Patent ID: 11968717
Assignee: ATLAS GLOBAL TECHNOLOGIES LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A non-transitory computer-readable media (CRM) including computer programming instructions that, when executed by a wireless communication device, cause the wireless communication device to perform steps comprising:
receiving a High-Efficiency (HE) PHY Protocol Data Unit (PPDU) including a data field;
estimating a duration of a data field;
determining a number of symbols in the data field according to, N
   
    S
    ⁢
    Y
    ⁢
    M
   
  
  =
  
   
    ⌊
    
     
      T
      
       DATA
       ⁢
       _
       ⁢
       EST
      
     
     
      T
      
       S
       ⁢
       Y
       ⁢
       M
      
     
    
    ⌋
   
   -
   
    b
    2, wherein NSYM is the number of symbols, TDATA_EST is the estimated duration of the data field, TSYM is a duration of a symbol included in the data field, and b2 is a value of a Packet Extension (PE) Disambiguity bit of a PE field of an HE Signal A (HE-SIG-A) field of the HE PPDU;
determining a duration of a packet extension of the HE PPDU according to, T
    
     P
     ⁢
     E
    
   
   =
   
    
     ⌊
     
      
       
        T
        
         DATA
         ⁢
         _
         ⁢
         EST
        
       
       -
       
        (
        
         
          N
          
           S
           ⁢
           Y
           ⁢
           M
          
         
         ×
         
          T
          
           S
           ⁢
           Y
           ⁢
           M
          
         
        
        )
       
      
      4
     
     ⌋
    
    ×
    4
    ⁢
       
    µs
   
  
  ;, wherein TPE is the duration of the packet extension; and
determining a state of a primary channel used to receive the HE PPDU as idle after waiting for the duration of the packet extension.