Method and apparatus for receiving a synchronization signal
The present invention discloses a method for a terminal to receive a synchronization signal in a wireless communication system. Particularly, the method includes the steps of receiving a synchronization block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcasting channel (PBCH) and receiving a DMRS (demodulation reference signal) via resource region in which the PBCH is received. In this case, an index of the synchronization block can be determined in consideration of a sequence of the DMRS.
1. A method of receiving a synchronization signal block (SSB) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving the SSB and a demodulation reference signal (DMRS) for a physical broadcasting channel (PBCH),
wherein the SSB includes a synchronization signal (SS) and the PBCH; and
wherein a sequence of the DMRS and a scrambling sequence of the PBCH are generated based on same bits for an index of the SSB.
2. The method of claim 1 , wherein 3 bits among 6 bits for the index of the SSB are obtained based on the DMRS and remaining 3 bits are obtained based on a payload of the PBCH.
3. The method of claim 1 , wherein a number of the same bits is based on a frequency band in which the UE operates.
4. The method of claim 1 , wherein the index of the SSB is related to one DMRS index.
5. The method of claim 1 , wherein the sequence of the DMRS is generated based on a cell identifier for identifying a cell.
6. A communication device for receiving a synchronization signal block (SSB) in a wireless communication system, the communication device comprising:
a memory; and
a processor connected with the memory;
wherein the processor is configured to control to:
receive the SSB and a demodulation reference signal (DMRS) for a physical broadcasting channel (PBCH),
wherein the SSB includes a synchronization signal (SS) and the PBCH; and
wherein a sequence of the DMRS and a scrambling sequence of the PBCH are generated based on same bits for an index of the SSB.
7. The communication device of claim 6 , wherein 3 bits among 6 bits for the index of the SSB are obtained based on the DMRS and remaining 3 bits are obtained based on a payload of the PBCH.
8. The communication device of claim 6 , wherein a number of the same bits is based on a frequency band in which the UE operates.
9. The communication device of claim 6 , wherein the index of the SSB is related to one DMRS index.
10. The communication device of claim 6 , wherein the sequence of the DMRS is generated based on a cell identifier for identifying a cell.