Slide 9 doc.: IEEE 802.11-10/1092r0 Submission Simone Merlin, Qualcomm Incorporated September 2010 Example of acknowledgement for MU MIMO (III) Example of recovery after a missing BA, according to the rules in 9.9.1.4, as explained in slide 5 In this example, Ack policy is set to – Implicit Block Ack Request for STA1 – Block Ack for STA2 and STA3 STA1 sends a BA immediately after the downlink MU PPDU, AP polls STA2 but it does not receive a response AP then proceeds and polls STA3 after PIFS (as allowed by the multiple frame transmission rules specified in 9.9.1.4).
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