Method and apparatus for transmitting and receiving signal in wireless communication system

A device for wireless communication, the device comprising:

• a memory storing instructions;
• and
• a processor configured to perform operations by executing the instructions,
• wherein the operations of the processor includes:
• receiving a system information block (SIB) including paging early indication (PEI)-related information through higher-layer signaling;
• detecting downlink control information, DCI, for PEI associated with ‘M’ paging occasions (POs);
• determining whether to monitor each PO, based on the detected DCI for PEI;
• and
• receiving paging DCI in a PO monitored by the device,
• wherein each of the ‘M’ POs, respectively, relates to ‘N’ sub-groups,
• wherein the PO monitored by the device is determined based on a device_ID allocated to the device,
• wherein the DCI for PEI includes a first field with a configurable size, the first field being configured with a total of ‘M*N’ bits based on a number of the POs per PEI being ‘M’ and a number of the sub-groups per PO being ‘N’,
• wherein the processor is configured to determine whether to monitor each PO based on a bit value of a specific bit related to a specific sub-group to which the device belongs among the total ‘M*N’ bits,
• wherein each of the number of the POs per PEI ‘M’ and the number of the sub-groups per PO ‘N’, is respectively determined based on the SIB including the PEI-related information received through the higher-layer signaling, and
• wherein an index of the specific sub-group to which the device belongs is determined based on the number of the sub-groups per PO ‘N’ and a modulo operation related to the device ID allocated to the device.

A method of transmitting a signal by a base station (BS) in a wireless communication system, the method comprising:

• transmitting a system information block (SIB) including paging early indication (PEI)-related information through higher-layer signaling;
• transmitting downlink control information (DCI) for PEI associated with ‘M’ paging occasions (POs);
• and
• transmitting paging DCI in a specific PO related to a first user equipment (UE) among the ‘M’ POs,
• wherein each of the ‘M’ POs, respectively, relates to ‘N’ sub-groups,
• wherein the specific PO related to the first UE is determined based on a UE_ID allocated to the first UE,
• wherein the DCI for PEI includes a first field with a configurable size, and the BS configures the first field with a total of ‘M*N’ bits, based on a number of the POs per PEI being ‘M’ and a number of sub-groups per PO being ‘N’,
• wherein the BS instructs the first UE to monitor the paging DCI by a bit value of a specific bit related to a specific sub-group to which the first UE belongs among the total ‘M*N’ bits,
• wherein each of the number of the POs per PEI ‘M’ and the number of the sub-groups per PO ‘N’, is respectively indicated to the first UE based on the SIB including the PEI-related information transmitted through the higher-layer signaling, and
• wherein an index of the specific sub-group to which the first UE belongs is determined based on the number of the sub-groups per PO ‘N’ and a modulo operation related to the UE ID allocated to the first UE.

A base station (BS) for wireless communication, the BS comprising:

• a transceiver;
• and
• a processor configured to transmit paging early indication (PEI)-related information through higher-layer signaling by controlling the transceiver, transmit downlink control information (DCI) for PEI associated with ‘M’ paging occasions (POs), and transmit paging DCI in a specific PO related to a first user equipment (UE) among the ‘M’ POs,
• wherein each of the ‘M’ POs, respectively, relates to ‘N’ sub-groups,
• wherein the specific PO related to the first UE is determined based on a UE_ID allocated to the first UE,
• wherein the DCI for PEI includes a first field with a configurable size, and the BS configures the first field with a total of ‘M*N’ bits, based on a number of the POs per PEI being ‘M’ and a number of sub-groups per PO being ‘N’,
• wherein the processor instructs the first UE to monitor the paging DCI by a bit value of a specific bit related to a specific sub-group to which the first UE belongs among the total ‘M*N’ bits,
• wherein each of the number of the POs per PEI ‘M’ and the number of the sub-groups per PO ‘N’, is respectively indicated to the first UE based on the SIB including the PEI-related information transmitted through the higher-layer signaling, and
• wherein an index of the specific sub-group to which the first UE belongs is determined based on the number of the sub-groups per PO ‘N’ and a modulo operation related to the UE ID allocated to the first UE.