A method for determining time-frequency resources, comprising: receiving, by a second communication node, information about a first resource set transmitted by a first communication node, wherein the information about the first resource set comprises: time-frequency resources of a second resource set comprised in the first resource set, configuration information of the second resource set comprised in the first resource set, time-frequency resource configuration information of the first resource set, and a dynamic signaling indication to indicate whether a physical downlink shared channel, PDSCH, transmission is to perform rate matching, the PDSCH transmission includes a process in which data is transmitted to the second communication node through a PDSCH; and determining, according to the information about the first resource set, time-frequency resources on which the PDSCH transmission is to perform rate matching, wherein the first resource set comprises one or more resource sets or one or more control resource sets, CORESETs, wherein the dynamic signaling indication comprises a rate matching dynamic signaling indication for the first resource set, and a valid time domain range of the rate matching dynamic signaling indication for the first resource set includes all slots where the first resource set is overlapped with resources used by the PDSCH transmission, wherein the first resource set comprises resources configured periodically from at least part of time domain resources in a time domain resource unit, and characterizsed in that the valid time domain range of the rate matching dynamic signaling indication for the first resource set is determined according to time-frequency resources corresponding to all blind detection moments. receiving, by a second communication node, information about a first resource set transmitted by a first communication node, wherein the information about the first resource set comprises: time-frequency resources of a second resource set comprised in the first resource set, configuration information of the second resource set comprised in the first resource set, time-frequency resource configuration information of the first resource set, and a dynamic signaling indication to indicate whether a physical downlink shared channel, PDSCH, transmission is to perform rate matching, the PDSCH transmission includes a process in which data is transmitted to the second communication node through a PDSCH; and time-frequency resources of a second resource set comprised in the first resource set, configuration information of the second resource set comprised in the first resource set, time-frequency resource configuration information of the first resource set, and a dynamic signaling indication to indicate whether a physical downlink shared channel, PDSCH, transmission is to perform rate matching, the PDSCH transmission includes a process in which data is transmitted to the second communication node through a PDSCH; and determining, according to the information about the first resource set, time-frequency resources on which the PDSCH transmission is to perform rate matching, wherein the first resource set comprises one or more resource sets or one or more control resource sets, CORESETs, wherein the dynamic signaling indication comprises a rate matching dynamic signaling indication for the first resource set, and a valid time domain range of the rate matching dynamic signaling indication for the first resource set includes all slots where the first resource set is overlapped with resources used by the PDSCH transmission, wherein the first resource set comprises resources configured periodically from at least part of time domain resources in a time domain resource unit, and characterizsed in that the valid time domain range of the rate matching dynamic signaling indication for the first resource set is determined according to time-frequency resources corresponding to all blind detection moments.