Admission control for differentiated services in future generation CDMA networks

Authors:
Hwee-Pink Tan;Rudesindo Núñez-Queija;Adriana F. Gabor;Onno J. Boxma
Affiliations:
Institute for Infocomm Research, 1 Fusionopolis Way, #21-01 Connexis, Singapore 138632, Singapore;CWI, P.O. Box 94079, 1090 GB Amsterdam, The Netherlands;Econometric Institute, Faculty of Economics, Erasmus University Rotterdam, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands;EURANDOM, P.O. Box 513, 5600 MB Eindhoven, The Netherlands and Department of Mathematics and Computer Science, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
Venue:
Performance Evaluation
Year:
2009

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Abstract

Future Generation CDMA wireless systems, e.g., 3G, can simultaneously accommodate flow transmissions of users with widely heterogeneous applications. As radio resources are limited, we propose an admission control rule that protects users with stringent transmission bit-rate requirements (''streaming traffic'') while offering sufficient capacity over longer time intervals to delay-tolerant users (''elastic traffic''). While our strategy may not satisfy classical notions of fairness, we aim to reduce congestion and increase overall throughput of elastic users. Using time-scale decomposition, we develop approximations to evaluate the performance of our differentiated admission control strategy to support integrated services with transmission bit-rate requirements in a realistic downlink transmission scenario for a single radio cell.