downlink data channel acknowledgement response of the n th transmission unit on the uplink control channel of the (n + k) th transmission unit by using the acknowledgement response resource, the method characterised in that the acknowledgement response resource is mapped to the uplink control channel of the (n + k) th transmission unit first in ascending order of subcarrier indexes and then in descending order of symbol indexes. <EOS>