A framework for cross-layer optimization of video streaming in wireless networks

tion problem in two steps. First, we formulate an abstract optimization problem for video streaming in wireless networks in general. This formulation exposes the important interaction between parameters belonging to different layers in the network stack. Then, we instantiate and solve the general problem for the recent IEEE 802.11e WLANs, which support prioritized traffic classes. We show how the calculated optimal solutions can efficiently be implemented in the distributed mode of the IEEE 802.11e standard. We evaluate our proposed solution using extensive simulations in the OPNET simulator, which captures most features of realistic wireless networks. In addition, to show the practicality of our solution, we have implemented it in the driver of an off-the-shelf wireless adapter that complies with the IEEE 802.11e standard. Our experimental and simulation results show that significant quality improvement in video streams can be achieved using our solution, without incurring any sign...

• Type: Journal
• Year: 2011
• Where: TOMCCAP
• Authors: Cheng-Hsin Hsu, Mohamed Hefeeda
• Keywords: IEEE 802.11e, IEEE 802.11e Standard, TOMCCAP 2011, Wireless Networks