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Analysis and modeling of traffic on a hybrid fiber-coax network

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4 Author(s)
M. Garcia ; Dept. Comput. Sci., Univ. of Oviedo, Gijon, Spain ; D. F. Garcia ; V. G. Garcia ; R. Bonis

This paper presents the study carried out on the data traffic collected on the network of a cable operator based on hybrid fiber-coax technology, and the subsequent simulation model developed to predict the bandwidth requirements of the network channels. The paper starts with the analysis of the traffic measurements, taken over two periods of time in one year, on all the network's channels. This analysis identifies the main characteristics of the traffic, as well as some relationships between network parameters and their persistence over time. The paper proceeds to present the development of a simulation model, which represents the cable network. This model is built from the results of the traffic analysis and network parameters. The major challenge of this model is to predict the traffic on each channel of the cable network, related to parameters of the network configuration, such as the number of assigned subscribers to the channel and the time of day. To reach this goal, the simulation model has been developed with a modular structure, which gives it flexibility to adapt to changes in the network. The process followed involves the establishment of a traffic model, a system model, and finally, the validation of the results.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:22 ,  Issue: 9 )