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  • Research Article
  • Open Access

Adaptive Bandwidth Management and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks

EURASIP Journal on Wireless Communications and Networking20072007:034378

Received: 30 May 2007

Accepted: 18 September 2007

Published: 18 November 2007


The coexistence of different cellular networks in the same area necessitates joint radio resource management for enhanced QoS provisioning and efficient radio resource utilization. We propose adaptive bandwidth management and joint call admission control (JCAC) scheme for heterogeneous cellular networks. The objectives of the proposed adaptive JCAC scheme are to enhance average system utilization, guarantee QoS requirements of all accepted calls, and reduce new call blocking probability and handoff call dropping probability in heterogeneous wireless networks. We develop a Markov chain model for the adaptive JCAC scheme and derive new call blocking probability, handoff call dropping probability, and average system utilization. Performance of the proposed adaptive JCAC scheme is compared with that of nonadaptive JCAC scheme in the same heterogeneous wireless network. Results show an improvement in average system utilization of up to 20%. Results also show that connection-level QoS can be significantly improved by using the proposed adaptive JCAC scheme.


  • Markov Chain
  • Resource Management
  • Resource Utilization
  • Cellular Network
  • Chain Model


Authors’ Affiliations

Department of Electrical Engineering, University of Cape Town, Rondebosch, South Africa


  1. Tölli A, Hakalin P, Holma H: Performance evaluation of common radio resource management (CRRM). Proceedings of the IEEE International Conference on Communications (ICC '02), April-May 2002, New York, NY, USA 5: 3429-3433.View ArticleGoogle Scholar
  2. Pérez-Romero J, Sallent O, Agustí R, Díaz-Guerra MA: Radio Resource Management Strategies in UMTS. John Wiley & Sons, New York, NY, USA; 2005.View ArticleGoogle Scholar
  3. Agustí R, Sallent O, Pérez-Romero J, Giupponi L: A fuzzy-neural based approach for joint radio resource management in a beyond 3G framework. Proceedings of the 1st International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks (QSHINE '04), October 2004, Dallas, Tex, USA 216-224.View ArticleGoogle Scholar
  4. Rao RM, Comaniciu C, Lakshman TV, Poor HV: Call admission control in wireless multimedia networks. IEEE Signal Processing Magazine 2004,21(5):51-58. 10.1109/MSP.2004.1328088View ArticleGoogle Scholar
  5. Ahmed MH: Call admission control in wireless networks: a comprehensive survey. IEEE Communications Surveys & Tutorials 2005,7(1):49-68.View ArticleGoogle Scholar
  6. Karabudak D, Hung C-C, Bing B: A call admission control scheme using genetic algorithms. Proceedings of the ACM Symposium on Applied Computing (SAC '04), March 2004, Nicosia, Cyprus 1151-1158.Google Scholar
  7. Gelabert X, Pérez-Romero J, Sallent O, Agustí R: On the suitability of load balancing principles in heterogeneous wireless access networks. Proceedings of the Wireless Personal Multimedia Communications (WPMC '05), September 2005, Aalborg, DenmarkGoogle Scholar
  8. Pillekeit A, Derakhshan F, Jugl E, Mitschele-Thiel A: Force-based load balancing in co-located UMTS/GSM networks. Proceedings of the 60th IEEE Vehicular Technology Conference (VTC '04), September 2004, Los Angeles, Calif, USA 6: 4402-4406.Google Scholar
  9. Pérez-Romero J, Sallent O, Agustí R: Policy-based initial RAT selection algorithms in heterogeneous networks. Proceedings of the 7th IFIP International Conference on Mobile and Wireless Communications Networks (MWCN '05), September 2005, Marrakesh, MorrocoGoogle Scholar
  10. Holma H, Toskala A: WCDMA for UMTS. 2nd edition. John Wiley & Sons, New York, NY, USA; 2001.Google Scholar
  11. Pla V, Giménez-Guzmány JM, Martínez J, Casares-Giner V: Optimal admission control using handover prediction in mobile cellular networks. Proceedings of the 2nd International Working Conference on Performance Modelling and Evaluation of Heterogeneous Networks (HET-NETs '04), July 2004, Ilkley, West Yorkshire, UKGoogle Scholar
  12. Kesidis G, Walrand J, Chang C-S: Effective bandwidths for multiclass Markov fluids and other ATM sources. IEEE/ACM Transactions on Networking 1993,1(4):424-428. 10.1109/90.251894View ArticleGoogle Scholar
  13. Głąbowski M, Stasiak M, Wiśniewski A, Zwierzykowski P: Uplink blocking probability calculation for cellular systems with WCDMA radio interface, finite source population and differently loaded neighbouring cells. Proceedings of the 11th Asia-Pacific Conference on Communications (APCC '05), October 2005, Perth, Western Australia 138-142.Google Scholar
  14. Nasser N, Hassanein H: Dynamic threshold-based call admission framework for prioritized multimedia traffic in wireless cellular networks. Proceedings of the IEEE Global Telecommunications Conference (GLOBECOM '04), November-December 2004, Dallas, Tex, USA 2: 644-649.View ArticleGoogle Scholar
  15. Guo Y, Chaskar H: Class-based quality of service over air interfaces in 4G mobile networks. IEEE Communications Magazine 2002,40(3):132-137. 10.1109/35.989773View ArticleGoogle Scholar
  16. Chung S-P, Lee J-C: Performance analysis and overflowed traffic characterization in multiservice hierarchical wireless networks. IEEE Transactions on Wireless Communications 2005,4(3):904-918.View ArticleGoogle Scholar
  17. Houeto F, Pierre S: Characterization of jitter and admission control in multiservice networks. IEEE Communications Letters 2004,8(2):125-127. 10.1109/LCOMM.2004.823370View ArticleGoogle Scholar
  18. Wang J, Zeng Q-A, Agrawal DP: Performance analysis of a preemptive and priority reservation handoff scheme for integrated service-based wireless mobile networks. IEEE Transactions on Mobile Computing 2003,2(1):65-75. 10.1109/TMC.2003.1195152View ArticleGoogle Scholar
  19. Bo X, Chen Z: On call admission and performance evaluation for multiservice CDMA networks. ACM SIGMOBILE Mobile Computing and Communications Review 2004,8(1):98-108. 10.1145/980159.980171View ArticleGoogle Scholar
  20. Orlik PV, Rappaport SS: On the handoff arrival process in cellular communications. Wireless Networks 2001,7(2):147-157. 10.1023/A:1016685506058MATHView ArticleGoogle Scholar
  21. Bertsekas DP, Tsitsiklis JN: Introduction to Probability. Athena Scientific, Belmont, Mass, USA; 2002.Google Scholar


© O. E. Falowo and H. A. Chan. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.