Patent ID: 11888567
Assignee: LG ELECTRONICS INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A base station (BS) operating in a wireless communication system, the BS comprising:
one or more transceivers;
one or more processors; and
one or more memories operatively connectable to the one or more processors,
wherein when the one or more memories are executed by the one or more processors, the one or more memories store instructions which cause the one or more processors to perform operations,
wherein the operations include
transmitting configuration information related to reporting of channel state information (CSI);
transmitting a channel state information-reference signal (CSI-RS); and
receiving the CSI,
wherein the CSI includes first information for selecting a plurality of antenna ports related to the CSI-RS,
wherein K antenna ports are selected from P antenna ports related to the CSI-RS, based on the first information,
wherein, for each polarization related to the plurality of antenna ports, K/2 antenna ports are selected from P/2 antenna ports related to the CSI-RS based on a combination of P/2 and K/2, and
wherein a bitwidth for the first information is, ⌈
   
    
     log
     2
    
    (
    
     
      
       
        P
        /
        2
       
      
     
     
      
       
        K
        /
        2
       
      
     
    
    )
   
   ⌉
  
  ,, ┌ ┐ is a ceiling function and, (
  
   
    
     x
    
   
   
    
     y
    
   
  
  ), is a combinatorial coefficient C(x, y).