The effect of call admission policies on the system benefit of CDMA communication networks View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2011-04

AUTHORS

Kuo-Chung Chu, Frank Yeong-Sung Lin, Lun-Ping Hung

ABSTRACT

Previous studies of call admission control (CAC) in mobile communication networks focused on call blocking and call dropping mechanisms. However, achieving global optimization of the system benefit is a complicated process. In this paper, we propose a benefit optimization model that accommodates as many users as possible, while simultaneously maintaining system-wide quality of service (QoS) in terms of admission control. To clarify the CAC concept, we construct a framework of CAC policies, derive associated interference models based on the framework, and then investigate the effects of the policies on the system benefit. In addition, to solve the complicated integer programming problem, we adopt the Lagrangean relaxation approach, and employ Lagrangean multipliers to perform sensitivity analysis of several parameters. The contribution of this study is twofold: the novel problem formulation and the improvement in the system benefit. The computational results demonstrate that the system accrues more benefit as new traffic is loaded and the number of users increases. Meanwhile, the sensitivity analysis shows that proper assignment of the strength of power-controlled signals is a key factor in the global optimization of the system benefit. More... »

PAGES

285-297

References to SciGraph publications

  • 2009-02-23. Lagrangean relaxation for integer programming in APPROACHES TO INTEGER PROGRAMMING
  • 2009-12. Adaptive channel reservation for call admission control to support prioritized soft handoff calls in a cellular CDMA system in ANNALS OF TELECOMMUNICATIONS
  • 1974-12. Validation of subgradient optimization in MATHEMATICAL PROGRAMMING
  • 1996-04. A tabu search algorithm for frequency assignment in ANNALS OF OPERATIONS RESEARCH
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    http://scigraph.springernature.com/pub.10.1007/s11235-010-9293-3

    DOI

    http://dx.doi.org/10.1007/s11235-010-9293-3

    DIMENSIONS

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    134 https://www.grid.ac/institutes/grid.412146.4 schema:alternateName National Taipei University of Nursing and Health Science
    135 schema:name Department of Information Management, National Taipei College of Nursing, Taipei, Taiwan ROC
    136 rdf:type schema:Organization
     




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