11a/e.
The integrated cross-layer solution that maximizes the product of the expected video
quality with the link utilization appears to provide significant improvement over other
optimized solutions. Moreover, the utilization of network information (for the dynamically
Cross-layer Optimized Video Streaming over Wireless Multi-hop Mesh Networks 126
changing conditions of the various hops) gathered via overlay-network feedback, appears
to be of paramount importance for the overall video quality at the receiver hop.
Although the proposed algorithm operates per video packet and can potentially incur
significant complexity and communication overhead for the overlay network infrastructure,
there is a significant potential for improved video streaming performance. This motivates
us to investigate the problem further and attempt to explore the best granularity for the
optimization as well as the network feedback that provides optimal
quality/complexity/robustness in a distributed video streaming scenario over the hops of
the mesh network. Finally, under the proposed paradigm, the issues of collaborative
streaming of multiple flows and fairness deserve significant attention in future research.
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