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Energy-Efficient Bandwidth Allocation for Multiuser Scalable Video Streaming over WLAN


We consider the problem of packet scheduling for the transmission of multiple video streams over a wireless local area network (WLAN). A cross-layer optimization framework is proposed to minimize the wireless transceiver energy consumption while meeting the user required visual quality constraints. The framework relies on the IEEE 802.11 standard and on the embedded bitstream structure of the scalable video coding scheme. It integrates an application-level video quality metric as QoS constraint (instead of a communication layer quality metric) with energy consumption optimization through link layer scaling and sleeping. Both energy minimization and min-max energy optimization strategies are discussed. Simulation results demonstrate significant energy gains compared to the state-of-the-art approaches.

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Correspondence to Xin Ji.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ji, X., Pollin, S., Lafruit, G. et al. Energy-Efficient Bandwidth Allocation for Multiuser Scalable Video Streaming over WLAN. J Wireless Com Network 2008, 219570 (2007).

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  • Wireless Local Area Network
  • Bandwidth Allocation
  • Quality Constraint
  • Scalable Video Code
  • Scalable Video