A Novel Prefix-Based Patching Algorithm for Streaming Media in WiBro System

In this paper, a novel prefix-based patching algorithm named DP2 (Dynamic Prefix-based Patching algorithm) is proposed for mobile IPTV service in the WiBro system. Proposed algorithm increase the resource utilization of wireless bandwidth and server. It uses the prefix caching in proxy server to batch those requests that demand the same video. This algorithm just requires the mobile terminal can receive two streams at the same time. The threshold is also introduced in the novel algorithm to control the frequency of regular streams initiated. Then the optimized patching window is derived. A mobile IPTV structure for this algorithm is also proposed, which uses the MBS technique. Finally simulation result show that DP2 algorithm can reduce the data volume and patching streams significantly compares to the DS2AM2PC algorithm.