Method and apparatus for receiving physical downlink control channel and transmitting uplink control channel in wireless communication systems

A method performed by a base station (BS) in a wireless communication system, the method comprising:

• transmitting, to a terminal, first configuration information on a first control resource set (CORESET), wherein a mapping type of control channel elements (CCEs) to resource element groups (REGs) of the first CORESET is configured as a non-interleaved mapping and a time duration of the first CORESET is one symbol;
• transmitting, to the terminal, second configuration information on a first search space (SS) set and a second SS set, wherein the first SS set is linked with the second SS set, wherein the first SS set associated with the first CORESET includes a first physical downlink control channel (PDCCH) candidate of a CCE aggregation level (AL) 8 and a second PDCCH candidate of a CCE AL 16, and wherein a starting CCE index of the first PDCCH candidate is the same as a starting CCE index of the second PDCCH candidate;
• and
• transmitting, to the terminal, a PDCCH scheduling a physical downlink shared channel (PDSCH) based on the second configuration information,
• wherein, in case that the PDCCH is associated with the first PDCCH candidate or the second PDCCH candidate, the second PDCCH candidate and PDCCH candidates linked with the first PDCCH candidate or the second PDCCH candidate in the second SS set are not available for the PDSCH.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• receive first configuration information on a first control resource set (CORESET), wherein a mapping type of control channel elements (CCEs) to resource element groups (REGs) of the first CORESET is configured as a non-interleaved mapping and a time duration of the first CORESET is one symbol,
• receive second configuration information on a first search space (SS) set and a second SS set, wherein the first SS set is linked with the second SS set,
• identify that the first SS set associated with the first CORESET includes a first physical downlink control channel (PDCCH) candidate of a CCE aggregation level (AL) 8 and a second PDCCH candidate of a CCE AL 16, based on the second configuration information, wherein a starting CCE index of the first PDCCH candidate is the same as a starting CCE index of the second PDCCH candidate,
• receive a PDCCH scheduling a physical downlink shared channel (PDSCH) based on the second configuration information, and
• in case that the PDCCH is associated with the first PDCCH candidate or the second PDCCH candidate, identifying that the second PDCCH candidate and PDCCH candidates linked with the first PDCCH candidate or the second PDCCH candidate in the second SS set are not available for the PDSCH.

A base station (BS) in a wireless communication system, the BS comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• transmit, to a terminal, first configuration information on a first control resource set (CORESET), wherein a mapping type of control channel elements (CCEs) to resource element groups (REGs) of the first CORESET is configured as a non-interleaved mapping and a time duration of the first CORESET is one symbol,
• transmit, to the terminal, second configuration information on a first search space (SS) set and a second SS set, wherein the first SS set is linked with the second SS set, wherein the first SS set associated with the first CORESET includes a first physical downlink control channel (PDCCH) candidate of a CCE aggregation level (AL) 8 and a second PDCCH candidate of a CCE AL 16, and wherein a starting CCE index of the first PDCCH candidate is the same as a starting CCE index of the second PDCCH candidate, and
• transmit, to the terminal, a PDCCH scheduling a physical downlink shared channel (PDSCH) based on the second configuration information,
• wherein, in case that the PDCCH is associated with the first PDCCH candidate or the second PDCCH candidate, the second PDCCH candidate and PDCCH candidates linked with the first PDCCH candidate or the second PDCCH candidate in the second SS set are not available for the PDSCH.