Dynamic QoS control function of video communication for remote technical consultation system

The purpose of this study is to develop a dynamic QoS (Quality of Service) control function for Remote Technical Consultation System. The Remote Technical Consultation System realizes technical consultation using video communication tool through narrow band networks. The proposed function can dynamically control size and quality of video images according to user's demands and purposes. The user does not need to adjust QoS parameters by using the proposed function during performing remote technical consultations. Furthermore, the proposed function can transmit video images effectively for an assigned network by controlling QoS parameters to fit video images into the network. We developed the dynamic QoS control function and added this function to video tool for the Remote Technical Consultation System. We experimented on three different bandwidth networks using the developed function. From experimental results, we verified that the proposed function works finely on any bandwidth and transmits video images to the best on the assigned network bandwidth.