Enhanced streaming services in a content distribution network

Cranor, Charles D.; Green, M.; Kalmanek, Charles; Shur, David; Sibal, Sandeep; Merwe, Jacobus E. van der; Sreenan, Cormac J.

doi:10.1109/4236.939452

Cited by 70 publications

(39 citation statements)

References 8 publications

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“…We compare the performance of our P2P assignment metaheuristic with a traditional Content Delivery Network (CDN) [2] based implementation. Two important variables have to be considered in the analysis: the global perceived quality of the network, and the total bandwidth consumption (at the broadcaster and at the peers).…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

A robust P2P streaming architecture and its application to a high quality live-video service

Cancela

Amoza

Rodrı́guez-Bocca

et al. 2008

Electronic Notes in Discrete Mathematics

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This paper explores the design of a P2P architecture that sends real-time video over the Internet. The aim is to provide good quality levels in a highly dynamic P2P topology, where the frequent connections/disconnections of the nodes makes it difficult to offer the Quality-of-Experience (QoE) needed by the client.We study a multi-source streaming approach where the stream is decomposed into several flows sent by different peers to each client including some level of redundancy, in order to cope with the fluctuations in network connectivity. We employ the recently proposed PSQA technology for evaluating automatically the perceived quality at the client side. We introduce a mathematical programming model to maximize the global expected QoE of the network (evaluated using PSQA), selecting a P2P connection scheme which enhances topology robustness. In addition, we provide an approximated algorithm to solve the proposed model, and we apply it to solve a case study based on real life data.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

A robust P2P streaming architecture and its application to a high quality live-video service

Cancela

Amoza

Rodrı́guez-Bocca

et al. 2008

Electronic Notes in Discrete Mathematics

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“…Our application layer scheme does not assume any of these specific capabilities for the underlying infrastructure of the DCMS network rather than point-to-point communication between adjacent nodes. A hybrid system in which both normal unicast and multicast communications can be used for object location was recently introduced by Cranor et al [56].…”

Section: Related Workmentioning

confidence: 99%

Decentralized resource management for a distributed continuous media server

Shahabi¹,

Banaei-Kashani²

2002

IEEE Trans. Parallel Distrib. Syst.

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AbstractÐDistributed continuous media server (DCMS) architectures are proposed to minimize the communication-storage cost for those continuous media applications that serve a large number of geographically distributed clients. Typically, a DCMS is designed as a pure hierarchy (tree) of centralized continuous media servers. In an earlier work, we proposed a redundant hierarchical topology for DCMS networks, termed RedHi, which can potentially result in higher utilization and better reliability over pure hierarchy. In this paper, we focus on the design of a resource management system for RedHi that can exploit the resources of its DCMS network to achieve these performance objectives. Our proposed resource management system is based on a fully decentralized approach to achieve optimal scalability and robustness. In general, the major drawback of a fully decentralized design is the increase in latency time and communication overhead to locate the requested object. However, as compared to the typically long duration and high resource/ bandwidth requirements of continuous media objects, the extra latency and overhead of a decentralized resource management approach become negligible. Moreover, our resource management system collapses three management tasks, 1) object location, 2) path selection, and 3) resource reservation, into one fully decentralized object delivery mechanism, reducing the latency even further. In sum, decentralization of the resource management satisfies our scalability and robustness objectives, whereas collapsing the management tasks helps alleviate the latency and overhead constraints. To achieve a high resource utilization, the object delivery scheme uses our proposed cost function, as well as various object location and resource reservation policies to select and allocate the best streaming path to serve each request. The object delivery scheme is designed as an application layer resource management middleware for the DCMS architecture to be independent of the underlying telecommunication infrastructure. Our experiments show that our resource management system is successful in realization of the higher resource utilization for the DCMS networks with the RedHi topology.Index TermsÐDistributed continuous media servers, decentralized resource management, distributed multimedia systems, content delivery networks, distributed information systems, video-on-demand.

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“…Let us call A the requesting peer and B the requested one. In the first step, A examines its buffer at position π (1). If the chunk is missing and B has it, the download is performed.…”

Section: A New Family Of Strategiesmentioning

confidence: 99%

“…The majority of them have a traditional CDN (Content Delivery Network) structure [1], [2], where a set of datacenters absorbs all the load, that is, concentrates the task of distributing the content to the customers. This is, for instance, the case of msnTV, YouTube, Jumptv, etc., all working with video content.…”

Section: Introductionmentioning

confidence: 99%

A COP for cooperation in a P2P streaming protocol

Bertinat

Padula

Amoza

et al. 2009

2009 International Conference on Ultra Modern Telecommunications &Amp; Workshops

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Abstract-This paper introduces a Combinatory Optimization Problem (COP) which captures the performance in cooperation of a P2P Streaming Network, considered at the buffer level. A new family of strategies of cooperation is defined, which represents the order of query of pieces in a communication between peers. We define a measure of quality for each strategy, based on the most shocking video streaming parameters, namely the continuity and the start-up latency. Our aim is o find quasi-optimal strategies inside the proposed family, by means of on a model based on an Asymmetric Traveling Salesman Problem (ATSP). Finally, we solve this ATSP using an ACO (Ant Colony Optimization)-based algorithm. The results show substantial improvement with this approach, once compared with the ones obtained by previous defined strategies of cooperation.

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Enhanced streaming services in a content distribution network

Cited by 70 publications

References 8 publications

A robust P2P streaming architecture and its application to a high quality live-video service

A robust P2P streaming architecture and its application to a high quality live-video service

Decentralized resource management for a distributed continuous media server

A COP for cooperation in a P2P streaming protocol

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