volume | PIER Journals

Abstract

Wideband code division multiple access (WCDMA) is an interference-limited system. When the system operates at nearly full capacity, admitting another user may affect the stability of the system. Therefore, proper Call Admission Control (CAC) is crucial and should balance between Quality of Service (QoS) requirements for the new user and also for the existing users and at the same time keep the accepted traffic as high as possible. In this paper, we investigate this tradeoff in the uplink direction using power-based Multi-Cell Admission Control (MC-AC) algorithm. Multimedia services are considered with different QoS requirements. Different traffic scenarios are considered. Simulation results reveal that MC-AC algorithms have many advantages over single cell admission control in terms of overall stability of the system and total system throughput.

1. Anderson, M., Z. Rosberg, and J. Zander, "Soft and save admission control in cellular networks," IEEE/ACM Trans. Networking, Vol. 5, 255-265, 1997.
doi:10.1109/90.588096

2. Kim, D., "Efficient interactive call admission control in power-controlled mobile systems," IEEE Trans. Veh. Technol., Vol. 49, 1017-1028, 2000.
doi:10.1109/25.845118

3. Huang, C. Y. and R. D. Yates, "Call admission in power controlled CDMA systems," Proc. IEEE Veh. Technol. Conf., Atlanta, GA, USA, May 1996.

4. Kuri, J. and P. Mermelstein, "Call admission on the uplink of a CDMAsystem based on total received power," Proc. of IEEE International Conf. on Commun., Vol. 3, 1431-1436, June 1999.

5. Holma, H. and J. Laakso, "Uplink admission control and soft capacity with MUD in CDMA," Proc. IEEE Veh. Technol. Conf., Amsterdam, the Netherlands, Sep. 1999.

6. Outes, J., L. Nielsen, K. Pedersen, and P. Mogensen, "Multi-cell admission control for UMTS," Proc. IEEE Veh. Technol. Conf., Rhodes, Greece, May 2001.

7. Fodor, G. and M. Lindstrom, "On multi-cell admission control in CDMAnet works," Int. J. Commun. Syst., Mar. 2007.

8. Foder, G. and M. Telek, "On the tradeoff between blocking and dropping probabilities in Multi-cell CDMANet works," J. of Communic., Vol. 2, No. 1, Jan. 2007.

9. Capone, A. and S. Redana, "Call admission control techniques for UMTS," Proc. 54th IEEE Veh. Technol. Conf., 2001.

10. Holma, H. and A. Toskala, WCDMA for UMTS: Radio Access for Third Generation Mobile Communications, John Wiley and Sons, Ltd., England, 2004.

11. Capone, A. and S. Redana, "Received power based call admission control techniques for UMTS uplink," Proc. of 56th IEEE Veh. Technol. Conf., 2002.

12. Ahmed, M. H. and H. Yanikomeroglu, "SINR threshold lower bound for SINR-based call admission control in CDMAnet works with imperfect power control," IEEE Communications Letters, Vol. 9, No. 4, April 2005.
doi:10.1109/LCOMM.2005.1413624

13. Lee, C. Y. and J. Jo, "Service specific call admission control in WCDMAsystem," Proc. 60th IEEE Veh. Technol. Conf., Vol. 2, 1033-1037, 2004.

14. Geyi, W., "Multi-antenna information theory," Progress In Electromagnetics Research, Vol. 75, 11-50, 2007.
doi:10.2528/PIER07052203

15. Tarhuni, N., M. Elmusrati, and T. Korhonen, "Multi-class optical-CDMAnet work using optical power control," Progress In Electromagnetics Research, Vol. 64, 279-292, 2006.
doi:10.2528/PIER06070701

16. Tu, T.-C. and C.-C. Chiu, "Path loss reduction in an urban area by genetic algorithms," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 3, 319-330, 2006.
doi:10.1163/156939306775701696

17. Panagopoulos, A. D. and G. E. Chatzarakis, "Outage performance of single/dual polarized fixed wireless access links in heavy rain climatic regions," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 3, 283-297, 2007.
doi:10.1163/156939307779367387

Dr. Sami El-Dolil

Dr. A. Al-Nahari

Dr. Moawad Desouky

Dr. Fathi Abd El-Samie