Abstract
3G mobile broadband, such as FOMA provided by NTT docomo, extends its providing area, and high-speed data transmission is now available all over the country. Because the environment of this high-speed data transmission has been consolidated, large-volume data such as video can be transmitted. Also, variety of communication service for multi media goes on increasing. Sony has developed real-time video transmission system "LocationPorter" by using 3G mobile broadband. "LocationPorter" is a high-quality and stable real-time video transmission system which combines Sony's original video/audio compression technology. Since this is the video transmission by mobile communication, stability of video transmission as the change of communication environment is required. However, Sony successfully produced high-quality and high stability video transmission system by mounting Sony's unique QoS technology. Here is the exposition of Sony's unique QoS technique.
