Symantec's TCP Rate Control is very similar in concept to the "just-in-time" product flow control used in most modern manufacturing plants.
Symantec's TCP Rate Control can do the following:
Because packets are arriving in a "just-in-time" fashion, you don't have the waste of unnecessary packets crossing an expensive WAN link. TCP Rate Control also eliminates the inefficiency of having an unneeded inventory of packets sitting around in router queues.
Managing the window size is just one out of the four steps to TCP Rate Control. Window size management alone without these other (patented) steps would do very little to provide precise bandwidth management. A factory that ordered very precise amounts of raw materials but without doing accurate forecasting or specifying when they are to be delivered would be problematic.
For more information, refer to Appendix A in the PacketShaper white paper "Effectively Managing WAN, Internet Link and Application Traffic". To download the document (PDF):