Methods, apparatus and systems for transmitting data based on asymmetric bandwidth parts

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

• receiving a configuration of at least one downlink bandwidth part (BWP) from a wireless communication node, wherein each of the at least one downlink BWP is configured for a downlink transmission to the wireless communication device;
• receiving a configuration of at least one uplink BWP from the wireless communication node, wherein each of the at least one uplink BWP is configured for an uplink transmission from the wireless communication device;
• receiving a configuration of a transmission resource on one uplink BWP of the at least one uplink BWP;
• transmitting an uplink signal on the transmission resource to the wireless communication node, wherein the uplink signal indicates a request for activating a downlink BWP associated with the at least one uplink BWP;
• and
• receiving uplink scheduling information from the wireless communication node as a response to the uplink signal.

A wireless communication node, comprising:

• at least one processor configured to:
• configure at least one downlink bandwidth part (BWP) for a wireless communication device, wherein each of the at least one downlink BWP is configured for a downlink transmission to the wireless communication device;
• configure at least one uplink BWP for the wireless communication device, wherein each of the at least one uplink BWP is configured for an uplink transmission from the wireless communication device;
• configure a transmission resource on one uplink BWP of the at least one uplink BWP for the wireless communication device to transmit an uplink signal on the transmission resource, wherein the uplink signal indicates a request for activating a downlink BWP associated with the at least one uplink BWP;
• and
• transmit, to the wireless communication device, a response to the uplink signal, wherein the response is a physical downlink control channel carrying scheduling information for uplink data transmission from the wireless communication device.