Disclosed are a method and apparatus for transmitting or receiving a wireless signal in a wireless communication system. The method for transmitting and receiving a wireless signal, according to an embodiment of the present disclosure, may comprise the steps of: receiving, from a base station, configuration information related to transmission and reception of a wireless signal, wherein the configuration information includes information regarding one or more parameters for the transmission and reception of the wireless signal; receiving control information related to the transmission and reception of the wireless signal, wherein the control information includes information regarding at least one adjustment value of the one or more parameters; and transmitting and receiving the wireless signal on the basis of the configuration information and the control information. The adjustment value may be an update value for a corresponding parameter or a difference value with respect to the corresponding parameter.