Granted Patent B2

US 12,562,945 · App. 18/379,929 · Granted Feb 24, 2026

Inventors: Hyoungjin Lim (Suwon-si, KR); Seijoon Shim (Suwon-si, KR); Jongho Oh (Suwon-si, KR); Hyeri Bang (Suwon-si, KR)

Assignee: SAMSUNG ELECTRONICS CO., LTD.

H04L27/20H04L27/0008H04L27/22H04L27/36H04L27/38

Abstract

Claims (90)

1 . A method performed by a distributed unit (DU), the method comprising:

generating, based on a modulation compression scheme, a modulation value corresponding to information bits;

generating, based on a shifting operation corresponding to the modulation compression scheme, user plane (U-plane) data corresponding to the modulation value; and

transmitting, to a radio unit (RU) through a fronthaul interface, a U-plane message comprising the generated U-plane data,

wherein, in case of the modulation compression scheme being binary phase shift keying (BPSK), the shifting operation is performed based on a first equation,

wherein, in case of the modulation compression scheme being any one of schemes other than BPSK, the shifting operation is performed based on a second equation different from the first equation,

wherein the modulation value is converted to a shifted value based on the shifting operation,

wherein the shifted value is converted to a hexadecimal (HEX) value,

wherein the U-plane data includes the HEX value, and

wherein the modulation value, the shifted value, and the HEX value are set to integers.

2 . The method of claim 1 , wherein the first equation is set to Y=X,

wherein the second equation is set to

Y

=

X

-

1

2

,

wherein X is the modulation value, and

wherein Y is the shifted value.

3 . The method of claim 1 , wherein the modulation value is obtained without scaling, based on the information bits.

4 . The method of claim 1 , further comprising:

transmitting, to the RU through a control plane (C-plane) message, information indicating how to perform the shifting operation,

wherein the C-plane message comprises section extension information, and

wherein the section extension information comprises a constellation shift flag (csf) that is set to one (1).

5 . An electronic device comprising:

at least one transceiver comprising a fronthaul transceiver; and

at least one processor coupled with the at least one transceiver, wherein the at least one processor is configured to:

generate, based on a modulation compression scheme, a modulation value corresponding to information bits;

generate, based on a shifting operation corresponding to the modulation compression scheme, user plane (U-plane) data corresponding to the modulation value; and

transmit, to a radio unit (RU) through a fronthaul interface, a U-plane message comprising the generated U-plane data,

wherein, in case of the modulation compression scheme being binary phase shift keying (BPSK), the shifting operation is performed based on a first equation,

wherein, in case of the modulation compression scheme being any one of schemes other than BPSK, the shifting operation is performed based on a second equation different from the first equation,

wherein the modulation value is converted to a shifted value based on the shifting operation,

wherein the shifted value is converted to a hexadecimal (HEX) value,

wherein the U-plane data includes the HEX value, and

wherein the modulation value, the shifted value, and the HEX value are set to integers.

6 . The electronic device of claim 5 , wherein the first equation is set to Y=X,

wherein the second equation is set to

Y

=

X

-

1

2

,

wherein X is the modulation value, and

wherein Y is the shifted value.

7 . The electronic device of claim 5 , wherein the modulation value is obtained without scaling, based on the information bits.

8 . The electronic device of claim 5 , wherein the at least one processor is further configured to transmit, to the RU through a control plane (C-plane) message, information indicating how to perform the shifting operation,

wherein the C-plane message comprises section extension information, and

wherein the section extension information comprises a constellation shift flag (csf) set to one (1).

9 . A method performed by a radio unit (RU) comprising:

receiving a user plane (U-plane) message including U-plane data from a distributed unit (DU) through a fronthaul interface; and

obtaining, based on a shifting operation corresponding to a modulation compression scheme, a modulation value corresponding to U-plane data,

wherein in case of the modulation compression scheme being binary phase shift keying (BPSK), the shifting operation is performed based on a first equation, and

wherein in case of the modulation compression scheme being any one of schemes other than BPSK, the shifting operation is performed based on a second equation different from the first equation,

wherein the U-plane data includes a hexadecimal (HEX) value,

wherein the HEX value is converted to a shifting value,

wherein the shifting value is converted to the modulation value based on the shifting operation, and

wherein the modulation value, the shifting value, and the HEX value are set to integers.

10 . The method of claim 9 , wherein the first equation is set to Y=X,

wherein the second equation is set to Y=2X+1,

wherein X is the shifting value, and

wherein Y is the modulation value.

11 . The method of claim 9 , wherein the modulation value is obtained without scaling, based on information bits.

12 . The method of claim 9 , further comprising:

receiving information indicating how to perform the shifting operation through a control plane (C-plane) message,

wherein the C-plane message comprises section extension information, and

wherein the section extension information comprises a constellation shift flag (csf) set to one (1).

13 . An electronic device comprising:

at least one transceiver comprising a fronthaul transceiver; and

at least one processor coupled with the at least one transceiver, wherein the at least one processor is configured to:

receive, through a fronthaul interface, a user plane (U-plane) message comprising U-plane data from a distributed unit (DU); and

obtain, based on a shifting operation corresponding to a modulation compression scheme, a modulation value corresponding to U-plane data,

wherein, in case of the modulation compression scheme being binary phase shift keying (BPSK), the modulation compression scheme is performed based on a first equation,

wherein, in case of the modulation compression scheme being any one of schemes other than the BPSK, the modulation compression scheme is performed based on a second equation different from the first equation,

wherein the U-plane data includes a hexadecimal (HEX) value,

wherein the HEX value is converted to a shifting value,

wherein the shifting value is converted to the modulation value based on the shifting operation, and

wherein the modulation value, the shifting value, and the HEX value are set to integers.

14 . The electronic device of claim 13 , wherein the first equation is set to Y=X,

wherein the second equation is set to Y=2X+1,

wherein X is the shifting value, and

wherein Y is the modulation value.

15 . The electronic device of claim 13 , wherein the modulation value is obtained without scaling, based on information bits.

16 . The electronic device of claim 13 , wherein the at least one processor is further configured to receive, through a control plane (C-plane) message, information indicating how to perform the shifting operation,

wherein the C-plane message comprises section extension information, and

wherein the section extension information comprises a constellation shift flag (csf) that is set to one (1).

Assignments (1)

Priority Claims (3)

Continuity (2)

References Cited (31)