Method and apparatus for transmitting/receiving wireless signal in wireless communication system
The present disclosure relates to a wireless communication system and, more particularly, to a method and an apparatus therefor, the method comprising the steps of: detecting an SSB in an unlicensed band, the SSB including an index related to a CORESET configuration; determining, on the basis of the index, an RB offset used for identifying the position of a CORESET frequency associated with the SSB; and monitoring the CORESET in the unlicensed band on the basis of the RB offset.
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
detecting a synchronization signal block (SSB) in an unlicensed band, wherein the SSB includes an index related to a control resource set (CORESET) configuration;
determining a resource block (RB) offset used to identify a frequency position of a CORESET associated with the SSB based on the index; and
monitoring the CORESET in the unlicensed band based on the RB offset,
wherein, based on a subcarrier spacing (SCS) of the SSB, a relationship between the index and the RB offset includes a relationship of the following table:
SSB SCS = 30 kHz
SSB SCS = 15 kHz
Index
RB offset
RB offset
n
a
2a + 10
n + 1
b
2b + 10
n + 2
c
2c + 10
n + 3
d
2d + 10,
where each of n, a, b, c and d are integers.
2. The method of claim 1 ,
wherein a, b, c, and d are a, a+1, a+2, and a+3, respectively.
3. The method of claim 1 ,
wherein a center frequency of the SSB corresponds to a synchronization raster.
4. The method of claim 1 , further comprising:
detecting a physical downlink control channel (PDCCH) from the CORESET based on the monitoring.
5. The method of claim 4 , further comprising:
receiving system information via a physical downlink shared channel (PDSCH) related to the PDCCH.
6. A user equipment (UE) used in a wireless communication system, the UE comprising:
at least one processor; and
at least one computer memory operably connected to the at least one processor and configured to, when executed, cause the at least one processor to perform operations comprising:
detecting a synchronization signal block (SSB) in an unlicensed band, wherein the SSB includes an index related to a control resource set (CORESET) configuration;
determining a resource block (RB) offset used to identify a frequency position of a CORESET associated with the SSB based on the index; and
monitoring the CORESET in the unlicensed band based on the RB offset,
wherein, based on a subcarrier spacing (SCS) of the SSB, a relationship between the index and the RB offset includes a relationship of the following table:
SSB SCS = 30 kHz
SSB SCS = 15 kHz
Index
RB offset
RB offset
n
a
2a + 10
n + 1
b
2b + 10
n + 2
c
2c + 10
n + 3
d
2d + 10,
where each of n, a, b, c and d are integers.
7. The UE of claim 6 ,
wherein a, b, c, and d are a, a+1, a+2, and a+3, respectively.
8. The UE of claim 6 ,
wherein a center frequency of the SSB corresponds to a synchronization raster.
9. The UE of claim 6 ,
wherein the operations further comprise detecting a physical downlink control channel (PDCCH) from the CORESET based on the monitoring.
10. The UE of claim 9 ,
wherein the operations comprise receiving system information via a physical downlink shared channel (PDSCH) related to the PDCCH.
11. An apparatus for a user equipment (UE), the apparatus comprising:
at least one processor; and
at least one computer memory operably connected to the at least one processor and configured to, when executed, cause the at least one processor to perform operations comprising:
detecting a synchronization signal block (SSB) in an unlicensed band, wherein the SSB includes an index related to a control resource set (CORESET) configuration;
determining a resource block (RB) offset used to identify a frequency position of a CORESET associated with the SSB based on the index; and
monitoring the CORESET in the unlicensed band based on the RB offset,
wherein, based on a subcarrier spacing (SCS) of the SSB, a relationship between the index and the RB offset includes a relationship in the following table:
SSB SCS = 30 kHz
SSB SCS = 15 kHz
Index
RB offset
RB offset
n
a
2a + 10
n + 1
b
2b + 10
n + 2
c
2c + 10
n + 3
d
2d + 10,
where each of n, a, b, c and d are integers.
12. The apparatus of claim 11 ,
wherein a, b, c, and d are a, a+1, a+2, and a+3, respectively.
13. The apparatus of claim 11 ,
wherein a center frequency of the SSB corresponds to a synchronization raster.
14. The apparatus of claim 11 ,
wherein the operations further comprise detecting a physical downlink control channel (PDCCH) from the CORESET based on the monitoring.
15. The apparatus of claim 11 ,
wherein the operations comprise receiving system information via a physical downlink shared channel (PDSCH) related to the PDCCH.