Peer-to-Peer Time-shifted Streaming Systems

摘要: AbstractIn live streaming systems (IPTV, life-stream services, etc.), an attrac-tive service consists in allowing users to access past portions of the stream.This is called a time-shifted system. In our vision, centralizedtime-shifted system face scalability and ethical issues, there-fore, we address problem designing peer-to-peer wherepeers store deliver chunks. We rst attempt identify maincharacteristics from well-known measure-ments VoD IPTV systems. These overlays are structuresspeci cally designed for Although no eval-uation presented, these preliminary description aim foster discussionson critical service. 1 Introduction Context. The omnipresence streams (i.e., that continuouslyproduced fresh content) represents challenging trend Internet. Atremendous scienti c literature deals with video theperspective will soon represent large majority wholeInternet trac [1]. Still, other forms emerging, particularnew . concept originally coined by Vannevar Bush [2]is currently revisited popular social network tools like twitter : every useris producer life-stream, stream personal data inherentlymade public order be consumed friends. Should life-streams joint withmultimedia generated passive life experience capturing [3], thetrac related applications could become huge. parallel,the proliferation sensors rise Internet things expectedto generate also amount [4]. Without loss generality,we assume this paper consisting continuous series chunksthat (or source ).Problem. most cases, immediately bysome clients , delivery at scale being ensured multicast protocols,powerful data-center or exchanges. A consists, how-ever, stream. context of1