关键词: 对等网 流媒体 缓存区段 局部最少优先 最早时限优先

Abstract:

Due to the high dynamics and heterogeneity of P2P, and the high bandwidth and continuity of media streaming services, the scheduling of data blocks ad transfer nodes in the P2P media streaming systems is particularly important. This paper presents a scheduling algorithm based on the cache segments fo r data-driven P2P streaming media systems. According to the time llne, a cache is divided into several segments, and each segment is applied to a reason  able scheduling algorithm. Simulation results show that, even in highly dynamic circumstances of the network, the scheduling algorithm can still guarant  ee the continuity of streaming media and the collaboration between the nodes.

Key words: P2P, streaming media, cache segment, local rare first, earliest deadline first