Combined CAC and Forced Handoff for Mobile Network Performability

  • Idriss-Ismael Aouled
  • Hind Castel-Taleb
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7314)


In mobile networks, call admission control (CAC) is widely used in reaching of the quality of service (QoS) requirements. However, as the CACs schemes give priority to the handoff calls, the blocking probability is degraded. In this paper we propose a new scheme which is based on the combinaison of CAC scheme and load sharing policy between a cluster of surrounding cells. Our scheme forces some calls to handover, with conditions, to neighboring cells in order to avoid the blocking states in the serving cell. Thus we prove, in the case of one cell, that our scheme permits to improve both the dropping and blocking probabilities.

We use multidimensional’s Markov chains to model the systems because of the consideration of occupation and failure/reparations of channels. Therefore, it is difficult to deduce intuitively the relevance of our scheme versus others in the literatures. So, we apply a mathematical method based on stochastic comparisons in other to prove that our scheme provides better performance measures. We illustrate these proofs by numerical results in order to show the relevance of our mechanism to improve QoS of mobile networks.


Performability Handoff Load sharing QoS Stochastic comparisons Markov chains 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Ahmed, M.H.: Call admission control in wireless networks: a comprehensive survey. IEEE Communication Surveys and Tutorials 7(1), 50–69 (2005)Google Scholar
  2. 2.
    Ekiz, N., Salih, T., Kucukoner, S., Fidanboylu, K.: Overview of handoff techniques in cellular networks. International Journal of Information Technology 2(3), 132–136 (2005)Google Scholar
  3. 3.
    Mouly, M., Paulet, M.B.: The GSM system for mobile communication, M. Mouly, 49 rue Louise Brunner, Palaise, France (1992)Google Scholar
  4. 4.
    Lin, Y.-B., Mohan, S., Noerpel, A.: PCS channel assignmnet strategies for hand-off and initial access. IEEE Personal Comm. 3, 47–56 (1994)Google Scholar
  5. 5.
    Madan, B.B., Dhamaraja, S., Trivedi, K.S.: Combined Guard Channel and Mobile Assisted Handoff for Cellular Networks. IEEE Transactions on Vehicular Technology 57, 502–510 (2008)CrossRefGoogle Scholar
  6. 6.
    Acampora, A., Naghshineh, M.: An Architecture and Methodology for Mobile-Executed Handoff in Cellular ATM Networks. IEEE JSAC 12(8), 1365–1375 (1994)Google Scholar
  7. 7.
    Lin, H., Tzeng, S.: Double-Threshold Admission Control in Cluster-based Micro/Picocellular Wireless Networks. In: Proc. IEEE Vehic. Tech. Conf. (VTC 2000-Spring), Tokyo, vol. 2, pp. 1440–1444 (May 2000)Google Scholar
  8. 8.
    Koyuncu, O., Das, S., Ernam, H.: Dynamic Resource Assignment using Network Flows in Wireless Data Networks. In: Proc. IEEE Vehic. Tech. Conf. (VTC 1999), vol. 1, pp. 1–5 (1999)Google Scholar
  9. 9.
    Stewart, W.J.: Introduction to the numerical solution of Markov chains. Princeton University Press (1994)Google Scholar
  10. 10.
    Muller, A., Stoyan, D.: Comparison methods for Stochastic Models and Risks. J. Wiley and son in Probability and Statistics (2002)Google Scholar
  11. 11.
    Mokdad, L., Castel-Taleb, H.: Stochastic comparisons: a methodology for the performance evaluation of fixed and mobile networks. Computer Communications 31(17) (November 2008)Google Scholar
  12. 12.
    Fourneau, J.-M., Pekergin, N.: An Algorithmic Approach to Stochastic Bounds. In: Calzarossa, M.C., Tucci, S. (eds.) Performance 2002. LNCS, vol. 2459, pp. 64–88. Springer, Heidelberg (2002)CrossRefGoogle Scholar
  13. 13.
    Castel-Taleb, H., Ismael-Aouled, I., Pekergin, N.: Bounding techniques for transient analysis of G-Networks with catastrophes. In: 5th International ICST Conference on Performance Evaluation Methodologies and Tools, Valuetools 2011. ACM Sigmetrics, May 16-20 (2011)Google Scholar
  14. 14.
    Massey, W.: Stochastic orderings for Markov processes on partially ordered spaces. Mathematics of Operations Research 12(2) (May 1987)Google Scholar
  15. 15.
    Lindvall, T.: Lectures on the coupling method. Wiley series in Probability and Mathematical Statistics (1994)Google Scholar
  16. 16.
    Hong, D., Rappaport, S.S.: Traffic model and performance analysis for cellular mobile radio telephone systems with prioritized and nonprioritized handoff procedures. IEEE Transactions on Vehicular Technology 35(3), 77–92 (1986)CrossRefGoogle Scholar
  17. 17.
    McMillan, D.: Traffic modeling and analysis for cellular mobile networks. In: Proc. of 13th Int. Teletraffic Congress, pp. 627–632 (1991)Google Scholar
  18. 18.
    Ma, Y., Ro, C.W., Trivedi, K.S.: Performability analysis of channel allocation with channel recovery strategy in cellular networks. In: Proc. of IEEE 1998 (ICUPC 1998), Florence, Italy, October 5-9, pp. 71–75 (1998)Google Scholar
  19. 19.
    Nielsen, T.T., Wigard, J.: Performance enhancements in a frequency hopping GSM network. Kluwer Academic Publishers (2000)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Idriss-Ismael Aouled
    • 1
    • 2
  • Hind Castel-Taleb
    • 1
  1. 1.INSTITUT TELECOMTelecom SudParis/SAMOVAREvry CedexFrance
  2. 2.LACLUniversité Paris-EstCréteil CedexFrance

Personalised recommendations