Device and method for fronthaul transmission in wireless communication system

A method performed by a radio unit (RU) in a wireless communication system, the method comprising:

• receiving, from a distributed unit (DU), a control message including information on a nulling layer for a user equipment (UE) identifier (ID) based beamforming, wherein a type of the control message is section type 5;
• and
• generating beamforming weights for UE IDs,
• wherein the information on the nulling layer is included in a section extension of the section type 5, and
• wherein the information on the nulling layer indicates whether a layer corresponding to the UE ID is a nulling layer.

A distributed unit (DU) of a wireless communication system, the DU comprising:

• a transceiver;
• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor, cause the DU to:
• transmit, to a radio unit (RU), a control message including information on a nulling layer for a user equipment (UE) identifier (ID) based beamforming,
• wherein a type of the control message is section type 5,
• wherein the information on the nulling layer is included in a section extension of the section type 5, and
• wherein the information on the nulling layer indicates whether a layer corresponding to the UE ID is the nulling layer.

A radio unit (RU) of a wireless communication system, the RU comprising:

• a transceiver;
• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor, cause the RU to:
• receive, from a distributed unit (DU), a control message including information on a nulling layer for a user equipment (UE) identifier (ID) based beamforming, wherein a type of the control message is section type 5, and
• generate beamforming weights for UE IDs,
• wherein the information on the nulling layer is included in a section extension of the section type 5, and
• wherein the information on the nulling layer indicates whether a layer corresponding to the UE ID is a nulling layer.