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[STDS-802-11-TGBN] Motions Requested for COBF

Hi Alfred,

Please add the following PHY motions (all reached consensus in PHY adhoc without any objections based on document 11-25/0083r1) to the motions queue:

  1. Move to add the following to the 802.11bn SFD
    • 802.11bn defines the concept of a sync-reference AP and a sync-follower AP for CFO correction in COBF
      • Sync-follower AP pre-corrections needed
        • For sequential sounding:
          • All the NDPs sent by it during sounding phase that are sent for the purpose of sounding the STAs in the other BSS (Mandatory)
          • For the NDPs sent by it for sounding the STAs in its own BSS, it is recommended but not mandatory that the sync follower AP pre-correct those NDPs
        • For joint sounding
          • All the NDPs sent by it during the sounding phase (Mandatory)
        • The COBF sync and COBF PPDU during transmission phase using the same frequency pre-correction value as the sounding phase, when it is the sharing AP
      • Sync-reference AP does not pre-correct during transmission phase when it is the sharing AP

 

  1. Move to add the following to the 802.11bn SFD
    • The sync-follower AP shall use the NDPA frame sent by the sync-reference AP to pre-correct the NDP frequency to be within a TBD range (e.g., 350Hz) of the sync-reference AP’s frequency
      • Applies to sequential and joint sounding
      • The pre-correction of cross-BSS NDP and joint NDP is mandatory
      • The pre-correction of in-BSS NDPs is recommended but not a mandatory requirement

 

  1. Move to add the following to the 802.11bn SFD
    • The sharing AP is the AP that transmits the final sync frame before the COBF PPDU
      • Regardless of who is the sync-reference
      • Note: This ensures a consistent protocol and a consistent behavior at sharing AP

 

  1. Move to add the following to the 802.11bn SFD
    • The shared AP always pre-corrects COBF PPDU based on the final sync
      • To bring the two APs within a TBD frequency range of each other (e.g., ~350Hz)
      • Note: Regardless of which AP is the sync-reference, this ensures consistent behavior at shared AP

 

Thanks,

Sameer

 

 

 

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