P2P Object-based adaptivE Multimedia Streaming (POEMS)
Journal of Network and Systems Management
Differentiated object priority control mechanism for MPEG-4 streaming
Computer Communications
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In this article, we investigate efficient transmission ofObject-based MPEG-4 video over IP networks with QoSmanagement capabilities. MPEG-4 Audio Visual Objects(AVOs) are classified based on application-level QoScriteria and AVOs semantic descriptors according toMPEG-7 framework. MPEG-4 AVOs requiring same QoSperformance from the network are automaticallyclassified and multiplexed within one of the IP DiffServPHB (Per Hop Behaviors). Object data-packets within thesame class are then transmitted over the selectedtransport layer with the corresponding bearer capabilityand priority level. We propose to extend the MPEG-4System architecture with a new "Media QoSClassification Layer". This layer provides automatic andaccurate mapping between MPEG-4 application-levelQoS metrics and underlying transport network with QoSmechanisms such as IP DiffServ. The "Media QoSClassification Layer" makes use of a neural networkclassification model that is transparent to application andnetwork layers. Implementation and performanceevaluation of the proposal are also described.