A PUCCH resource for an HARQ-ACK signal transmission in response to a EPDCCH detection scheduling a PDSCH can be determined as n_PUCCH=n_ECCE+HPRO+N_PUCCH^E where n_ECCE is an ECCE with a lowest index for a respective EPDCCH (n_ECCE=n_DCCE for a distributed EPDCCH and n_ECCE=n_LCCE for a localized EPDCCH), HPRO is the mapped integer value of the binary HPRO field in a DCI format conveyed by a respective EPDCCH (for example, binary HPRO values of 00, 01, 10, and 11 may respectively map to integer HPRO values of ?1, 0, 1, 2), and N_PUCCH^E is a UE-specific PUCCH resource offset per PRB set (N_PUCCH^E=N_PUCCH^D for an distributed EPDCCH transmission and N_PUCCH^E=N_PUCCH^L for a localized EPDCCH transmission). When UE may detect either distributed EPDCCH or a localized EPDCCH in a subframe, it may be configured with both a N_PUCCH^D resource offset value and a N_PUCCH^L PUCCH resource offset value and use the former if an HARQ-ACK transmission is in response to a distributed EPDCCH detection or the latter if an HARQ-ACK transmission is in response to a localized EPDCCH detection. Therefore, an amount of PUCCH resource overlapping for HARQ-ACK transmissions corresponding to PDCCH, distributed EPDCCH, or localized EPDCCH transmissions can be controlled through N_PUCCH^E, while PUCCH resource collisions when overlapping occurs can be resolved through an HPRO field.