General weighted fairness and its support in explicit rate switch algorithms

This paper gives a new definition of,general weighted (GW) fairness and sho ws how this can achieve various fairness definitions, such as those mention ed in the ATM Forum TM 3.0 specifications. The GW fairness can be achieved by calculating the: ExcessFairshare (weighted fairshare of the left over ba ndwidth) for each VC. We show how a switch algorithm can be modified to sup port the GW fairness by using the ExcessFairshare term, We use ERICA+ as an example switch algorithm and show how it can be modified to achieve the GW fairness. For simulations, the weight parameters of the GW fairness are ch osen to map a typical pricing policy. Simulation results are presented to d emonstrate that, the modified switch algorithm achieves GW fairness. An ana lytical proof for convergence of the modified ERICA+ algorithm is given in the appendix. (C) 2000 Elsevier Science B.V. All rights reserved.