TITRE Adaptive Packet Video Streaming Over IP Networks - LaBRI

Figure 5-29: Video stream sent by the user
5.5.3.2 Experimental Results
The network is load differently each time. Figure 5-30 shows the network load during the
period of the experiment (180s). This load represents the traffic sent from the n traffic generators
to the receivers. This measure has been taken from the ingress interface of the core router. During
to first 60 second there are only n=5 sources on/off. From 60 to 120 second there are n=8 sources
and in the last 60 second (from 120s to 180s) the number of the source are n=10. Each source can
be either on or off.
The PDP makes the decision according to the smoothing value of the bandwidth usage (i.e.
EWMA). This decision is an identifier of the policy that the PEP must install. The following values
Min_th=4Mbit and Max_th=7Mbit determine whether the video path is in congestion or not.
Figure 5-30: Bandwidth usage in core router
Policies used to mark video traffic are listed in Table 5-1.
Events sent from the PDP to the edge router doing the marking are listed in Table 5-2. Each
event is time stamped.
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