Method and apparatus for communication in wireless communication system

A method performed by a network node in a wireless communication system, comprising:

• transmitting, to a user equipment (UE), a first signal including a trigger signal for triggering the UE to perform reporting or a signal for power supply;
• and
• receiving, from the UE, first information, in case that a third condition is met;
• wherein the third condition includes:
• energy of the second information or a backscattered first signal is greater than a third threshold.

A user equipment (UE) in a wireless communication system, the UE comprising:

• a transceiver configured to transmit and receive signals;
• and
• at least one processor coupled to the transceiver and configured to:
• receive, from a network node, a first signal including a trigger signal for triggering the UE to perform reporting or a signal for power supply, and
• report first information or receiving a second signal for the power supply based on energy of at least one of the first signal or power of the UE.

A network node in a wireless communication system, the network node comprising:

• a transceiver configured to transmit and receive signals;
• and
• at least one processor coupled to the transceiver and configured to:
• transmit, to a user equipment (UE), a first signal including a trigger signal for triggering the UE to perform reporting or a signal for power supply, and
• receive, from the UE, first information, in case that a third condition is met,
• wherein the third condition includes:
• energy of the second information or a backscattered first signal is greater than a third threshold.