A method in a User Equipment UE for wireless communications, comprising: receiving P downlink information groups, the P being a positive integer greater than 1; monitoring a first-type signaling and a second-type signaling respectively in first time-frequency sub-resources and second time-frequency sub-resources; a first signaling being received in the first time-frequency sub-resources, the first signaling being a first-type signaling; and transmitting a first information group; wherein the first-type signaling is a physical-layer signaling for downlink grant or a physical-layer signaling for a Semi-Persistent Scheduling SPS Release, and the second-type signaling is a physical-layer signaling for downlink grant or a physical-layer signaling for a Semi-Persistent Scheduling Release; a transmitter of the first-type signaling and a transmitter of the second-type signaling are a same serving cell; the first information group is used for indicating whether scheduling of the first signaling is correctly received; the first signaling comprises a first field, a value of the first field in the first signaling is related to a number of the first-type signalings transmitted in the first time-frequency sub-resources, and the value of the first field in the first signaling is independent of a number of the second-type signalings transmitted in the second time-frequency sub-resources; the second time-frequency sub-resources comprises a first time, the first time being between a first reference time and a second reference time; the first reference time and the second reference time are a start time and an end time of the first time-frequency sub-resources respectively; the P downlink information groups are respectively used for indicating P time-frequency resources, any of the P time-frequency resources being reserved for one of the first-type signaling or the second-type signaling; there exists two time-frequency resources of the P time-frequency resources being reserved for the first-type signaling and the second-type signaling respectively; the two time-frequency resources comprise the first time-frequency sub-resources and the second time-frequency sub-resources respectively; for each of the P downlink information groups, an explicit method is adopted to indicate that corresponding time-frequency resources are reserved for the first-type signaling, or an explicit method is adopted to indicate that corresponding time-frequency resources are reserved for the second-type signaling; the explicit method is to indicate whether corresponding time-frequency resources are reserved for the first-type signaling or the second-type signaling via an indicator of one bit. receiving P downlink information groups, the P being a positive integer greater than 1; monitoring a first-type signaling and a second-type signaling respectively in first time-frequency sub-resources and second time-frequency sub-resources; a first signaling being received in the first time-frequency sub-resources, the first signaling being a first-type signaling; and transmitting a first information group; wherein the first-type signaling is a physical-layer signaling for downlink grant or a physical-layer signaling for a Semi-Persistent Scheduling SPS Release, and the second-type signaling is a physical-layer signaling for downlink grant or a physical-layer signaling for a Semi-Persistent Scheduling Release; a transmitter of the first-type signaling and a transmitter of the second-type signaling are a same serving cell; the first information group is used for indicating whether scheduling of the first signaling is correctly received; the first signaling comprises a first field, a value of the first field in the first signaling is related to a number of the first-type signalings transmitted in the first time-frequency sub-resources, and the value of the first field in the first signaling is independent of a number of the second-type signalings transmitted in the second time-frequency sub-resources; the second time-frequency sub-resources comprises a first time, the first time being between a first reference time and a second reference time; the first reference time and the second reference time are a start time and an end time of the first time-frequency sub-resources respectively; the P downlink information groups are respectively used for indicating P time-frequency resources, any of the P time-frequency resources being reserved for one of the first-type signaling or the second-type signaling; there exists two time-frequency resources of the P time-frequency resources being reserved for the first-type signaling and the second-type signaling respectively; the two time-frequency resources comprise the first time-frequency sub-resources and the second time-frequency sub-resources respectively; for each of the P downlink information groups, an explicit method is adopted to indicate that corresponding time-frequency resources are reserved for the first-type signaling, or an explicit method is adopted to indicate that corresponding time-frequency resources are reserved for the second-type signaling; the explicit method is to indicate whether corresponding time-frequency resources are reserved for the first-type signaling or the second-type signaling via an indicator of one bit.