On 7 Jan 2013 09:35, "Michael Richardson" <m...@sandelman.ca> wrote: > > > I asked > > A comment was made a month ago or so about how long it takes wifi APs > > to switch from transmitting (unicast) to one station to another. That > > there was quite a large latency here, and that this was one reason that > > the AP designers wanted large buffers to accmulate, so that the > > switching time could be amortized over a larger number of packets. > > Pedro Tumusok <pedro.tumu...@gmail.com> replied > > I might be way of here, but to me this sounds like a-mpdu which is > > used to aggregate frames to get higher throughput. Thats in the > > specification, its > > in 802.11ac and I believe that it go introduced with 802.11n. > > > > It is there to mitigate the overhead of aquiring the channel. > > Does this mean that 802.11a,b do not suffer from this problem? >
They do not have that feature, but I assume they would still be bloated in other places for other reasons. The a-mpdu got tweaked a bit in ac, to always use it. Even for single frames. Not only for aggregate as in n.
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