Method and apparatus for communication using fronthaul interface
Disclosed are a method and an apparatus for communication using fronthaul interfaces. An operation method of a first communication node includes transmitting a section type 8 message #1 including numerology-related information #1; transmitting a section type 9 message #1 including channel information of each of one or more second communication nodes indicated by the section type 8 message #1 and the numerology related information #1, transmitting a section type 8 message #2 including numerology-related information #2 other than the numerology-related information #1; and transmitting a section type 9 message #2 including channel information of each of one or more third communication nodes indicated by the section type 8 message #2 and the numerology-related information #2.
1. An operation method of a first communication node in a communication system supporting an open-radio access network (O-RAN) fronthaul interface, the operation method comprising:
transmitting a first section type 8 message including first numerology-related information; and
transmitting a first section type 9 message including channel information of each of one or more second communication nodes indicated by the first section type 8 message and the first numerology related information,
wherein the first numerology-related information includes frame structure information, cyclic prefix (CP) length information, and frequency offset information.
2. The operation method according to claim 1 , further comprising:
transmitting a second section type 8 message including second numerology-related information other than the first numerology-related information; and
transmitting a second section type 9 message including channel information of each of one or more third communication nodes indicated by the second section type 8 message and the second numerology-related information.
3. The operation method according to claim 1 , wherein the first numerology-related information includes further time offset information.
4. The operation method according to claim 2 , wherein each of the first section type 8 message and the second section type 8 message includes a plurality of sections, and the plurality of sections indicate different frequency offsets.
5. The operation method according to claim 2 , wherein channel information of the second communication node indicated by an identifier included in each of sections included in the first section type 8 message is indicated by a section mapped to the identifier of the second communication node among sections included in the first section type 9 message, and channel information of the third communication node indicated by an identifier included in each of sections included in the second section type 8 message is indicated by a section mapped to the identifier of the third communication node among sections included in the second section type 9 message.
6. The operation method according to claim 2 , wherein the first section type 8 message includes information included in the section type 5 message for the O-RAN fronthaul interface and the first numerology-related information, and the second section type 8 message includes the information included in the section type 5 message and the second numerology-related information.
7. The operation method according to claim 2 , wherein each of the first section type 9 message and the second section type 9 message is generated based on a section type 6 message for the O-RAN fronthaul interface.
8. The operation method according to claim 2 , wherein the first section type 8 message, the second section type 8 message, the first section type 9 message, and the second section type 9 message are used for a channel-information-based-beamforming operation.
9. The operation method according to claim 2 , wherein the first communication node is an O-RAN distributed unit (O-DU), each of the one or more second communication nodes and the one or more third communication nodes is an O-RAN radio unit (O-RU), and communication between the O-DU and the O-RU is performed using the O-RAN fronthaul interface.
10. An operation method of a first communication node in a communication system supporting an open-radio access network (O-RAN) fronthaul interface, the operation method comprising:
transmitting a first section type 8 message including first numerology-related information; and
transmitting a first section type 6 message including channel information of each of one or more second communication nodes indicated by the first section type 8 message,
wherein the first numerology-related information includes frame structure information, cyclic prefix (CP) length information, and frequency offset information.
11. The operation method according to claim 10 , further comprising:
transmitting a second section type 8 message including second numerology-related information other than the first numerology-related information; and
transmitting a second section type 6 message including channel information of each of one or more third communication nodes indicated by the second section type 8 message.
12. The operation method according to claim 10 , wherein of the first numerology-related information includes further time offset information.
13. The operation method according to claim 11 , wherein each of the first section type 8 message and the second section type 8 message includes a plurality of sections, and the plurality of sections indicate different frequency offsets.
14. The operation method according to claim 11 , wherein channel information of the second communication node indicated by an identifier included in each of sections included in the first section type 8 message is indicated by a section mapped to the identifier of the second communication node among sections included in the first section type 6 message, and channel information of the third communication node indicated by an identifier included in each of sections included in the second section type 8 message is indicated by a section mapped to the identifier of the third communication node among sections included in the second section type 6 message.
15. The operation method according to claim 11 , wherein the first section type 8 message includes information included in the section type 5 message for the O-RAN fronthaul interface and the first numerology-related information, and the second section type 8 message includes the information included in the section type 5 message and the second numerology-related information.
16. The operation method according to claim 11 , wherein the first communication node is an O-RAN distributed unit (O-DU), each of the one or more second communication nodes and the one or more third communication nodes is an O-RAN radio unit (O-RU), and communication between the O-DU and the O-RU is performed using the O-RAN fronthaul interface.