A process for managing network congestion uses crowd-sourced real-time information about current conditions in a network. The crowd-sourced real-time information may include information on a shared channel, such as a cell of a wireless network, produced by monitoring data sessions in the network and using mapping information that maps IP addresses of the data sessions to cell identifiers to associate measurements of the data sessions with corresponding cells. The measurements corresponding to a cell may be used to create and/or update a congestion profile for the cell, and the congestion profile may be used to select and set parameters of a congestion control algorithm. The congestion control algorithm may include an Initial Congestion Window Algorithm for controlling a congestion window.