Hello,
p is an estimation of the network congestion: In other words, every fixed period of time (e.g. 1 RTT), p is updated by looking at the fraction of packets that were marked during that window of time. The window is reduced by p/2 instead of p to avoid dramatical drops (if p is 1, the congestion window becomes 0, which is unwanted obviously).
This makes sure that at worst case, the congestion window is cut by half, which becomes similar to TCP
Hope this answers your question :)
p is an estimation of the network congestion: In other words, every fixed period of time (e.g. 1 RTT), p is updated by looking at the fraction of packets that were marked during that window of time. The window is reduced by p/2 instead of p to avoid dramatical drops (if p is 1, the congestion window becomes 0, which is unwanted obviously).
This makes sure that at worst case, the congestion window is cut by half, which becomes similar to TCP
Hope this answers your question :)
