Once you get to/above 1600 you have a trade-off to make, you cannot indicate the absolute worst case without paging any more. You could hope that STAs will retrieve their data and then you get free blocks, some Block Bitmaps won't need to be 0xFF, and then you have more space, even without resorting to other encodings. Overall it's also an interesting optimisation problem how to best encode this ... if you have clustered bits then a block bitmap is better, if there are sparse bits then Single AID could be better. I can't easily discern the cases right now where OLB or ADE would be better. But I think for an initial implementation you could just leave that aside, limit AIDs to <1600, implement only block encoding and accept that it's just not optimal in many cases, but at least you won't have to worry about not being able to include some data? johannes
