Method for configuring frequency resource about component carrier for new radio and apparatuses thereof

1. A method of configuring, by a base station (BS), resource block (RB) indexing information about a component carrier (CC), the method comprising:

configuring common RB indexing information about the CC, which is shared by all terminals regardless of configuration of each bandwidth part in the CC and regardless of numerology related to respective terminal, and the CC includes a plurality of bandwidth parts each configured differently according to respective terminal and related to a numerology;

configuring one or more bandwidth parts (BWPs) based on the common RB indexing information; and

transmitting the common RB indexing information and configuration information about the bandwidth parts to a terminal,

wherein the common RB indexing information defines i) RB indexing regardless of bandwidth parts according to each terminal and related to a numerology and ii) RB indexing in increasing order from a lowest frequency,

wherein the method further comprises: configuring user equipment (UE)-specific physical resource block (PRB) indexing information based on each of the bandwidth parts, and

wherein a UE-specific physical downlink shared channel (PDSCH) is scheduled based on the UE-specific PRB indexing information.

2. The method according to claim 1 , wherein the configuration information about the bandwidth parts comprises a starting RB index configured based on the common RB indexing information and a size of the bandwidth part.

3. The method according to claim 1 , wherein a sequence of a reference signal (RS) is generated based on the common RB indexing information.

4. A method of receiving, by a terminal, a radio channel or a radio signal based on resource block (RB) indexing with regard to a component carrier (CC), the method comprising:

receiving common RB indexing information about the CC and configuration information about bandwidth parts from a base station (BS), wherein the common RB indexing information about the CC, is shared by other terminals regardless of configuration of each bandwidth part in the CC and regardless of numerology, and the CC includes a plurality of bandwidth parts each configured differently according to respective terminal and related to a numerology; and

receiving a radio channel or a radio signal from the BS based on the common RB indexing information and the configuration information about the bandwidth parts,

wherein the common RB indexing information defines i) RB indexing regardless of bandwidth parts according to each terminal and related to a numerology and ii) RB indexing in increasing order from a lowest frequency,

wherein the method further comprises: receiving user-equipment (UE)-specific physical resource block (PRB) indexing information based on each of the bandwidth parts from the BS, and

wherein a UE-specific physical downlink shared channel (PDSCH) is received based on the UE-specific PRB indexing information.

5. The method according to claim 4 , wherein the configuration information about the bandwidth parts comprises a starting RB index configured based on the common RB indexing information and a size of the bandwidth part.

6. The method according to claim 4 , wherein a sequence of a reference signal (RS) is generated based on the common RB indexing information.

7. A base station (BS) for configuring resource block (RB) indexing information with regard to a component carrier (CC), the BS comprising:

a controller configured to configure common RB indexing information about the CC, which is shared by all terminals regardless of configuration of each bandwidth part in the CC and regardless of numerology related to respective terminal, and the CC includes a plurality of bandwidth parts each configured differently according to respective terminal and related to a numerology, and configure one or more bandwidth parts (BWPs) based on the common RB indexing information; and

a transmitter configured to transmit the common RB indexing information and configuration information about the bandwidth parts to a terminal,

wherein the common RB indexing information defines i) RB indexing regardless of bandwidth parts according to each terminal and regardless of the CC is configured based on a single numerology or multiple numerologies and ii) RB indexing in increasing order from a lowest frequency,

wherein user-equipment (UE) specific physical resource block (PRB) indexing information is additionally configured based on each of the bandwidth parts, and

wherein a UE-specific physical DL shared channel (PDSCH) is scheduled based on the UE-specific PRB indexing information.

8. The BS according to claim 7 , wherein the configuration information about the bandwidth parts comprises a starting RB index configured based on the common RB indexing information and a bandwidth part size.

9. The BS according to claim 7 , wherein a sequence of a reference signal (RS) is generated based on the common RB indexing information.