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Point-to-Point and Point-to-Group blocking probability in multi-service switching networks with BPP traffic

Głąbowski M.

Electronics and Telecommunications Quarterly

2007

Vol. 53, No 4

339-360

This paper presents three approximate calculation methods of occupancy distribution and blocking probability in switching networks which are offered multi-service traffic streams generated by Binomial (Engset) & Poisson (Erlang) & Pascal traffic sources. The proposed methods belong to the class of methods known as the effective availability methods. The basis of the proposed calculation algorithms is the occupancy distribution in interstage links as well as in the outgoing links (forming outgoing directions). These distributions are calculated with the help of the full-availability group model and the limited-availability group model. The results of analytical calculations of the blocking probabilities are compared with the simulation results of three-stage switching networks, and, therefore, the validity of the assumptions used in the model is proved.