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

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

• transmitting, to a user equipment, a first control resource set (CORESET) configuration including information regarding a frequency resource of a first CORESET and information regarding a CORESET time duration of the first CORESET;
• and
• transmitting a physical downlink control channel (PDCCH) signal in one or more resource element group (REG) bundles on the first CORESET,
• wherein each REG bundle on the first CORESET consists of 2, 3 or 6 REGs of the first CORESET based on an REG bundle size of 2, 3, or 6,
• wherein the CORESET time duration is configured to be 2 symbols or 3 symbols,
• wherein the size of one REG bundle in a frequency domain is 1 resource block (RB), 2 RBs, or 3 RBs depending on the REG bundle size and the CORESET time duration,
• wherein the information regarding the frequency resource of the first CORESET is a bitmap which is specific to a first subband allocated to the user equipment among a plurality of subbands included in all bands of a corresponding carrier and the bitmap allocates the frequency resource of the first CORESET in the first subband, and
• wherein the bitmap allocates the frequency resource of the first CORESET in units of 6 RBs such that the frequency resource does not include any remaining resources which do not belong to any REG bundle, regardless of the size of the one REG bundle in the frequency domain being 1 RB, 2 RBs, or 3 RBs.

A user equipment for receiving a downlink signal, comprising:

• a receiver;
• and
• a processor configured to receive, using the receiver, a first control resource set (CORESET) configuration including information regarding a frequency resource of a first CORESET and information regarding a CORESET time duration of the first CORESET, and to receive, using the receiver, a physical downlink control channel (PDCCH) signal in one or more resource element group (REG) bundles on the first CORESET,
• wherein each REG bundle on the first CORESET consists of 2, 3 or 6 REGs of the first CORESET based on an REG bundle size of 2, 3, or 6,
• wherein the CORESET time duration is configured to be 2 symbols or 3 symbols,
• wherein the size of one REG bundle in the frequency domain is one resource block (RB), 2 RBs, or 3 RBs depending on the REG bundle size and the CORESET time duration,
• wherein the information regarding the frequency resource of the first CORESET is a bitmap which is specific to a first subband allocated to the user equipment among a plurality of subbands included in all bands of a corresponding carrier and the bitmap allocates the frequency resource of the first CORESET in the first subband, and
• wherein the bitmap allocates the frequency resource of the first CORESET in units of 6 RBs such that the frequency resource does not include any remaining resources which do not belong to any REG bundle, regardless of the size of the one REG bundle in the frequency domain being 1 RB, 2 RBs, or 3 RBs.

A base station for transmitting a downlink signal, comprising:

• a transmitter, and
• a processor configured to transmit, using the transmitter to a user equipment, a first control resource set (CORESET) configuration including information regarding a frequency resource of a first CORESET and information regarding a CORESET time duration of the first CORESET, and to transmit, using the transmitter, a physical downlink control channel (PDCCH) signal in one or more resource element group (REG) bundles on the first CORESET,
• wherein each REG bundle on the first CORESET consists of 2, 3 or 6 REGs of the first CORESET based on an REG bundle size of 2, 3, or 6,
• wherein the CORESET time duration is configured to be 2 symbols or 3 symbols,
• wherein the size of one REG bundle in the frequency domain is 1 resource block (RB), 2 RBs, or 3 RBs depending on the REG bundle size and the CORESET time duration,
• wherein the information regarding the frequency resource of the first CORESET is a bitmap which is specific to a first subband allocated to the user equipment among a plurality of subbands included in all bands of a corresponding carrier and the bitmap allocates the frequency resource of the first CORESET in the first subband, and
• wherein the bitmap allocates the frequency resource of the first CORESET in units of 6 RBs such that the frequency resource does not include any remaining resources which do not belong to any REG bundle, regardless of the size of the one REG bundle in the frequency domain being 1 RB, 2 RBs, or 3 RBs.