We show in this paper that the computation of the distribution of the sojourn time of an arbitrary customer in a M/M/1 with the processor sharing discipline (abbreviated to M/M/1 PS queue) can be formulated as a spectral problem for a self-adjoint operator. This approach allows us to improve the existing results for this queue in two directions. First, the orthogonal structure underlying the M/M/1 PS queue is revealed. Second, an integral representation of the distribution of the sojourn time of a customer entering the system while there are n customers in service is obtained.
机构:
Univ Twente, Dept Appl Math, Stochast Operat Res Grp, NL-7500 AE Enschede, NetherlandsKorea Univ, Dept Math, Telecommun Math Res Ctr, Seoul 136713, South Korea
Cheung, Sing-Kong
Kim, Bara
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Korea Univ, Dept Math, Telecommun Math Res Ctr, Seoul 136713, South KoreaKorea Univ, Dept Math, Telecommun Math Res Ctr, Seoul 136713, South Korea
Kim, Bara
Kim, Jeongsim
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Chungbuk Natl Univ, Dept Math Educ, Cheongju 361763, Chungbuk, South KoreaKorea Univ, Dept Math, Telecommun Math Res Ctr, Seoul 136713, South Korea