A user equipment, UE, in a wireless communication system, the UE comprising: a transceiver; and at least one processor operably connected to the transceiver, wherein the at least one processor is configured to: receive, from a base station, BS via the transceiver, a SS/PBCH block comprising synchronization signals, SS, and a physical broadcast channel, PBCH, over downlink channels, based on an operation mode, wherein the operation mode is configured for the SS/PBCH block as one of a non-standalone mode in which the SS/PBCH block is received on a licensed-assisted-access, LAA, secondary cell, Scell, or a standalone mode in which the SS/PBCH block is received on a primary cell, Pcell, wherein a subcarrier spacing, SCS, of the SS/PBCH block, a number of symbols included in the SS/PBCH block, and information on which symbols in a slot are used for reception of the SS/PBCH block, are determined based on the operation mode, wherein a SCS of the SS/PBCH block in the non-standalone mode is larger than a SCS of the SS/PBCH block in the standalone mode, and wherein at least one of the number of symbols or the information is different for each operation mode. a transceiver; and at least one processor operably connected to the transceiver, wherein the at least one processor is configured to: receive, from a base station, BS via the transceiver, a SS/PBCH block comprising synchronization signals, SS, and a physical broadcast channel, PBCH, over downlink channels, based on an operation mode, wherein the operation mode is configured for the SS/PBCH block as one of a non-standalone mode in which the SS/PBCH block is received on a licensed-assisted-access, LAA, secondary cell, Scell, or a standalone mode in which the SS/PBCH block is received on a primary cell, Pcell, wherein a subcarrier spacing, SCS, of the SS/PBCH block, a number of symbols included in the SS/PBCH block, and information on which symbols in a slot are used for reception of the SS/PBCH block, are determined based on the operation mode, wherein a SCS of the SS/PBCH block in the non-standalone mode is larger than a SCS of the SS/PBCH block in the standalone mode, and wherein at least one of the number of symbols or the information is different for each operation mode. receive, from a base station, BS via the transceiver, a SS/PBCH block comprising synchronization signals, SS, and a physical broadcast channel, PBCH, over downlink channels, based on an operation mode, wherein the operation mode is configured for the SS/PBCH block as one of a non-standalone mode in which the SS/PBCH block is received on a licensed-assisted-access, LAA, secondary cell, Scell, or a standalone mode in which the SS/PBCH block is received on a primary cell, Pcell, wherein a subcarrier spacing, SCS, of the SS/PBCH block, a number of symbols included in the SS/PBCH block, and information on which symbols in a slot are used for reception of the SS/PBCH block, are determined based on the operation mode, wherein a SCS of the SS/PBCH block in the non-standalone mode is larger than a SCS of the SS/PBCH block in the standalone mode, and wherein at least one of the number of symbols or the information is different for each operation mode.