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Multiserver Queue with Guard Channel for Priority and Retrial Customers

Kazuki Kajiwara & Tuan Phung-Duc

International Journal of Stochastic Analysis2016https://doi.org/10.1155/2016/7168359article
ABDC B
Weight
0.49

Abstract

This paper considers a retrial queueing model where a group of guard channels is reserved for priority and retrial customers. Priority and normal customers arrive at the system according to two distinct Poisson processes. Priority customers are accepted if there is an idle channel upon arrival while normal customers are accepted if and only if the number of idle channels is larger than the number of guard channels. Blocked customers (priority or normal) join a virtual orbit and repeat their attempts in a later time. Customers from the orbit (retrial customers) are accepted if there is an idle channel available upon arrival. We formulate the queueing system using a level dependent quasi-birth-and-death (QBD) process. We obtain a Taylor series expansion for the nonzero elements of the rate matrices of the level dependent QBD process. Using the expansion results, we obtain an asymptotic upper bound for the joint stationary distribution of the number of busy channels and that of customers in the orbit. Furthermore, we develop an efficient numerical algorithm to calculate the joint stationary distribution.

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https://doi.org/https://doi.org/10.1155/2016/7168359

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@article{kazuki2016,
  title        = {{Multiserver Queue with Guard Channel for Priority and Retrial Customers}},
  author       = {Kazuki Kajiwara & Tuan Phung-Duc},
  journal      = {International Journal of Stochastic Analysis},
  year         = {2016},
  doi          = {https://doi.org/https://doi.org/10.1155/2016/7168359},
}

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Multiserver Queue with Guard Channel for Priority and Retrial Customers

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Evidence weight

0.49

Balanced mode · F 0.40 / M 0.15 / V 0.05 / R 0.40

F · citation impact0.37 × 0.4 = 0.15
M · momentum0.80 × 0.15 = 0.12
V · venue signal0.50 × 0.05 = 0.03
R · text relevance †0.50 × 0.4 = 0.20

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