We assume that the mesh network topology is fixed over the duration of the video
session and that, prior to the transmission, each application (video flow) reserves a
predetermined transmission opportunity interval, where contention-free access to the
medium is provided1. This reservation can be performed following the principles of the
HCCA2 protocol of IEEE 802.11e [12] and can be determined based on the amount of
flows sharing the network. Although the design of such a reservation system is an
important problem and it affects our results, recent work showed that scheduling of
multiple flows in the context of a mesh topology can be done such that the average rate for
every flow is satisfied and the interference to neighboring nodes is minimized [13]. Hence
a similar solution can be applied for our case and the available nodes and links within the
entire mesh topology can be pre-established by a central coordinator prior to the video
streaming session initiation. This minimizes the probability of additional delays and link
failures due to routing reconfigurations during the video streaming and also decouples the
problem of optimized media streaming and optimized route and link-reservation
establishment within the wireless multi-hop network.
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