Real-time Video Delivery using Peer-to-Peer Bartering Networks and Multiple Description Coding

Abstract- Broadband Iriteniet access rising ADSL or ca-ble niodenis provides suficienr bandwidth for real-time video streaming. If television channels could be distribrrted on die Inremet, each channel ivorrld get a world wide arrdienre. Howeimec teleiision distributiorr from a single seri’er does not scale and IP-level mrrlricasring is cornplex ai7d costly. We pro-pose a solution based on application-level n~ulticasrirrg rising a P?P riehvork, called P2P-TV. Each peer receiivs a vid,?o streani ar7d initsf also fomard this stream to others. This pg-per presents a17 orcliitectrrrr for streariiing video. Oiir PZP-I’V proposal aims to solve three pmblenis rhar are cirrrenrly not iddressed in other P2P strean~ing pmposnls. rtanicly 1) 1 1 7 1 1 ~-in7i:irzg the usage of 011 aioilable peer bandwidth, 2) rakirig nmrnl rrehi.ork coirdi1;oiis into acconrit (network a r’arenes?), arid 3) the Freeriding probleni. Multiple Description CO,$-ing is an ir~tegralpart of orir solution. By splitting the ifidm stream iiito snialler streanis we car7 riri1i:e all the bandwidth of a pee,: Mrrlriple.stt-eanis allow more eflcierrt aduptarion oj the rniilticast wee 10 ciirrent r7ehl’ork conditions. Bittorrenr-like bartering of conleiif is also enabled by rrsirig nrrrlriple stream. Kegwords: peer-to-peer, television, multicasting, freeriding. multiple description coding, network awareness