Unified Performance and Availability Model for Call Admission Control in Heterogeneous Wireless Networks


The system capacity of wireless networks varies temporally. This may be due to the dynamic allocation of the channels and also the mobility of the users. The change in capacity will create greater impact on the system performance parameters. This variation of capacity particularly poses a greater challenge to the research community to ensure the Quality of Service (QoS) as it affects the call blocking probability which is one of the important QoS parameters. This paper proposes a performance model for call admission control and the availability model for a heterogeneous wireless network environment. The proposed model is able to handle three types of traffic considered for the study includes conversation traffic, interactive traffic and background traffic. The unified performance-availability model is developed using the Stochastic Area Networks (SAN). The performance of both analytical models and the SAN based performance-capacity models are verified by taking the call blocking probabilities for all the three types of traffics.

Share and Cite:

R. Babu H. Siddamallaiah, G. Subramanian and P. S. Satyanarayana, "Unified Performance and Availability Model for Call Admission Control in Heterogeneous Wireless Networks," International Journal of Communications, Network and System Sciences, Vol. 3 No. 4, 2010, pp. 406-412. doi: 10.4236/ijcns.2010.34052.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Sanmateu, et al. “Seamless Mobility across IP Networks Using Mobile IP,” International Journal of Computers and Telecommunications Networking, Vol. 40, September 2002, pp. 181-190.
[2] G. Wu, et al. “MIRAI Architecture for Heterogeneous Networks,” IEEE Communications, Vol. 40, No. 2, 2002, pp. 126-134.
[3] S. Y. Hui and K. H. Yeung, “Challenges in the Migration to 4G Mobile Systems,” IEEE Communications, Vol. 41, No. 12, 2003, pp. 54-59.
[4] X. G. Wang, J. E. Mellor and G. Min, “A QoS-Based Bandwidth Management Scheme in Heterogeneous Wireless Networks,” International Journal of Simulation Systems, Science and Technology, Vol. 5, No. 1-2, 2004, pp. 9-17.
[5] E. Vanem, S. Svaet and F. Paint, “Effects of Multiple Access Alternatives in Heterogeneous Wireless Networks,” IEEE Wireless and Networking, Vol. 3, 2003, pp. 1696-1700.
[6] K. Murray, R. Mathur and D. Pesch, “Network Access and Handover Control in Heterogeneous Wireless Networks for Smart Space Environments,” First International Workshop on Management of Ubiquitous Communications and Services, MUCS ,Waterford, Ireland, December 11, 2003.
[7] Gowrishankar, H. S. R. Babu, G. T. Raju and P. S. Satyanarayana, “Performability Model of Vertical Handoff in Wireless Data Networks,” 4th IEEE International Conference on Wireless and Mobile Communication (ICW- MC2008), Athens, Greece, 27 July-1 August 2008, pp. 309-314.
[8] K. S. Trevedi, “Probability and Statistics with Reliability, Queuing and Computer Science Application,” 2nd Edition, John Wiley and Sons, New York, 2001.
[9] Mulgrw, “Applying Radial Basis Functions,” IEEE Signal Processing Magazine, Vol. 13, No. 2, 1996, pp. 50-65.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.