Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31100
Decentralized Handoff for Microcellular Mobile Communication System using Fuzzy Logic

Authors: G. M. Mir, N. A. Shah, Moinuddin


Efficient handoff algorithms are a cost-effective way of enhancing the capacity and QoS of cellular system. The higher value of hysteresis effectively prevents unnecessary handoffs but causes undesired cell dragging. This undesired cell dragging causes interference or could lead to dropped calls in microcellular environment. The problems are further exacerbated by the corner effect phenomenon which causes the signal level to drop by 20-30 dB in 10-20 meters. Thus, in order to maintain reliable communication in a microcellular system new and better handoff algorithms must be developed. A fuzzy based handoff algorithm is proposed in this paper as a solution to this problem. Handoff on the basis of ratio of slopes of normal signal loss to the actual signal loss is presented. The fuzzy based solution is supported by comparing its results with the results obtained in analytical solution.

Keywords: Fuzzy Logic, corner effect, handoff, Slope ratio

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1265


[1] Nasif Ekiz, Tara Salih, Sibel and Kermal Fidanboylu "An Overview of Handoff Techniques in Cellular networks" International Journal of Information Technology Volume 2 number 3, 2005, pp 132-136.
[2] S.H. Wie, J.S. Jang, B.C. Shin, and D.H. Cho, "Handoff Analysis of the Hierarchical Cellular System," IEEE Trans. Vehicular Technology, vol. 49, pp. 2027-2036, Sept. 2000.
[3] B. Li, C.K. Wu, and A. Fukuda, "Performance Analysis of Flexible Hierarchical Cellular Systems with a Bandwidth Efficient Handoff Scheme," IEEE Trans. Vehicular Technology, vol. 50, pp. 971-980, July 2001.
[4] Y. Kinoshita, T. Itoh, "Performance analysis of a fuzzy handoff algorithm by an indoor propagation simulator" proc IEEE, Vehicular Technology Aug. 1993, pp 241-245.
[5] D. Muaoz-Rodiguez, K. Cattermole, "Handoff procedure for defined radio cells, proc. IEEE, Vehicular Technology 1987, pp 38-44.
[6] George Edwards, Ravi Sankar "Microcellular Handoff using Fuzzy Techniques" Wireless Networks 4(1998), pp 401-409.
[7] Junyi Li, Ness. B. Shroff, Edvin K. P Chong "Channel Carrying: A Noval Handoff Scheme for Mobile Cellular Networks" IEEE/ACM Transactions on Networking, Vol 7, No. 1, Feb. 1999.
[8] J. J. Astrain, J. Villadangos, M. Castilo, J. R. Garitagoitin, F. Farina "Mobility Management in Cellular Communication Systems Using Fuzzy Systems" International Federation for Information Processing, 2004, pp 79-91
[9] Jörg Habetha and Bernhard Walke "Fuzzy Rule-Based Mobility and Load Management for Self- Organizing Wireless Networks" International Journal of Wireless Information Networks, Vol. 9, No. 2, April 2002
[10] M. Sugeno, Y. Kasukawa, "A Fuzzy-based Approach to Qualitative Modeling," IEEE Transactions on Fuzzy Systems 1(1) February 1993, pp 7.