Method and apparatus for timing configuration of discovery signal and channel

A base station (BS) in a wireless communication system supporting a shared spectrum channel access, the BS comprising:

• at least one transceiver configured to transmit, to a user equipment (UE) over a downlink channel supporting a shared spectrum channel access, at least one SS/PBCH block that is located in a first set of SS/PBCH blocks or a second set of SS/PBCH blocks within at least one discovery signal and channel (DSCH) transmission window of a set of DSCH transmission windows;
• and
• at least one processor operably connected to the at least one transceiver, the at least one processor configured to:
• determine the set of DSCH transmission windows based on a window periodicity, a window duration, and a window offset;
• determine the first set of SS/PBCH blocks within a DSCH transmission window of the set of DSCH transmission windows, wherein the first set of SS/PBCH blocks is quasi-co-located (QCLed);
• and
• determine the second set of SS/PBCH blocks across at least two DSCH transmission windows, the at least two DSCH transmission windows being different DSCH windows of the set of DSCH transmission windows, wherein the second set of SS/PBCH blocks is QCLed.

A method of a user equipment (UE) in a wireless communication system supporting a shared spectrum channel access, the method comprising:

• determining a set of discovery signal and channel (DSCH) transmission windows based on a window periodicity, a window duration, and a window offset;
• determining a first set of synchronization signals and physical broadcast channel (SS/PBCH) blocks within a DSCH transmission window of the set of DSCH transmission windows, wherein the first set of SS/PBCH blocks is quasi-co-located (QCLed);
• determining a second set of SS/PBCH blocks across at least two DSCH transmission windows, the at least two DSCH transmission windows being different DSCH windows of the set of DSCH transmission windows, wherein the second set of SS/PBCH blocks is QCLed;
• and
• receiving, from a base station (BS) over a downlink channel supporting the shared spectrum channel access, at least one SS/PBCH block that is located in the first set of SS/PBCH blocks or the second set of SS/PBCH blocks based on QCL information of the first set of SS/PBCH blocks or the second set of SS/PBCH blocks within the DSCH transmission window of the determined set of DSCH transmission windows.