Method and apparatus for transmitting and 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: monitoring first PDCCH candidates for a second cell in a first SS of a first cell; on the basis of the second cell being PCell, monitoring second PDCCH candidates for the second cell even in a second SS of the second cell; and on the basis of a PDCCH detected from among the first and second PDCCH candidates, performing transmission or reception of data corresponding to the PDCCH.
1. A method performed by a user equipment (UE) configured to operate in a wireless communication system, the method comprising:
receiving configuration information regarding a cross carrier scheduling related to scheduling information for data on a primary cell received from a secondary cell; and
monitoring a physical downlink control channel (PDCCH) related to the scheduling information, wherein the PDCCH is available to be monitored in one of: (i) a first active downlink bandwidth part (DL BWP) in the primary cell or (ii) a second active DL BWP in the secondary cell;
wherein a first subcarrier spacing (SCS) for the first active DL BWP is smaller than a second SCS for the second active DL BWP, and
wherein, for monitoring the PDCCH, (i) a total number of PDCCH candidates per slot on the first active DL BWP, (ii) a total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) a total number of PDCCH candidates per slot on the second active DL BWP and (iv) a total number of CCEs per slot on the second active DL BWP are determined based on a first certain number of downlink cells related to the first SCS.
2. The method of claim 1 , wherein the first certain number is identical to a number of the primary cell in the downlink cells related to the first SCS.
3. The method of claim 1 , wherein a second certain number of downlink cells related to the second SCS is not considered to determine the (i) the total number of PDCCH candidates per slot on the first active DL BWP, (ii) the total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) the total number of PDCCH candidates per slot on the second active DL BWP and (iv) the total number of CCEs per slot on the second active DL BWP.
4. A user equipment (UE) configured to operate in a wireless communication system, the UE comprising:
a transceiver; and
at least one processor coupled with the transceiver,
wherein the at least one processor is configured to:
receive configuration information regarding a cross carrier scheduling related to scheduling information for data on a primary cell received from a secondary cell; and
monitor a physical downlink control channel (PDCCH) related to the scheduling information, wherein the PDCCH is available to be monitored in one of: (i) a first active downlink bandwidth part (DL BWP) in the primary cell or (ii) a second active DL BWP in the secondary cell;
wherein a first subcarrier spacing (SCS) for the first active DL BWP is smaller than a second SCS for the second active DL BWP, and
wherein, for monitoring the PDCCH, (i) a total number of PDCCH candidates per slot on the first active DL BWP, (ii) a total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) a total number of PDCCH candidates per slot on the second active DL BWP and (iv) a total number of CCEs per slot on the second active DL BWP are determined based on a first certain number of downlink cells related to the first SCS.
5. The UE of claim 4 , wherein the first certain number is identical to a number of the primary cell in the downlink cells related to the first SCS.
6. The UE of claim 4 , wherein a second certain number of downlink cells related to the second SCS is not considered to determine the (i) the total number of PDCCH candidates per slot on the first active DL BWP, (ii) the total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) the total number of PDCCH candidates per slot on the second active DL BWP and (iv) the total number of CCEs per slot on the second active DL BWP.
7. A method performed by a base station (BS) configured to operate in a wireless communication system, the method comprising:
transmitting configuration information regarding a cross carrier scheduling related to scheduling information for data on a primary cell transmitted from a secondary cell; and
transmitting a physical downlink control channel (PDCCH) related to the scheduling information, wherein the PDCCH is available to be transmitted in one of: (i) a first active downlink bandwidth part (DL BWP) in the primary cell or (ii) a second active DL BWP in the secondary cell;
wherein a first subcarrier spacing (SCS) for the first active DL BWP is smaller than a second SCS for the second active DL BWP, and
wherein, for transmitting the PDCCH, (i) a total number of PDCCH candidates per slot on the first active DL BWP, (ii) a total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) a total number of PDCCH candidates per slot on the second active DL BWP and (iv) a total number of CCEs per slot on the second active DL BWP are determined based on a first certain number of downlink cells related to the first SCS.
8. A base station (BS) configured to operate in a wireless communication system, the BS comprising:
a transceiver; and
at least one processor coupled with the transceiver,
wherein the at least one processor is configured to:
transmit configuration information regarding a cross carrier scheduling related to scheduling information for data on a primary cell transmitted from a secondary cell; and
transmit a physical downlink control channel (PDCCH) related to the scheduling information, wherein the PDCCH is available to be transmitted in one of: (i) a first active downlink bandwidth part (DL BWP) in the primary cell or (ii) a second active DL BWP in the secondary cell;
wherein a first subcarrier spacing (SCS) for the first active DL BWP is smaller than a second SCS for the second active DL BWP, and
wherein, for transmitting the PDCCH, (i) a total number of PDCCH candidates per slot on the first active DL BWP, (ii) a total number of non-overlapped control channel elements (CCEs) per slot on the first active DL BWP, (iii) a total number of PDCCH candidates per slot on the second active DL BWP and (iv) a total number of CCEs per slot on the second active DL BWP are determined based on a first certain number of downlink cells related to the first SCS.