Scheduling Strategy Based on Cache Offset for P2P Streaming Media

The rarity and urgency of data block cannot be concerned simultaneously when the popularity of data block is calculated in the existing P2P scheduling strategies, which leads to the inferior playback continuity and startup latency.This paper proposes a Scheduling Strategy based on Cache Offset(SSCO) strategy, the above-mentioned problem has been solved well by means of counting and processing the information about the Cache Offset(CO) of playback of quested data block and the two metrics have been improved noticeably.