TITRE Adaptive Packet Video Streaming Over IP Networks - LaBRI

The proposed marking algorithm better takes into account the characteristics and relevance of
MPEG-4 sub streams (audio, video, BIFS, OD signaling…) and performs well with Assured
Forwarding IP Diffserv PHB. Consequently, sensitive video streams will undergo a privileged
processing by the routers using our proposed transport delivery service.
The problem of DVMA is it static behavior. To overcome this limit we proposed a dynamic
packet video marking that can be used to mark the video traffic according to network state. Our
proposal uses network monitoring feedback and policy decision point. The collected monitoring
information is used to manage and to adapt dynamically QoS parameters for user traffic by
changing the marking strategy. The example configuration rules described in our testbed clearly
demonstrate the advantage of using our proposed algorithm. Our system involves a policy-based
management system to achieve a more dynamic network behavior in handling user traffic.
Several issues arise when using dynamic control decisions to handle out-of-profile traffic. One
problem is the pricing and charging schemes in use: Who pays for the service (out-of-profile
traffic), the sender or the receiver? More work has to be done in order to define accurately the
amount of traffic that excesses the profile in order to establish a payment scheme. Also, time-scale
measurement of the PDP response is important and should be evaluated in future work.
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