This paper presents a Connection Admission Control (CAC) algorithm for Wide-CDMA (WCDMA) networks based on an Approximate Dynamic Programming (ADP) approach: the network is modeled as a Markov Decision Process (MDP), and ADP algorithms are used to compute the optimal admission policy. Two innovative concept are introduced: i) by formulating the problem as a linear programming problem, the blocking probabilities of the different classes of service supported by the network are controlled by appropriately modifying the reward function; ii) on the ground of practical considerations on the CAC problem, a restricted structure policy is determined, based on the reduction of the action space for low load conditions. Numerical simulation results show the effectiveness of the approach.
An Approximate Dynamic Programming Approach to Admission Control in WCDMA Networks / Pietrabissa, Antonio; ANTICOLI BORZA, D.. - (2006), pp. 2087-2092. (Intervento presentato al convegno 2006 IEEE International Conference on Control Applications, CCA 2006 tenutosi a Munich; Germany) [10.1109/CACSD-CCA-ISIC.2006.4776962].
An Approximate Dynamic Programming Approach to Admission Control in WCDMA Networks
PIETRABISSA, Antonio
;
2006
Abstract
This paper presents a Connection Admission Control (CAC) algorithm for Wide-CDMA (WCDMA) networks based on an Approximate Dynamic Programming (ADP) approach: the network is modeled as a Markov Decision Process (MDP), and ADP algorithms are used to compute the optimal admission policy. Two innovative concept are introduced: i) by formulating the problem as a linear programming problem, the blocking probabilities of the different classes of service supported by the network are controlled by appropriately modifying the reward function; ii) on the ground of practical considerations on the CAC problem, a restricted structure policy is determined, based on the reduction of the action space for low load conditions. Numerical simulation results show the effectiveness of the approach.File | Dimensione | Formato | |
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