Method and device for transmitting and receiving signal between user equipment and base station in wireless communication system

A method of transmitting and receiving signals to and from a user equipment (UE) by a base station (BS) in a wireless communication system, the method comprising:

• transmitting at least one synchronization signal/physical broadcast channel (SS/PBCH) block,
• wherein either a demodulation reference signal (DMRS) sequence for a PBCH included in each SS/PBCH block or a combination of the DMRS sequence and information included in the PBCH indicates an index of each SS/PBCH block,
• wherein the DMRS sequence, included in each SS/PBCH block, is initialized in a unit of the SS/PBCH block, based on an initial value determined based on a cell identifier (cell ID) and the index of the SS/PBCH block;
• and
• transmitting and receiving the signals to and from the UE that performs synchronization with the BS based on the at least one SS/PBCH block.

A user equipment (UE) for transmitting and receiving signals to and from a base station (BS) in a wireless communication system, the UE comprising:

• a transmitter;
• a receiver;
• and
• a processor connected to the transmitter and receiver,
• wherein the processor is configured to:
• receive from the BS, a synchronization signal/physical broadcast channel (SS/PBCH) block;
• determine an index of the received SS/PBCH block based on either a demodulation reference signal (DMRS) sequence for a PBCH included in the SS/PBCH block or a combination of the DMRS sequence and information included in the PBCH,
• wherein the DMRS sequence is initialized in a unit of the SS/PBCH block, based on an initial value determined based on a cell identifier (cell ID) and the index of the SS/PBCH block;
• and
• perform synchronization with the BS based on the determined index of the SS/PBCH block.

A base station (BS) for transmitting and receiving signals to and from a user equipment (UE) in a wireless communication system, the BS comprising:

• a transmitter;
• a receiver;
• and
• a processor connected to the transmitter and receiver,
• wherein the processor is configured to:
• transmit at least one synchronization signal/physical broadcast channel (SS/PBCH) block,
• wherein either a demodulation reference signal (DMRS) sequence for a PBCH included in each SS/PBCH block or a combination of the DMRS sequence and information included in the PBCH indicates an index of each SS/PBCH block,
• wherein the DMRS sequence, included in each SS/PBCH block, is initialized in a unit of the SS/PBCH block, based on an initial value determined based on a cell identifier (cell ID) and the index of the SS/PBCH block;
• and
• transmit and receive the signals to and from the UE that performs synchronization with the BS based on the at least one SS/PBCH block.