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Analytical Modeling of a Time-Threshold Based Multi-guard Bandwidth Allocation Scheme for Cellular Networks

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2 Author(s)
Idil Candan ; Comput. Eng. Dept., Middle East Tech. Univ., Mersin ; Muhammed Salamah

In this paper, the analytical modeling of a time-threshold based multi-guard bandwidth allocation scheme is presented using a two-dimensional Markov chain. The main idea of the scheme is based on monitoring the elapsed real time of handoff calls and according to a time threshold (te), a handoff call is either slightly-prioritized or fully-prioritized. A slightly-prioritized handoff call has higher priority than a new call and lower priority than a fully-prioritized handoff call. Also in this paper, the numerical results obtained from two dimensional Markov chain analysis are compared with the numerical results which are obtained using one-dimensional Markov chain analysis and simulation ones. The simulation and analytical results agree well. The performances of different bandwidth allocation schemes are measured using a crucial general performance metric Z. Z, which is a performance/cost ratio, is a function of the new call blocking probability, handoff call dropping probability and system utilization all together. The results indicate that our scheme outperforms other traditional schemes.

Published in:

Telecommunications, 2009. AICT '09. Fifth Advanced International Conference on

Date of Conference:

24-28 May 2009