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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

CARRANZA, Héctor E; CHAVEZ, Luis; FISSORE, María L  y  SIMON, Silvia B. A Multiobjective Approach for Cellular  Systems Channel Assignment. Inf. tecnol. [online]. 2008, vol.19, n.1, pp.87-96. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642008000100011.

To improve the quality of service in cell systems, techniques of Dynamic Assignment Channels are used to reduce the probability of blocking calls. In this paper an algorithm of assignment channels is required to reduce the probability of blocking, extending the system capacity to add new calls. This is obtained by using an interchange of channels of current calls and reducing the restrictions of electromagnetic compatibility. According to this, the algorithm has to provide solutions of commitments between two different objectives; on the one hand reduce the amount of assignments, and on the other to do the same with the level of interference due to the flexible restrictions of electromagnetic compatibility. A heuristic focus based on the evolution paradigm is presented to solve the multi-objective optimization problem. Two evolutionary multi-objective algorithms (SPEAII y NSGA II) are compared by the use of two different metrics. The results show that the proposed  methodology can be applied to different generations of mobile communication systems.

Palabras clave : cellular networks; channel assignment; evolutionary algorithms; optimization.

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