Media-aware caching mechanism in Diffserv networks

Authors:
Y. Abdelmalek;A. Abdelal;T. Saadawi
Affiliations:
Electrical Engineering Department, City University of New York, New York, NY;Electrical Engineering Department, City University of New York, New York, NY;Electrical Engineering Department, City University of New York, New York, NY
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

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Abstract

Video transmission is becoming an increasingly essential part of the current internet; however before the high video quality at the client side becomes a reality, the best effort model has to adapt the video characteristic to the network conditions. In this paper, we are proposing a media middleware component that can be added to the edge routers in DiffServ network in order to have the responsibility to enhance QoS at the receivers' side. Passing such video frames to differentiated service network increases the video quality and treats the video frames based on their priorities. The media aware sub-layer has the responsibility to cache high priority video frames. We demonstrate through network simulation that the proposed technique decreases the average packet delay, and the packet loss, which yields a better video quality at the clients compared to existing techniques.