The pass-through capacity redevelopment method of net critical section based on improvement ON/OFF models of traffic
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Abstract
Relevance. The main disadvantage of the existing traffic models of the critical network section is that it does not take into account the fact that during the periods of activity of each separate traffic source, packets are transmitted by groups. Also, the characteristics of wireless networks are not usually taken into account. The purpose of the article is to develop the method for re-distributing the bandwidth of the critical network segment based on the improvement of the ON/OFF model of the traffic for use in wireless networks. The methods used in the studies: queuing analysis methods, fractal analysis, statistical data processing. Results. The classic ON/OFF model of traffic is considered in the article, the disadvantages of this model were discovered when applying it for a wireless data transmission network. An extended ON/OFF traffic model was proposed, which corrects the shortcomings of the existing one, conditions were found in which the improved model would work most rationally. A method was proposed for redistributing the bandwidth of the critical section of the wireless data network based on the improved extended ON / OFF model of traffic at the entrance of this section, in which, unlike analogues, the distribution point between the service and information traffic ensures a proportional distribution of the bandwidth. This makes it possible to reduce the number of iterations of the point of division search based on the loss of packets and to provide an increase in the proportion of bandwidth provided for the transmission of user traffic information. Conclusions. To reduce the time of data transfer in conditions of limited bandwidth of critical sections of the wireless data network, it is most rational to use methods based on the use of fractal traffic properties, allowing short-term forecasting of its intensity. The proposed version of the extended ON / OFF model of traffic will allow performing a short-term forecast of its intensity. The proposed method of bandwidth redistribution allows to increase the share of bandwidth provided for the transmission of information traffic to the user.
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References
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