Methods, apparatus and systems for data transmission using bandwidth parts

A method performed by a wireless communication device, the method comprising:

• receiving a configuration of a first set of bandwidth part (BWP) from a wireless communication node, wherein the first set of BWP includes a single BWP configured for either uplink or downlink transmission regarding the wireless communication device;
• and
• receiving a configuration of at least one second set of BWPs from the wireless communication node, wherein each of the second set of BWPs includes a pair of BWPs configured respectively for uplink and downlink transmissions regarding the wireless communication device,
• wherein the first set of BWP is associated with the at least one second set of BWPs based on at least one predetermined relationship.

A wireless communication node comprising:

• at least one processor configured to:
• configure a first set of bandwidth part (BWP) for a wireless communication device, wherein the first set of BWP includes a single BWP configured for either uplink or downlink transmission regarding the wireless communication device;
• and
• configure at least one second set of BWPs for the wireless communication device, wherein each of the second set of BWPs includes a pair of BWPs configured respectively for uplink and downlink transmissions regarding the wireless communication device,
• wherein the first set of BWP is associated with the at least one second set of BWPs based on at least one predetermined relationship.