A user device, UE, (302 1, 302 2) for a wireless communication system, wherein the UE (302 1, 302 2) is to be served by a base station and is to use one or more frequency bands for a communication with one or more entities of the wireless communication system, wherein one or more or all of the frequency bands include a plurality of control resource sets, CORESETs (C1-C16), each CORESET (C1-C16) including one or more search spaces (SS1-SS4) carrying control information, wherein the UE (302 1, 302 2) is to group • some or all of the CORESETs (C1-C16) into respective CORESET groups, or • some or all of the search spaces (SS1-SS4) into respective search space groups, wherein a CORESET group includes some or all CORESETs (C1-C16) within a certain time window, and wherein a search space group includes some or all search spaces (SS1-SS4) within the certain time window, wherein the CORESETs or the search spaces (SS1-SS4) are grouped according to • one or more group identifications, IDs, the UE (302 1, 302 2) is configured with, each group ID pointing to or indicating a CORESET group or a search space group, and/or • determining CORESETs (C1-C16) or search spaces (SS1-SS4) to be within the same time window, characterised in that the UE (302 1, 302 2) is to concatenate or combine the CORESETs (C1-C16) or the search spaces (SS1-SS4) of a group, whereby a virtual CORESET or a virtual search space is defined, and wherein the UE (302 1, 302 2) is to stop blind decoding once a certain number of control parameters was found within the virtual search space or the virtual CORESET. wherein the UE (302 1, 302 2) is to be served by a base station and is to use one or more frequency bands for a communication with one or more entities of the wireless communication system, wherein one or more or all of the frequency bands include a plurality of control resource sets, CORESETs (C1-C16), each CORESET (C1-C16) including one or more search spaces (SS1-SS4) carrying control information, wherein the UE (302 1, 302 2) is to group • some or all of the CORESETs (C1-C16) into respective CORESET groups, or • some or all of the search spaces (SS1-SS4) into respective search space groups, • some or all of the CORESETs (C1-C16) into respective CORESET groups, or • some or all of the search spaces (SS1-SS4) into respective search space groups, wherein a CORESET group includes some or all CORESETs (C1-C16) within a certain time window, and wherein a search space group includes some or all search spaces (SS1-SS4) within the certain time window, wherein the CORESETs or the search spaces (SS1-SS4) are grouped according to • one or more group identifications, IDs, the UE (302 1, 302 2) is configured with, each group ID pointing to or indicating a CORESET group or a search space group, and/or • determining CORESETs (C1-C16) or search spaces (SS1-SS4) to be within the same time window, • one or more group identifications, IDs, the UE (302 1, 302 2) is configured with, each group ID pointing to or indicating a CORESET group or a search space group, and/or • determining CORESETs (C1-C16) or search spaces (SS1-SS4) to be within the same time window, characterised in that the UE (302 1, 302 2) is to concatenate or combine the CORESETs (C1-C16) or the search spaces (SS1-SS4) of a group, whereby a virtual CORESET or a virtual search space is defined, and wherein the UE (302 1, 302 2) is to stop blind decoding once a certain number of control parameters was found within the virtual search space or the virtual CORESET.