Granted Patent B2

US 12,407,448 · App. 18/055,366 · Granted Sep 2, 2025

Inventor: Sanil Rama Chandran (McKinney, TX)

Assignee: Samsung Electronics Co., Ltd.

H04L1/1607

Abstract

Claims (90)

1. A method performed by an open-radio access network (O-RAN) distributed unit (O-DU), the method comprising:

transmitting, to an O-RAN radio unit (O-RU) through a fronthaul interface, one or more control plane (C-plane) messages; and

receiving, from the O-RU through the fronthaul interface, an acknowledgement (ACK)/negative-acknowledgement (NACK) feedback message for the one or more C-plane messages,

wherein each C-plane message of the one or more C-plane messages includes section extension information for requesting ACK/NACK feedback,

wherein the section extension information includes a request identifier (ID) used to identify a section description for which the ACK/NACK feedback is requested, and

wherein the ACK/NACK feedback message includes at least one of ACK information for indicating a request ID of a correctly decoded section description or NACK information for indicating a request ID of an incorrectly decoded section description.

2. The method of claim 1 , wherein the incorrectly decoded section description is dropped after section extension information associated with the incorrectly decoded section description is decoded.

3. The method of claim 1 ,

wherein the section extension information includes an extension type for an ACK/NACK request and an extension length indicating a size of the section extension information as one word corresponding to 4 bytes,

wherein the extension type is indicated by 7 bits of the section extension information,

wherein the extension length is indicated by 8 bits of the section extension information, and

wherein the request ID is indicated by 16 bits of the section extension information.

4. The method of claim 1 , further comprising:

based on identifying that an ACK/NACK status of a section description in the one or more C-plane messages is not received by an end of a receive window, identifying that the section description is dropped before section extension information corresponding to the dropped section description is decoded.

5. The method of claim 1 ,

wherein the ACK/NACK feedback message is associated with a C-plane message and includes a transport header and an application header,

wherein the application header includes a frame identifier, a subframe identifier, a slot identifier, and a section type indicating a section type 8 for sending ACK/NACK from the O-RU to the O-DU,

wherein the ACK/NACK feedback message includes information for indicating a number of ACKs included in the ACK/NACK feedback message and information for indicating a number of NACKs included in the ACK/NACK feedback message,

wherein the number of ACKs is indicated by 8 bits of the ACK/NACK feedback message, and

wherein the number of NACKs is indicated by 8 bits of the ACK/NACK feedback message.

6. A method performed by an open-radio access network (O-RAN) radio unit (O-RU), the method comprising:

receiving, from an O-RAN distributed unit (O-DU) through a fronthaul interface, one or more control plane (C-plane) messages; and

transmitting, to the O-RU through the fronthaul interface, an acknowledgement (ACK)/negative-acknowledgement (NACK) feedback message for the one or more C-plane messages,

wherein each C-plane message of the one or more C-plane messages includes section extension information for requesting ACK/NACK feedback,

wherein the section extension information includes a request identifier (ID) used to identify a section description for which the ACK/NACK feedback is requested, and

wherein the ACK/NACK feedback message includes at least one of ACK information for indicating a request ID of a correctly decoded section description or NACK information for indicating a request ID of an incorrectly decoded section description.

7. The method of claim 6 , wherein the incorrectly decoded section description is dropped after section extension information associated with the incorrectly decoded section description is decoded.

8. The method of claim 6 ,

wherein the section extension information includes an extension type for an ACK/NACK request and an extension length indicating a size of the section extension information as one word corresponding to 4 bytes,

wherein the extension type is indicated by 7 bits of the section extension information,

wherein the extension length is indicated by 8 bits of the section extension information, and

wherein the request ID is indicated by 16 bits of the section extension information.

9. The method of claim 6 , wherein the ACK/NACK feedback message is transmitted within an ACK transmit window.

10. The method of claim 6 ,

wherein the ACK/NACK feedback message is associated with a C-plane message and includes a transport header and an application header,

wherein the application header includes a frame identifier, a subframe identifier, a slot identifier, and a section type indicating a section type 8 for sending ACK/NACK from the O-RU to the O-DU,

wherein the ACK/NACK feedback message includes information for indicating a number of ACKs included in the ACK/NACK feedback message and information for indicating a number of NACKs included in the ACK/NACK feedback message,

wherein the number of ACKs is indicated by 8 bits of the ACK/NACK feedback message, and

wherein the number of NACKs is indicated by 8 bits of the ACK/NACK feedback message.

11. A device of an open-radio access network (O-RAN) distributed unit (O-DU), the device comprising:

a transceiver; and

a processor operably coupled to the transceiver and configured to control the transceiver to:

transmit, to an O-RAN radio unit (O-RU) through a fronthaul interface, one or more control plane (C-plane) messages; and

receive, from the O-RU through the fronthaul interface, an acknowledgement (ACK)/negative-acknowledgement (NACK) feedback message for the one or more C-plane messages,

wherein each C-plane message of the one or more C-plane messages includes section extension information for requesting ACK/NACK feedback,

wherein the section extension information includes a request identifier (ID) used to identify a section description for which the ACK/NACK feedback is requested, and

wherein the ACK/NACK feedback message includes at least one of ACK information for indicating a request ID of a correctly decoded section description or NACK information for indicating a request ID of an incorrectly decoded section description.

