Fuzzy Mapping of QoS to QoP in Multimedia Synchronization
多媒体同步中QoS到QoP的模糊映射

In this paper, a synchronization QoP (quality of presentation) mapping concept is proposed for meeting the quality requirement of multimedia real-time transmission. The essence of this idea is to create a tool to measure the synchronization quality for distributed multimedia systems from the viewpoint of perceptive field through building the fuzzy mapping from QoS (quality of service) to QoP. Based on Dr. Ralf Steinmetz's perception experiment, the algorithm to construct the synchronization QoP mapping is proposed. This algorithm is based on approximating perceptual annoying curves. By extracting the fuzzy membership functions, it implements the fuzzy mapping from QoS to QoP. With this algorithm, the paradigm which applies the fuzzy QoP mapping to time model of multimedia synchronization in real-time multimedia communication is also presented. Using the fuzzy membership function of fuzzy QoP mapping as conditions of fuzzy control mechanism, the transition of synchronization semantics can be controlled to adjust the quality of media synchronization.