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A Hybrid Joint Call Admission Control Algorithm for Next Generation Network to Enhance Connection Level QOS

J. Pradeep, R. Nakkeeran


Next Generation Wireless Networks (NGWN) necessitates joint radio resource management to enhance QoS provisioning and efficient radio resource utilization. The objectives of the Joint Call Admission Control (JCAC) algorithm are to uniformly distribute the traffic load among the available Radio Access Technologies (RATs), to provide priority to handoff calls and hence to enhance connection-level QoS. The study of network has been done separately using load based and service based approaches for selecting the most appropriate radio access technologies and compared. An algorithm is proposed, hybrid JCAC, to overcome the limitations of load and service based JCAC by combining them. It manages load and service conditions efficiently. The numerical results obtained show that overall call dropping probability in heterogeneous network is reduced significantly.


Call Admission Control, Radio Access Technology, Radio Resources, Call Dropping, Call Blocking, QoS, Markov Chain.

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M. H. Ahmed, "Call admission control in wireless networks: a comprehensive survey," IEEE Communications Surveys & Tutorials,vol. 7, no. 1, pp. 49-68, 2005.

J.Perez Romero, O.Sallent, and R. Agusti, “Policy-based initial RAT selection algorithms in heterogeneous networks,” in Proceedings of the 7th IFIP International Conference on Mobile and Wireless Communications Networks MWCN’05),Marrakesh, Morroco,Sep.2005.

G. Wu, M. Mizuno, and P.J.M. Having a, “MIRAI architecture for heterogeneous network,” IEEE Communications Magazine, vol.40, no.2,pp. 126-134. Feb. 2002.

J. Perez-Romero, O.Sallent, R.Agusti, and m.a.dıaz-Guerra, Radio Resource Management Strategies in UMTS, John Wiley & Sons, NewYork, NY, USA, 2005.

A. Tolli, P. Hakalin, and H. Holma, “Performance evaluation of common radio resource management (CRRM),” in Proceedings of the IEEE International Conference on Communications (ICC’02), vol. 5, pp.3429–3433, New York, NY, USA, May 2002.

O.E Falowo and H. Anthony Chan, “Joint call admission control algorithms: Requirements, Approaches, and design consideration,”computer Communications, vol.31, Oct 22-29, pp. 1200–1217. Sep.2007.

R.B. Ali, S. Pierre, “An efficient predictive admission control policy for heterogeneous wireless bandwidth allocation in next generation mobile networks,” in Proceedings of International Conference on Communications and Mobile Computing (IWCMC’06), Vancouver,Canada, pp.3–6, July 2006

X.Gelabert, J.Perez Romero, O.Sallent, and R.Agusti, “On the suitability of load balancing principles in heterogeneous wireless access networks,” in Proceedings of the Wireless Personal Multimedia Communication(WPMC ’05), Aalborg, Denmark, Sep.2005.

A.Pillekeit, F.Derakhshan, E.Jugl, and A .Mitschele Thiel, “Force-based load balancing in co-located UMTS/GSM networks,” in Proceedings of the 60th IEEE Vehicular Technology Conference (VTC ’04), vol. 6, pp.4402–4406, Los Angeles, Calif, USA, Sep.2004.

J. Wang, Q.-A. Zeng, and D. P. Agrawal, “Performance analysis of a preemptive and priority reservation hando scheme for integrated service-based wireless mobile networks,” IEEE Transactions on Mobile Computing, vol. 2, no. 1, pp. 65–75, 2003

I. Katzela and M. Naghshineh, “Channel assignment schemes for cellular mobile telecommunication systems: A comprehensive survey,” IEEE Personal Communications., vol. 3, pp. 10–31, June 1996.

N. Nasser and H. Hassan in, “Dynamic threshold-based call admission framework for prioritized multimedia trac in wireless cellular networks,” in Proceedings of the IEEE Global Telecommunications Conference (GLOBECOM ’04), vol. 2, pp.644–649, Dallas, Tex, USA,Dec 2004.

Y. Guo and H. Chaskar, “Class-based quality of service over air interfaces in 4G mobile networks,” IEEE Communications Magazine, vol. 40, no. 3,pp. 132–137, 2002.

S.P. Chung and J.C. Lee, “Performance analysis and over flowed traffic characterization in multiservice hierarchical wireless networks,” IEEE Transactions on Wireless Communications, vol. 4, no. 3, pp. 904–918,2005.

O.E Falowo and H. Anthony Chan, “Adaptive Bandwidth Management and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks," EURASIP Journal on Wireless Communications and Networking, Sep.2007.


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