Technology for a user equipment, operable to configure a control resource set (CORESET) is disclosed. The UE can decode a signal, received from a next generation node B (gNB), that includes a resource element group (REG) bundling size for a first CORESET. The UE can decode a signal, received from the gNB that includes a REG bundling size for a second CORESET. The UE can decode a control message contained in one or more REGs in one or more of the first CORESET or the second CORESET.