Modeling of Video on Demand Systems

Hanczewski, Sławomir; Stasiak, Maciej

doi:10.1007/978-3-319-07941-7_24

Cited by 5 publications

(2 citation statements)

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“…Stasiak [62] proposed an approximation method extending EIF to the case with multichannel traffic streams, where each request type may have its own service rate and seize multiple servers from the same group simultaneously. In [20] and [63], EIF-derived approximations were applied to blocking probability evaluation of video-on-demand systems; in particular, [63] considered the case where different videos have different availabilities. The technique was further extended in [64], [65] to support BPP (Binomial-Poisson-Pascal) arrival traffic.…”

Section: Erlang's Interconnection Formula and Extensionsmentioning

confidence: 99%

A Century-Long Challenge in Teletraffic Theory: Blocking Probability Evaluation for Overflow Loss Systems With Mutual Overflow

Wong

Chan

2023

IEEE Access

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In this review, we describe historical and recent developments towards tackling a centurylong challenge in teletraffic theory, namely the evaluation of blocking probability in overflow systems with mutual overflow. Such systems have many applications in a variety of telecommunications and service systems, including wireless communications, cloud computing, intensive care, and emergency services, and various methods have been developed over the past century to address this challenge. In particular, the recent development of the Information Exchange Surrogate Approximation (IESA) (Wong et al., Sep. 2013; provides significantly increased accuracy and robustness compared to previous approximation methods of its kind while also providing high computational efficiency not available via simulation or exact analysis. To the best of our knowledge, IESA is the first analytical method to combine high levels of accuracy, robustness, and computational efficiency when evaluating blocking probability in overflow systems with mutual overflow, and thus forms a major breakthrough in this century-long effort.

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Section: Erlang's Interconnection Formula and Extensionsmentioning

confidence: 99%

A Century-Long Challenge in Teletraffic Theory: Blocking Probability Evaluation for Overflow Loss Systems With Mutual Overflow

Wong

Chan

2023

IEEE Access

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“…Until the 1980s, non-full-availability groups with single-service traffic were used in electromechanical switching nodes of telecommunications networks. With the advent of electronic nodes, groups of this type ceased to be used in their direct form, though they were, and still are, used in analytical models of more complex systems, such as, for example, single-and multiservice switching networks [16][17][18], network systems with reservation [19,20], systems with traffic overflow [21][22][23], video on demand (VoD) systems [24,25], or radio and Iub interfaces of the UMTS system [26][27][28]. One of the most extensive elaborations on non-full-availability groups is provided in the [29].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the access part of a multi-service mobile network with service priorities

Hanczewski

Stasiak

Zwierzykowski

2015

J Wireless Com Network

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This paper presents a methodology for the modelling and optimization of multi-service radio access for universal mobile telecommunications system (UMTS) networks. The paper provides a description of the basis for modelling of a tandem pair: a wideband code division multiple access (WCDMA) interface and a Iub interface. The models involved in the study take into consideration a possibility of setting priorities to a number of selected traffic classes. Particular attention is given to the development of simple computational algorithms that would make it possible to determine the blocking probability for call streams with different priorities. The results of the analytical calculations are then compared with the results of simulation experiments, which confirms the high accuracy of the proposed analytical solutions.

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