Results of forecasting the utilization efficiency of the radio-frequency spectrum in communications networks of mobile and fixed services

In the preceding paper we presented the results of applying a method of forecasting the utilization efficiency of the radio-frequency spectrum to mobile and fixed communications networks. These results illustrate the main features of the evolution of the electromagnetic environment in these networks, enable one to make a correct choice of the parameters of the radio station which affect the utilization efficiency of the radio-frequency spectrum, and also enable conclusions to be drawn on the advisability of the joint use of a common frequency band by several forms of radio stations. The method described in [1] enables one, using the initial data specified there, to determine the relationships Ni(t) = Ni(t)/Nir, namely, the ratios of the available radio stations at the instant of time t to the number of frequency requests received on a given form of radio station during a certain period of time (months or years), and pi(t) is the probability that the allocation of a frequency request to a radio station of the i-th form will be satisfied. By comparing the relationships Ni(t) and pi(t) for different parameters of the radio station one can draw conclusions on the change in the possibilities of allocating frequency channels for radio stations with different parameters and thereby draw conclusions on the effect of the parameters of the radio stations on the utilization efficiency of the radio-frequency spectrum in communications networks.