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.