Method and apparatus of enhancement to standalone operation

A user equipment (UE) in a wireless communication system, the UE comprising:

• a transceiver configured to receive, from a base station (BS), a synchronization signals and physical broadcast channel (SS/PBCH) block;
• and
• a processor operably coupled to the transceiver, the processor configured to determine a set of configurations for a control resource set (CORESET #0) to receive a Type0 physical downlink control channel (Type0-PDCCH), wherein the set of configurations includes:
• a subcarrier spacing (SCS) for the CORESET #0, that is the same as a subcarrier spacing of the SS/PBCH block;
• a multiplexing pattern between the CORESET #0 and the SS/PBCH block;
• a number NRBCORESET #0 of resource blocks (RBs) for the CORESET #0;
• a number NsymbolCORESET #0 of symbols for the CORESET #0;
• and
• a frequency offset between the CORESET #0 and the SS/PBCH block;
• wherein, for a first multiplexing pattern between the CORESET #0 and the SS/PBCH block, the frequency offset between the CORESET #0 and the SS/PBCH block is determined as one of 0, NRBCORESET #0−NRBSSB, or (NRBCORESET #0−NRBSSB)/2, where NRBSSB is a number of RBs for the SS/PBCH block;
• and
• wherein the transceiver is further configured to receive the Type0-PDCCH based on the set of configurations for the CORESET #0 over a downlink channel.

A method of a user equipment (UE) in a wireless communication system, the method comprising:

• receiving, from a base station (BS), a synchronization signals and physical broadcast channel (SS/PBCH) block;
• determining a set of configurations for a control resource set (CORESET #0) to receive a Type® physical downlink control channel (Type0-PDCCH), wherein the set of configurations includes:
• a subcarrier spacing (SCS) for the CORESET #0, that is the same as a subcarrier spacing of the SS/PBCH block;
• a multiplexing pattern between the CORESET #0 and the SS/PBCH block;
• a number NRBCORESET #0 of resource blocks (RBs) for the CORESET #0;
• a number NsymbolCORESET #0 of symbols for the CORESET #0;
• and
• a frequency offset between the CORESET #0 and the SS/PBCH block;
• and
• wherein, for a first multiplexing pattern between the CORESET #0 and the SS/PBCH block, the frequency offset between the CORESET #0 and the SS/PBCH block is determined as one of 0, NRBCORESET #0−NRBSSB, or (NRBCORESET #0−NRBSSB)/2, where NRBSSB is a number of RBs for the SS/PBCH block;
• and
• receiving the Type0-PDCCH based on the set of configurations for the CORESET #0 over a downlink channel.