Resources Allocation Optimization for Scalable Multimedia Data Subject to Quality of Service Contraints

Scalable multimedia data transmission are subject to specific constraints such as the quality of service (QoS) of sensitivity classes and the transmission rate (yielding a maximum size of each frame to send). Many scalable source decoders are used to discarding data than processing an erroneous stream. This featuring class structure is helpful to define a strategy that determines the maximum number of classes to send and deliver the suitable protection and transmission scheme (coding rates and modulation) to apply in accordance with the transmission constraints. It leads to the possible truncation of frame parts transmitted with an unequal error protection (UEP) scheme for severe channel conditions. In a MPEG-4 speech frames context, we compare our approach to other methods using equal error and existing UEP schemes. It results in a significant improvement of the peak SNR (PSNR) quality in poor channel transmission conditions