Method and apparatus for communication using fronthaul interface

Abstract

Disclosed are a method and an apparatus for communication using fronthaul interfaces. An operation method of a first communication node may include 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.

What is claimed is: 
     
         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 9 message and a first section type 8 message,   wherein the first section type 9 message includes channel information of each of one or more second communication nodes and first numerology related information, the first section type 8 message includes the first numerology related information, and the first numerology related information includes frame structure information and frequency offset information.   
     
     
         2 . The operation method according to  claim 1 , wherein each of the first section type 9 message and the first section type 8 message includes further cyclic prefix (CP) length information. 
     
     
         3 . The operation method according to  claim 1 , further comprising:
 transmitting a second section type 9 message and a second section type 8 message,   wherein the second section type 9 message includes channel information of each of one or more third communication nodes and second numerology-related information, and the second section type 8 message includes the second numerology-related information.   
     
     
         4 . The operation method according to  claim 3 , 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 3 , wherein channel information of a 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 a 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 3 , 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 3 , 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 3 , 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 3 , 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 . A first communication node in a communication system supporting an open-radio access network (O-RAN) fronthaul interface, comprising:
 a processor,   wherein the processor causes the first communication node to:   transmit a first section type 9 message and a first section type 8 message,   wherein the first section type 9 message includes channel information of each of one or more second communication nodes and first numerology related information, the first section type 8 message includes the first numerology related information, and the first numerology related information includes frame structure information and frequency offset information.   
     
     
         11 . The first communication node according to  claim 10 , wherein each of the first section type 9 message and the first section type 8 message includes further cyclic prefix (CP) length information. 
     
     
         12 . The first communication node according to  claim 10 , wherein the processor further causes the first communication node to:
 transmit a second section type 9 message and a second section type 8 message,   wherein the second section type 9 message includes channel information of each of one or more third communication nodes and second numerology-related information, and the second section type 8 message includes the second numerology-related information.   
     
     
         13 . The first communication node according to  claim 12 , 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 first communication node according to  claim 12 , wherein channel information of a 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 a 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. 
     
     
         15 . The first communication node according to  claim 12 , 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 first communication node according to  claim 12 , 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. 
     
     
         17 . The first communication node according to  claim 12 , 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. 
     
     
         18 . The first communication node according to  claim 12 , 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.