Modelling and analysis of non-cooperative peer-assisted VoD streaming in managed networks

Gramatikov, Sasho; Jaureguizar, Fernando

doi:10.1007/s11042-015-2477-9

Cited by 4 publications

(5 citation statements)

References 27 publications

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“…of a P2P net work that provides simple expressions for the number of downloaders and seeders. Neither work considers video ser v ices, but have inspired recent work, e.g., (Ciullo et al, 2014;Romero et al, 2015;Gramatikov and Jaureguizar, 2016;Hwang et al, 2016;Sasabe, 2018;Baez-Esquivel et al, 2013;Torres-Cruz et al, 2017) discussed in the following. Ciullo et al (2014) propose a modeling framework to compute the required server bandwidth that prevents playback interruptions (i.e., stalling events) in a hybrid network.…”

Section: Related Workmentioning

confidence: 99%

“…The description of such a process is one of our main contributions. Gramatikov and Jaureguizar (2016) also analyze a P2P network assisted by servers. The authors mode!…”

Section: Related Workmentioning

confidence: 99%

“…Many works have analyzed VoD systems but, in general, have not com prehensively modeled ail the above enlisted factors (Ciullo et al, 2014;Romero et al, 2015;Gramatikov and Jaureguizar, 2016;Hwang et al, 2016;Sasabe, 2018;Baez-Esquivel et al, 2013;Torres-Cruz et al, 2017;Torres-Cruz et al, 2018;Tian et al, 2015;Cong and Shuang, 2015;Zhao et al, 2015;Saengarunwong and Sanguankotchakom, 2018). Sorne of these works propose schemes to improve the system performance, but do not develop analytical tools (Cong and Shuang, 2015;Zhao et al, 2015).…”

mentioning

confidence: 99%

“…Sorne of these works propose schemes to improve the system performance, but do not develop analytical tools (Cong and Shuang, 2015;Zhao et al, 2015). Sorne others do propose analytical models, but are restricted to pure P2P networks (Hwang et al, 2016;Baez-Esquivel et al, 2013;Torres-Cruz et al, 2018) or, despite analyzing hybrid networks, do not consider ail the elements involved in this kind of systems (Ciullo et al, 2014;Romero et al, 2015;Gramatikov and Jaureguizar, 2016;Tor res-Cruz et al, 2017). In Section 2, we provide a more detailed descrip tion of the restrictions of these works.…”

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confidence: 99%

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A comprehensive analytical framework for VoD services in hybrid CDN-P2P systems

Torres-Cruz

Rivero-Ángeles

Rubino

et al. 2020

Journal of Network and Computer Applications

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Video on Demand services generate the Jargest amount of traffic in networks nowadays. Previous works have proposed integrating Content Delivery Networks (CON) and Peer-to-Peer (P2P) networks to satisfy this demand. However, their analytical methods do not consider al) the factors that affect the performance of these systems. Hence, we present a nove) comprehensive framework, based on a fluid mode), to evaluate VoD services over hybrid CDN-P2P systems. The proposed framework considers features of the service (e.g., size, coding-rate and popularity of the video), network attributes (e.g., upload data-rate capacity of servers and peers) and char acteristics of the behavior of the users (e.g., sojourn time, cooperativeness and frequency of random-seeks). Our framework allows a system to be evaluated under a wide variety of scenarios in terms of network-cost and Quality-of-Service (QoS) parameters and is flexible enough to mode) different resource allocation schemes, including a nove! scheme to distribute the upload network capacity. Despite the wide variety of considered factors, our framework is tractable and as accurate as discrete-models based on Markov chains.

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Section: Related Workmentioning

confidence: 99%

“…The description of such a process is one of our main contributions. Gramatikov and Jaureguizar (2016) also analyze a P2P network assisted by servers. The authors mode!…”

Section: Related Workmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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A comprehensive analytical framework for VoD services in hybrid CDN-P2P systems

Torres-Cruz

Rivero-Ángeles

Rubino

et al. 2020

Journal of Network and Computer Applications

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“…This system for peer-assisted streaming of VoD contents focuses on the distribution schemes of the contents, putting an accent on the not popular contents (Gramatikov et al, 2012a) and the cost reduction that is achieved by storing these contents in the peers (Gramatikov et al, 2012b). In order to facilitate the analysis of the influence of various network parameters, including the distribution schemes of the contents on the peers, this work proposes mathematical models of both cooperative (Gramatikov et al, 2013) and non-cooperative (Gramatikov & Jaureguizar, 2014) streaming. Besides, the work proposes numerical methods that considerably accelerate the computation of the results, making these models applicable and useful tools for estimating the performance of the system under given conditions.…”

Section: Epiloguementioning

confidence: 99%

Architectures for Video-on-Demand content distribution in managed networks

Gramatikov¹

Self Cite

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The demand of video contents has rapidly increased in the past years as a result of the wide deployment of IPTV and the variety of services offered by the network operators. One of the services that has especially become attractive to the customers is real-time Video on Demand (VoD) because it offers an immediate streaming of a large variety of video contents.The price that the operators have to pay for this convenience is the increased traffic in the networks, which are becoming more congested due to the higher demand for VoD contents and the increased quality of the videos. Therefore, one of the main objectives of this thesis is finding solutions that would reduce the traffic in the core of the network, keeping the quality of service on satisfactory level and reducing the traffic cost.The thesis proposes a system of hierarchical structure of streaming servers that runs an algorithm for optimal placement of the contents according to the users' behavior and the state of the network. Since any algorithm for optimal content distribution reaches a limit upon which no further improvements can be made, including service customers themselves (the peers) in the streaming process can further reduce the network traffic. This process is achieved by taking advantage of the control that the operator has in the privately managed networks over the Set-Top Boxes placed at the clients' premises. The operator reserves certain storage and streaming capacity on the peers to store the video contents and to stream them to the other clients in order to alleviate the streaming servers.Because of the inability of the peers to completely substitute the streaming servers, the thesis proposes a system for peer-assisted streaming. Some of the important questions addressed in the thesis are how the system parameters and the various distributions of the video contents on the peers would impact the overall system performance. In order to give answers to these questions, the thesis proposes a precise and flexible stochastic model that takes into consideration parameters like uplink and storage capacity of the peers, number of peers, size of the video content library, size of contents and content distribution scheme to estimate the benefits of the peer-assisted streaming. The work also proposes an extended version of the mathematical model by including the failure probability of the peers and their recovery time in the set of parameters. These models are used as tools for conducting thorough analyses of the peer-assisted system for VoD streaming for the wide range of defined parameters.

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