Flow Control via Pricing: a Feedback Perspective

This paper discusses network ow control from the perspective of multivariable feedback theory. We build on recent research on ow control based on pricing signals , which has cast these problems in terms amenable to mathematical analysis, and more speciically we focus on the control algorithm of 8]. After reviewing our recent result regarding the stability of this method, we move on to issues of performance and delay robustness. These are studied with tools of linear loop-shaping, which exhibit the main tradeoos involved in parameter selection for these algorithms. An illustrative example is provided.