Graduate School and Research Center in Digital Sciences

Peer-assisted VoD systems: An efficient modeling framework

Ciullo, Delia ; Martina, Valentina; Garetto, Michele; Leonardi, Emilio; Torrisi, Giovanni Luca

IEEE Transactions on Parallel and Distributed Systems, Volume:25, Issue:7, July 2014

We analyze a peer-assisted Video-on-Demand system in which users contribute their upload bandwidth to the redistribution of a video that they are downloading or that they have cached locally. Our target is to characterize the additional bandwidth that servers must supply to immediately satisfy all requests to watch a given video. We develop an approximate fluid model to compute the required server bandwidth in the sequential delivery case, as well as in controlled non sequential swarms. Our approach is able to capture several stochastic effects related to peer churn, upload bandwidth heterogeneity, non-stationary traffic conditions, which have not been documented or analyzed before. At last, we provide important hints for the design of efficient peer-assisted VoD systems under server capacity constraints.

Document Doi Bibtex

Title:Peer-assisted VoD systems: An efficient modeling framework
Keywords:Video-on-demand, peer-to-peer, performance evaluation
Department:Communication systems
Eurecom ref:4288
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Bibtex: @article{EURECOM+4288, doi = {}, year = {2013}, month = {12}, title = {{P}eer-assisted {V}o{D} systems: {A}n efficient modeling framework}, author = {{C}iullo, {D}elia and {M}artina, {V}alentina and {G}aretto, {M}ichele and {L}eonardi, {E}milio and {T}orrisi, {G}iovanni {L}uca}, journal = {{IEEE} {T}ransactions on {P}arallel and {D}istributed {S}ystems, {V}olume:25, {I}ssue:7, {J}uly 2014}, url = {} }
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