  Several researches are focused on the QoS (Quality of Service) and Energy
consumption in wireless Multimedia Sensor Networks. Those research projects
invest in theory and practice in order to extend the spectrum of use of norms,
standards and technologies which are emerged in wireless communications. The
performance of these technologies is strongly related to domains of use and
limitations of their characteristics. In this paper, we give a comparison of
ZigBee technology, most widely used in sensor networks, and UWB (Ultra Wide
Band) which presents itself as competitor that present in these work better
results for audiovisual applications with medium-range and high throughput.
