Model of functioning of the centralized wireless information ecosystem focused on multimedia streaming

Abstract

The article's highlight is the Markov model of functioning of the centralized wireless information ecosystem focused on multimedia streaming. The model describes the stochastic process of joint service by the base transmission station (BTS) of independent streams of multimedia transfer and text data transfer. To assess the effectiveness of the fulfilment of its purpose by the studied ecosystem, a metric of quality parameters is proposed, in particular: - the percentage of lost requests for multimedia transfer; - the percentage of lost requests for text data transfer; - the average share of the resource of the BTS communication channel involved in the service of multimedia transfers; - the average share of the BTS communication channel involved in the service of text data transfer; - the percentage of censored operating time of the studied system, when the incoming request for multimedia transfer was rejected due to lack of the required share of free resource of the communication channel; - the ratio of the number of lost multimedia transfer requests to the potential number of transfer sessions. The first four parameters are indicators of the reliability of the studied system, and the last two qualitative parameters have a direct economic interpretation. For the studied ecosystem to realize its purpose in conditions of moderate and high load, the model introduced a self-limiting function. This feature allows us to flexibly balance the servicing of transfer sessions of both types, balancing the values of the first two quality indicators. The adequacy of the proposed mathematical apparatus is proved empirically.