Cooperative routing with video complexity for heterogeneous motion-level streaming

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• 作者：Jeongtae Kim ; ^{jeongtae@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Soyoung Park ; Hyowon Suh
• 关键词：Video complexity ; Rate-distortion model ; Cooperative relay ; Flow routing ; Multi-hop relay
• 刊名：Computer Communications
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：77
• 期：Complete
• 页码：1-9
• 全文大小：1159 K

文摘

Cooperative relay is a promising technique that can improve network capacity in multi-hop wireless networks. However, conventional video streaming schemes on cooperative relay networks do not consider the video complexity of each video sequence. In this paper, we develop and experimentally evaluate a video streaming scheme that considers video complexity over a cooperative multi-hop relay network. We first develop a video distortion model taking into account the video complexity of the video sequences. Then, we propose a flow-routing algorithm for heterogeneous motion-level video streams in multi-hop cooperative networks. To evaluate the video routing performance for heterogeneous motion-level video sequences, we conduct experimental simulations with the proposed routing algorithm and a video distortion model. Numerical results show that network performance improves when video sequences are routed while considering heterogeneous motion levels to maximize the minimum peak signal-to-noise ratio (PSNR) value for the video sessions. The simulation results also show that the adoption of cooperative relays and a hop-count limitation can also improve the routing performance of video streams.