: ..
: N-
: 119
:
: 2026
: .. N- // . - 2026. - . 119. - .61-78.
: , , ,
(.): multiphase queueing system, Kolmogorov equations, transient mode, non-stationary characteristics of the queueing system
: . , , . . , MAPLE17, . , . , , . , , , , .
(.): This paper considers a multiphase queuing system with a shared finite-size buffer. For the first time, the general form of Kolmogorov's equations is found by using the functions introduced by the author, which allows for reducing the computation time for both non-stationary and stationary performance characteristics of multiphase systems of this type. The probability transformation matrix method previously developed by the author is applied to calculate these characteristics. The special case of the four-phase system with a shared limited buffer is considered too, and the program is developed by using the MAPLE-17 package that allows us to write Kolmogorov's differential equations in the analytical form for any buffer size. The paper also presents the results of the numerical experiment for the four-phase system with the buffer equal to one. It is shown that systems of this type can function efficiently even when the buffer size is smaller than the number of phases. The results of the numerical calculations of the state probabilities, loss probabilities, and probabilities of a request being in the buffer before servicing in the first, second, third, and fourth phases are presented.
PDF
: 37, : 11, : 7.