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Home  >  Volume 26 (March 2014)

50. Comparative Study of Blocking Probability used in Mobile Communication Networks by Osahenvemwen, O.A. and Odiase, O. F. Volume26, (March, 2014), pp375 – 378.
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This paper presents the comparative study of blocking probability used in mobile communication networks. It is focused at determine the relationship  between the conventional Erlang B blocking probability traffic model and developed blocking probability traffic model, called  the Austin J traffic model. Data were obtained from Globacom limited (mobile communication network) in Nigeria, for two years, 1st March 2010 to 29th February 2012 duration. The obtained set of traffic data, were used to validate the investigated blocking probability traffic models and also, it was simulated using MATLAB (version 7.6.3. 325) program. Statistical tools were deployed, such as correlation coefficient and coefficient of determination used to compared the developed blocking probability traffic model with conventional Erlang B blocking probability traffic model. The Erlang B blocking probability is assumed to be the observed values denoted as x; While Austin J (developed) blocking probability is denoted as y, also called the predicted values. The obtained mean value from the conventional Erlang B is 0.018 and while, Austin J traffic model is 0.019 respectively. The correlation coefficient value obtained is 0.999954, this value imply that there is a strong relationship between Erlang B blocking probability traffic model and developed (Austin J) blocking probability traffic model. Also, the coefficient of determination value obtained is 0.999908. This coefficient of determination value had shown the degree of variation between the blocking probability traffic models respectively.

Keywords: Traffic model, correlation coefficient, coefficient of determination, relationship and variation