Downlink OFDM Scheduling and Resource Allocation for Delay Constraint SVC Streaming

Abstract—Efficient delivery of multimedia contents over wireless network is essential for future communication networks. However, content distribution and network engineering are traditionally studied separately, which leads to suboptimal network performance. In this paper, we consider the problem of scheduling and resource allocation for multi-user video streaming over downlink OFDM channels. The video streams are precoded with the SVC coding scheme, which offers both quality and temporal scalabilities. The OFDM technology provides the maximum flexibility of resource allocation in terms of time, frequency, and power. We propose a gradient-based scheduling and resource allocation algorithm, which explicitly takes account of video contents, deadline requirements, and the previous transmission results when calculating users’ priority weights. Simulation results show that our proposed algorithm always outperforms the contentblind and deadline-blind algorithms, with a performance gai...

• Type: Conference
• Year: 2008
• Where: ICC
• Authors: Xin Ji, Jianwei Huang, Mung Chiang, Francky Catthoor
• Keywords: Communications, Downlink Ofdm Channels, ICC 2008, Resource Allocation, Suboptimal Network Performance