12. The device of claim 11 , wherein the incorrectly decoded section description is dropped after section extension information associated with the incorrectly decoded section description is decoded.

13. The device of claim 11 ,

wherein the section extension information includes an extension type for an ACK/NACK request and an extension length indicating a size of the section extension information as one word corresponding to 4 bytes,

wherein the extension type is indicated by 7 bits of the section extension information,

wherein the extension length is indicated by 8 bits of the section extension information,

wherein the request ID is indicated by 16 bits of the section extension information.

14. The device of claim 11 , wherein the processor is further configured to, based on identification that an ACK/NACK status of a section description in the one or more C-plane messages is not received by an end of a receive window, identify that the section description is dropped before section extension information corresponding to the dropped section description is decoded.

15. The device of claim 11 ,

wherein the ACK/NACK feedback message is associated with a C-plane message and includes a transport header and an application header,

wherein the application header includes a frame identifier, a subframe identifier, a slot identifier, and a section type indicating a section type 8 for sending ACK/NACK from the O-RU to the O-DU,

wherein the ACK/NACK feedback message includes information for indicating a number of ACKs included in the ACK/NACK feedback message and information for indicating a number of NACKs included in the ACK/NACK feedback message,

wherein the number of ACKs is indicated by 8 bits of the ACK/NACK feedback message, and

wherein the number of NACKs is indicated by 8 bits of the ACK/NACK feedback message.

16. A device of an open-radio access network (O-RAN) radio unit (O-RU), the device comprising:

a transceiver; and

a processor operably coupled to the transceiver and configured to control the transceiver to:

receive, from an O-RAN distributed unit (O-DU) through a fronthaul interface, one or more control plane (C-plane) messages, and

transmit, to the O-RU through the fronthaul interface, an acknowledgement (ACK)/negative-acknowledgement (NACK) feedback message for the one or more C-plane messages,

wherein each C-plane message of the one or more C-plane messages includes section extension information for requesting ACK/NACK feedback,

wherein the section extension information includes a request identifier (ID) used to identify a section description for which the ACK/NACK feedback is requested, and

wherein the ACK/NACK feedback message includes at least one of ACK information for indicating a request ID of a correctly decoded section description or NACK information for indicating a request ID of an incorrectly decoded section description.

17. The device of claim 16 , wherein the incorrectly decoded section description is dropped after section extension information associated with the incorrectly decoded section description is decoded.

18. The device of claim 16 ,

wherein the section extension information includes an extension type for an ACK/NACK request and an extension length indicating a size of the section extension information as one word corresponding to 4 bytes,

wherein the extension type is indicated by 7 bits of the section extension information,

wherein the extension length is indicated by 8 bits of the section extension information,

wherein the request ID is indicated by 16 bits of the section extension information.

19. The device of claim 16 ,

wherein the ACK/NACK feedback message is associated with a C-plane message and includes a transport header and an application header,

wherein the application header includes a frame identifier, a subframe identifier, a slot identifier, and a section type indicating a section type 8 for sending ACK/NACK from the O-RU to the O-DU,

wherein the ACK/NACK feedback message includes information for indicating a number of ACKs included in the ACK/NACK feedback message and information for indicating a number of NACKs included in the ACK/NACK feedback message,

wherein the number of ACKs is indicated by 8 bits of the ACK/NACK feedback message, and

wherein the number of NACKs is indicated by 8 bits of the ACK/NACK feedback message.

20. A method performed by an open-radio access network (O-RAN) distributed unit (O-DU), the method comprising:

transmitting, to an O-RAN radio unit (O-RU) through a fronthaul interface, a control plane (C-plane) message; and

receiving, from the O-RU through the fronthaul interface, an acknowledgement (ACK)/negative-acknowledgement (NACK) feedback message for the C-plane message,

wherein the C-plane message includes section extension information for an ACK/NACK request,

wherein the section extension information includes an extension type for indicating the ACK/NACK request, an extension length indicating a size of the section extension information as one word corresponding to 4 bytes, and a request identifier (ID) used to identify a section description for the ACK/NACK request, and

wherein the extension type is indicated by 7 bits, the extension length is indicated by 8 bits, and the request ID is indicated by 16 bits,

wherein the ACK/NACK feedback message is associated with a C-plane message and includes a transport header and an application header,

wherein the application header includes a frame identifier, a subframe identifier, a slot identifier, and a section type indicating a section type 8 for sending ACK/NACK from the O-RU to the O-DU,

wherein the ACK/NACK feedback message includes information for indicating a number of ACKs included in the ACK/NACK feedback message, information for indicating a number of NACKs included in the ACK/NACK feedback message, and at least one of ACK information for indicating a request ID of a correctly decoded section description or NACK information for indicating a request ID of an incorrectly decoded section description,

wherein the number of ACKs is indicated by 8 bits and the number of NACKs is indicated by 8 bits.

Assignments (1)

Continuity (2)

References Cited (24)

Cited By (1)

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