A wireless communications method, applied in a 5G network, or a network device in an evolved public land mobile network, PLMN, characterized by comprising: determining a second time unit according to a time domain location of at least one of a plurality of first time units used to transmit data; and transmitting feedback information by using the second time unit, wherein the feedback information is feedback information for the data transmitted in the plurality of first time units; wherein determining the second time unit according to the time domain location of at least one of the plurality of first time units used to transmit data comprises: in a case that granularity of a first time unit of the plurality of first time units is the same as granularity of the second time unit and the first time unit and the second time unit are slots, determining the second time unit according to a time domain location of a last one of the plurality of first time units used to transmit a transport block, TB, repeatedly for a plurality of times, wherein the granularity comprises a symbol, a slot, a sub-slot, a half-slot, or a subframe; and in a case that the granularity of the first time unit of the plurality of first time units is different from the granularity of the second time unit, determining the second time unit according to a time domain location of a second time unit to which the at least one of the plurality of first time units belongs, wherein the second time unit used to transmit the feedback information is an (n+k) th second time unit, n and k are positive integers, and an n th second time unit is a second time unit to which the last one of the plurality of first time units belongs. determining a second time unit according to a time domain location of at least one of a plurality of first time units used to transmit data; and transmitting feedback information by using the second time unit, wherein the feedback information is feedback information for the data transmitted in the plurality of first time units; wherein determining the second time unit according to the time domain location of at least one of the plurality of first time units used to transmit data comprises: in a case that granularity of a first time unit of the plurality of first time units is the same as granularity of the second time unit and the first time unit and the second time unit are slots, determining the second time unit according to a time domain location of a last one of the plurality of first time units used to transmit a transport block, TB, repeatedly for a plurality of times, wherein the granularity comprises a symbol, a slot, a sub-slot, a half-slot, or a subframe; and in a case that the granularity of the first time unit of the plurality of first time units is different from the granularity of the second time unit, determining the second time unit according to a time domain location of a second time unit to which the at least one of the plurality of first time units belongs, wherein the second time unit used to transmit the feedback information is an (n+k) th second time unit, n and k are positive integers, and an n th second time unit is a second time unit to which the last one of the plurality of first time units belongs. in a case that granularity of a first time unit of the plurality of first time units is the same as granularity of the second time unit and the first time unit and the second time unit are slots, determining the second time unit according to a time domain location of a last one of the plurality of first time units used to transmit a transport block, TB, repeatedly for a plurality of times, wherein the granularity comprises a symbol, a slot, a sub-slot, a half-slot, or a subframe; and in a case that the granularity of the first time unit of the plurality of first time units is different from the granularity of the second time unit, determining the second time unit according to a time domain location of a second time unit to which the at least one of the plurality of first time units belongs, wherein the second time unit used to transmit the feedback information is an (n+k) th second time unit, n and k are positive integers, and an n th second time unit is a second time unit to which the last one of the plurality of first time units belongs.