Massachusetts Institute of Technology: Hari Balakrishnan's "End-to-End Congestion Control"

Read this tutorial to understand congestion management at different levels: end-to-end, router assisted, and pricing based.

Click http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-829-computer-networks-fall-2002/lecture-notes/L8e2ecc.pdf link to open resource.