DOI: 10.17586/2226-1494-2016-16-6-1084-1090


AUTOMATING SELECTION OF OPTIMAL PACKET SCHEDULING DURING VOIP-TRAFFIC TRANSMISSION

Y. A. Balakshina, V. V. Sosnin


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Article in Russian

For citation: Balakshina Yu.A., Sosnin V.V. Automating selection of optimal packet scheduling during VoIP-traffic transmission. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2016, vol. 16, no. 6, pp. 1084–1090. doi: 10.17586/2226-1494-2016-16-6-1084-1090

Abstract

The usage of various packet scheduling disciplines in computer networking devices as a mechanism to ensure the quality of service is described. Stages for selection of necessary parameters values of packet scheduling during VoIP-traffic transmission in computer networks are defined. VoIP-traffic was set as a research object because there are strict requirements of VoIP-applications to the network transmission parameters. With the aid of training and experimental simulation system the numerous experiments for parameters selection of the most common packet scheduling disciplines were carried out (FIFO, WFQ, non-preemptive priority queueing). The example that illustrates the ability to adjust the weighting coefficients of WFQ packet scheduling discipline is presented. Approximate analytical dependences are obtained and they will significantly reduce system administrators’ efforts to assess and modify the parameters of packet scheduling in network devices. A method of automating selection of the optimal packet scheduling discipline is formulated.


Keywords: traffic transmission, VoIP-traffic, packet scheduling, traffic intensity, WFQ, weighted fair queueing, simulation modeling

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