A segment version transcoding for client-centric wireless mobile media streaming

LEE Chong-deuk¹, BANG Jun-ho², JEONG Taeg-won¹

(1. Division of Electronic Engineering, Chonbuk National University, Jeonbuk 561-756, Korea;
2. Department of IT Applied System Engineering, Chonbuk National University, Jeonbuk 561-756, Korea)

Abstract:An object segment similarity function is taken into account from the continuous media frames to measure the individual streaming profit of certain segment versions of a media object. Therefore, a new segment version-based transcoding (SVT) mechanism is derived for a quality of service (QoS) of client-centric media streaming in wireless mobile networks. The derived function utilizes the fuzzy similarity of certain segment versions of an object. This mechanism provides the effectiveness of reduction of the stream startup latency among segment versions, and the average access of each version. Thus, the proposed segment version transcoding mechanism reduces packet loss which in turn increases streaming performance and throughput. The performance of the partitioned segment versions is simulated and some segment versions are completed. The simulation results show that the proposed mechanism outperforms the other mechanisms in average cache hit ratio and in average startup latency ratio.

Key words:similarity function; media object; segment version; client-centric media streaming