Re: [quicwg/base-drafts] When the sender is using standard Reno congestion control, ack every ~2 packets (#1428)

[ianswett <[e-mail]>]

To clarify, my proposal is that we should document an acknowledgement approach we expect to work well with the described congestion controller, Reno.  Do you think that would not be useful?

If we want to add a mechanism to indicate to the receiver that acknowledging packets less frequently is ok, then as you said, we need one or more transport parameters.  

What transport parameter(s) do you have in mind? The two I can think of are the max number of packets newly acked at once and the interval between acks in fraction of an RTT or absolute time.  The current BBR approach is very adaptive, so it doesn't need to know the details of the receiver's behavior.  It's not clear to me how other congestion controllers will adapt to this, so it's not clear to me what information they need?

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