Embodiments of the present disclosure provide a wireless communications method and a device, to transmit a response message of a message carrying identification information used to represent a downlink signal of a beam. The method includes: receiving, by a network device, a first uplink message sent by a terminal, wherein the first uplink message comprises identification information of a first signal received by the terminal, and the first signal comprises a channel state information reference signals CSI-RS or a synchronization signal block; determining, by the network device, a first control resource set CORESET according to a correspondence between the first signal and a CORESET; and sending, by the network device, the first response message, responding to the first uplink message, on the first CORESET.