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A panoramic video which supports to make viewers feel an immersion through fitting to a wide field of view (FOV) larger than the human visual angle needs an interactive viewing method such as selecting targeted view point among widely viewing points of a panoramic video because it difficult to simultaneously view a whole panoramic video due to a limited viewing environment and bandwidth. When a user officially uses a view navigation in order to select a view point, it happens waste of resources such as bandwidth owing to the transmitted video data of unnecessary view points. Therefore, this paper proposes the spatial-temporal prediction filter (STPF) which is based on the direction and velocity of the view navigation for transmitting only the necessary video data. As a result of simulation, STPF reduces bitrate saving rates by from 6% to

AbstractsVarious multimedia services such as network games and other audiolvideo applications cause traffic increases in the Internet, necessitating the interconnection of the IP networks and the ATM network. To interconnect IP networks and the ATM network effectively, the efficient traffic control and scheduling schemes are required. In this paper we propose a novel buffer control and packet scheduling algorithm for the access point, which can cope effectively with the changing status of the network through the service point concept and the OAM cells.

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