A Grouping Harmony Search Algorithm for Assigning Resources to Users in WCDMA Mobile Networks

  • Adrian Aybar-Ruiz
  • Lucas CuadraEmail author
  • Javier Del Ser
  • Jose Antonio Portilla-Figueras
  • Sancho Salcedo-Sanz
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 514)


This paper explores the feasibility of a particular implementation of a Grouping Harmony Search (GHS) algorithm to assign resources (codes, aggregate capacity, power) to users in Wide-band Code Division Multiple Access (WCDMA) networks. We use a problem formulation that takes into account a detailed modeling of loads factors, including all the interference terms, which strongly depend on the assignment to be done. The GHS algorithm aims at minimizing a weighted cost function, which is composed of not only the detailed load factors but also resource utilization ratios (for aggregate capacity, codes, power), and the fraction of users without service. The proposed GHS is based on a particular encoding scheme (suitable for the problem formulation) and tailored Harmony Memory Considering Rate and Pitch Adjusting Rate processes. The experimental work shows that the proposed GHS algorithm exhibits a superior performance than that of the conventional approach, which minimizes only the load factors.


Harmony Search Grouping Harmony Search Wide-band Code Division Multiple Access mobile networks 



This work has been partially supported by projects TIN2014-54583-C2-2-R (Spanish Ministerial Commission of Science and Technology) and S2013ICE-2933_02 (Comunidad Autónoma de Madrid).


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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Adrian Aybar-Ruiz
    • 1
  • Lucas Cuadra
    • 1
    Email author
  • Javier Del Ser
    • 2
    • 3
    • 4
  • Jose Antonio Portilla-Figueras
    • 1
  • Sancho Salcedo-Sanz
    • 1
  1. 1.Universidad de AlcaláAlcalá de Henares, MadridSpain
  2. 2.TECNALIADerioSpain
  3. 3.University of the Basque Country EHU/UPVBilbaoSpain
  4. 4.Basque Center for Applied Mathematics (BCAM)BilbaoSpain

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