Method and apparatus of initial access in next generation cellular networks

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

• determining a resource block (RB) grid and a location of a synchronization signal block (SSB) including at least one synchronization signal and a physical broadcast channel (PBCH);
• and
• transmitting, to a terminal, the SSB based on the RB grid,
• wherein information on a subcarrier offset between the SSB and the RB grid is transmitted in system information on the PBCH, and
• wherein the subcarrier offset is defined by a number of subcarriers from a lowest subcarrier in a lowest RB overlapping with the SSB to a lowest subcarrier in the SSB.

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

• a transceiver configured to transmit and receive signals;
• and
• a controller coupled with the transceiver and configured to:
• receive, from a base station, a synchronization signal block (SSB) including at least one synchronization signal and a physical broadcast channel (PBCH),
• identify a subcarrier offset between the SSB and a resource block (RB) grid based on system information on the PBCH, and
• identify a location of the SSB based on the subcarrier offset,
• wherein the subcarrier offset is defined by a number of subcarriers from a lowest subcarrier in a lowest RB overlapping with the SSB to a lowest subcarrier in the SSB.

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

• a transceiver configured to transmit and receive signals;
• and
• a controller coupled with the transceiver and configured to:
• determine a resource block (RB) grid and a location of a synchronization signal block (SSB) including at least one synchronization signal and a physical broadcast channel (PBCH), and
• transmit, to a terminal, the SSB based on the RB grid,
• wherein information on a subcarrier offset between the SSB and the RB grid is transmitted in system information on the PBCH, and
• wherein the subcarrier offset is defined by a number of subcarriers from a lowest subcarrier in a lowest RB overlapping with the SSB to a lowest subcarrier in the SSB.