Scalable Video-on-Demand Streaming for Heterogeneous Clients in Wireless Network

摘要

Periodic broadcasting has achieved prominent performance in VoD (Video on Demand) service in wired network. However, the development of wireless VoD service still has gone on hard and slowly in comparison to the rapid growth of mobile video service. In this paper, we propose a scalable video streaming method HQOBA (Heterogeneous Quality-Oriented Bandwidth Allocation) to address the problems in wireless network. To be concrete, in order to tackle the heterogeneous client type problem, we employ variable bandwidth allocation, instead of fixed bandwidth value for each channel. Moreover, to handle the problem of scarce server bandwidth and unpredictable wireless channel conditions, the proposed method takes the advantage of FGS (Fine Granular Scalable) video coding and Periodic Broadcasting to successfully transmit video segment. Further-more, we develop a bandwidth allocation algorithm to maximize client perceptual visual quality for the proposed transmit scheme. The experimental results of HQOBA scheme also validate the effectiveness.