> In the mean while, we've started work on various AQM and buffer > management systems, at www.bufferbloat.net. SFB (Stochastic Fair Blue) > went upstream into Linux to aid testing last month, and we have an > implementation of eBDP as well with which we are experimenting. > Wireless is much more of a challenge than the classic internet router > case. Please come help. >
In my context "Wireless" means "mobile" and the challenge there is that "I lost a packet" doesn't mean "there is congestion". It most likely means the user walked in front of a pole, the signal faded briefly, they dropped a packet and are perfectly fine now. So in that context, tcp/ip behaves as if it is seeing congestion when it is really seeing a momentary loss of connectivity that comes right back as soon as the end node moves 5 feet to the left. The right answer there might be ubiquitous support of ECN and treating packet loss in the absence of ECN as a connectivity issue and not a congestion issue but we are a long way from proper ECN support. I will have another look at the site, it has been a while since I was there last. George
