@incollection{eprints1781, note = {30th IEEE International Conference on Computer Communications held in Shanghai, China, April 10th-15th, 2011}, publisher = {IEEE}, pages = {466--470}, author = {Mario Marchese and Marco Cello and Giorgio Gnecco and Marcello Sanguineti}, booktitle = {Proceedings of IEEE INFOCOM 2011}, title = {Structural Properties of Optimal Coordinate-Convex Policies for CAC with Nonlinearly-Constrained Feasibility Regions}, year = {2011}, abstract = {Necessary optimality conditions for Call Admission Control (CAC) problems with nonlinearly-constrained feasibility regions and two classes of users are derived. The policies are restricted to the class of coordinate-convex policies. Two kinds of structural properties of the optimal policies and their robustness with respect to changes of the feasibility region are investigated: 1) general properties not depending on the revenue ratio associated with the two classes of users and 2) more specific properties depending on such a ratio. The results allow one to narrow the search for the optimal policies to a suitable subset of the set of coordinate-convex policies.}, url = {http://eprints.imtlucca.it/1781/}, keywords = {Call Admission Control, Feasibility Region, Coordinate Convex Policies.} }