Device and method for fronthaul transmission in wireless communication system
The disclosure relates to a 5 th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4 th generation (4G) communication system such as long term evolution (LTE). A method performed by a digital unit (DU) of a base station in a wireless communication system is provided. The method includes configuring, in a first control message, a section extension field including additional information, and transmitting the first control message to a radio unit (RU) of the base station, wherein the first control message includes information on one or more terminals scheduled in the base station.
1 . A method performed by a distributed unit (DU) in a wireless communication system, the method comprising:
transmitting, 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.
2 . The method of claim 1 , wherein, when the layer corresponding to the UE ID is set to the nulling layer, a beamforming weight of the corresponding layer is configured to 0.
3 . The method of claim 1 , wherein a field length of the information on the nulling layer is 8 bits.
4 . The method of claim 1 , wherein the information on the nulling layer is indicated for each layer.
5 . The method of claim 1 ,
wherein the control message further includes an extension flag (ef), an extension type (extType), and an extension length (extLen),
wherein a field length of the extension flag is 1 bit,
wherein the extension type includes a parameter indicating whether a layer is null, and
wherein the extension length includes at least one word.
6 . 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.
7 . The method of claim 6 , wherein the generating of the beamforming weights further comprises, when a layer corresponding to the UE ID is configured as a nulling layer, generating a beamforming weight of the corresponding layer to be 0.
8 . The method of claim 6 , wherein a field length of the information on the nulling layer is 8 bits.
9 . The method of claim 6 , wherein the information on the nulling layer is indicated for each layer.
10 . The method of claim 6 ,
wherein the control message further comprises an extension flag (ef), an extension type (extType), and an extension length (exLen),
wherein a field length of the extension flag is 1 bit,
wherein the extension type includes a parameter indicating whether a layer is nulled, and
wherein the extension length includes at least one word.
11 . 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.
12 . The DU of claim 11 ,
wherein, when the layer corresponding to the UE ID is set to the nulling layer, a beamforming weight of the corresponding layer is configured to 0.
13 . The DU of claim 11 ,
wherein a field length of the information on the nulling layer is 8 bits, and
wherein the information on the nulling layer is indicated for each layer.
14 . The DU of claim 11 ,
wherein the control message further includes an extension flag (ef), an extension type (extType), and an extension length (extLen),
wherein a field length of the extension flag is 1 bit,
wherein the extension type includes a parameter indicating whether a layer is null, and
wherein the extension length includes at least one word.
15 . 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.
16 . The RU of claim 15 ,
wherein the generating of the beamforming weights further comprises, when a layer corresponding to the UE ID is configured as a nulling layer, generating a beamforming weight of the corresponding layer to be 0.
17 . The RU of claim 15 ,
wherein a field length of the information on the nulling layer is 8 bits, and
wherein the information on the nulling layer is indicated for each layer.
18 . The RU of claim 15 ,
wherein the control message further comprises an extension flag (ef), an extension type (extType), and an extension length (exLen),
wherein a field length of the extension flag is 1 bit,
wherein the extension type includes a parameter indicating whether a layer is nulled, and
wherein the extension length includes at least one word.