Abstract
The emerging high-rate wireless personal area network (WPAN) technology, currently being developed by IEEE 801.15.3 task group, provides a very high-speed short-range transmission capability with quality of service provisions. MPEG-4 bit stream is anticipated to occupy a large portion of the traffic in the WPAN, and its decoding depends on successful transmissions of frame data, which require a low JFR (job failure rate) and a Iow delay variance as well as a high throughput. In this paper, we propose a simple application-aware MAC scheme for the WPAN in order to achieve a high-quality video transmission of MPEG-4 stream: a device tells the piconet controller the maximum sizes of its frames along with the channel time requests, and then the controller allocates a channel time for the device according to the predefined MPEG frame sequence. Simulation results show that our scheme achieves significantly lower JFRs, lower delay variances, and higher throughputs than the standard scheduling scheme.
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