Patent ID: 11949479
Assignee: NOKIA TECHNOLOGIES OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. Said method of claim 2, wherein:
a distance between each group is given by:, v
    
     Ω
     i
    
   
   =
   
    mod
    (
    
     
      
       ❘
       "\[LeftBracketingBar]"
      
      
       
        Ω
        i
       
       -
       
        Ω
        
         i
         ′
        
       
      
      
       ❘
       "\[RightBracketingBar]"
      
     
     ,
     
      ⌈
      
       
        
         
          ❘
          "\[LeftBracketingBar]"
         
         
          W
          BS
         
         
          ❘
          "\[RightBracketingBar]"
         
        
        +
        1
       
       2
      
      ⌉
     
    
    )
   
  
  ;
 

wherein i′=mod (i, |Ω|)+1, vΩi is the distance between the i-th group and i′-th group, Ωi is the precoding index of the i-th group in the set Ω, Ωi′ is the precoding index of the i′-th group in the set Ω, and |WBS| the number of precoders of the codebook; and
the selecting the at least two groups uses distances between the at least two groups of the multiple groups.