Robust Dynamic Admission Control for Unified Cell and Call QoS in Statistical Multiplexers.pdf

Robust Dynamic Admission Control for Unied Cell and Call QoS in Statistical Multiplexers  Debasis Mitra Martin I Reiman Jie Wang Bell Lab oratories Bell Lab oratories ATT Labs Lucent Technologies Lucent Technologies Holmdel NJ Murray Hill NJ Murray Hill NJ Novemb er Revised March Abstract The design of connection admission control CAC for a simple Markovian mo del of a multiservice statistical multiplexer is considered The pap er b egins by laying the foundation through several fundamental analytic concepts such as a SemiMarkov De cision Pro cess formulation of the design problem and time scale decomp osition b efore progressively leading up to real world requirements like robustness and simplicity of design Several numerical illustrations are given The salient contributions of the pap er are A unied treatment of multiclass cell and call QoS A CAC design which is robust ie fair and ecient Simplicity in the CAC design together with an evaluation of the tradeo with p erformance An analytic technique for computing the feasibility region in the space of call arrival rates where some control exists to satisfy QoS The discovery of near linearity of the b oundary of the feasible region which is then used to decomp ose the design problem A unied treatment of aggressive and conservative forms of CAC the latter b eing conventional and the former yield ing b etter call level p erformance An eective bandwidth denition based on the aggressive form of CAC which inuences th