Understanding pollution dynamics in large-scale peer-to-peer IPTV system

Wang, Haizhou; Chen, Xingshu; Wang, Wenxian; Hao, Zheng-hong

doi:10.1007/s11771-012-1265-1

Cited by 5 publications

(39 citation statements)

References 16 publications

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“…In the meantime, Vu et al [19,20] conducted an active measurement on the overlay characteristics of the PPTV system and derived mathematical models for the distributions of channel population size and session length. Wang et al [23,25] presented the first PPTV distributed crawler system in order to improve the crawling performance, which was used to evaluate the impact of pollution attack in P2P IPTV system. Compared with the crawler of [7], this crawler needs to spend from 3 to 8 min to capture single topology snapshot for most of PPTV programs.…”

Section: Related Workmentioning

confidence: 99%

“…(ii) In our previous work [25], a distributed crawler based on old version of PPTV was implemented. Almost all the existing measurement studies were undertaken on old version of PPTV with no encryption mechanism.…”

Section: Related Workmentioning

confidence: 99%

“…However, this method is difficult to obtain complete global views of large-scale P2P IPTV overlay networks; therefore, it is often constrained to measure local features of those networks. Because the active measurement method based on crawler can obtain a global view of large-scale P2P IPTV overlay network directly and does not need the harsh precondition, it has become the most popular and effective method to study P2P IPTV systems [7,8,[19][20][21][23][24][25]. By analyzing the traces provided by the service providers, researchers can undertake accurate active measurement studies easily.…”

Section: Introductionmentioning

confidence: 99%

“…(ii) In order to improve the performance of system, some P2P IPTV service providers started to cooperate with research institutions. The distributed architecture can be used to improve the crawling performance of crawler system by making full use of the heterogeneous processing capabilities of much more crawler hosts [25]. However, the precondition of measurement is very harsh because most of the service providers are not willing to publish the technical details of software owing to its commercial nature.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the accuracy of capturing snapshots in large‐scale P2P IPTV systems

Wang

Chen

Wang

et al. 2015

Int J Communication

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With the growing maturity of peer-to-peer (P2P) technology, Internet protocol television (IPTV) applications based on that gained great success commercially and have attracted more and more attentions from both industry and academia. Currently, the active measurement method based on crawler technology is the most popular and effective one to study P2P IPTV systems. Existing measurement results revealed that accuracy of captured overlay snapshots depends on the crawling speed of crawler system. In order to capture more accurate overlay snapshots of P2P IPTV system, we developed a very fast and efficient distributed crawler system using the distributed architecture and peer degree-rank mechanism. In this paper, we first introduce the architectures of PPTV channel-list resource distribution and the whole system, which is the most popular and largest instance of P2P IPTV applications nowadays. Subsequently, this paper evaluates the crawling results of two dedicated crawlers capturing from peer-list servers and ordinary peers, respectively. Finally, we propose a fast and accurate dedicated crawler system based on distributed architecture and peer degree rank for PPTV. The experiment results show that the performance of our distributed crawler system is much better than other existing crawler systems. Specifically, our distributed crawler can track a very popular channel with about 7200 online users in 30 s. It is also reasonable to believe that our distributed crawler system can capture complete overlay snapshots. To the best of our knowledge, our study work is the first to explore capturing accurate overlay snapshots of large-scale P2P IPTV applications. Our crawler system can provide a good solution for capturing more accurate overlay snapshots of PPTV system and can also be used to help researchers to design crawler systems for other P2P IPTV systems.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Exploring the accuracy of capturing snapshots in large‐scale P2P IPTV systems

Wang

Chen

Wang

et al. 2015

Int J Communication

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show abstract

“…The known applications include PPTV (former PPLive), PPStream and UUSee. From 2006, related measurements of P2P IPTV were done by a number of academic staff, and we carried out the related work [7][8][9] from 2007.…”

Section: Introductionmentioning

confidence: 99%