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Application level multicast with multiple distribution trees is effective for real-time streaming in terms of low delay and jitter. However, failure of upstream nodes drastically influences on the performance of many downstream nodes in multiple tree-based multicast. This degradation of video data continues until reconstruction of distribution trees finishes. Therefore, it is important to recover...
Video distributions using TCP (called "TCP streaming") like YouTube have been increased rapidly with the improvement on the speed and capacity of the Internet. Thus, it is an important technical issue to guarantee QoS (quality of service) suitable for TCP streaming. However, it is difficult for the existing IP network to guarantee QoS of the TCP streaming. So far, in order to achieve the...
When multiple overlay networks are constructed over the same underlying IP network, overlay paths on different overlay networks may share some links on the IP network. In general, however, because overlay networks do not recognize the existence of each other, they have no consideration on such shared physical links. In this paper, a cooperative routing method for multiple overlay networks is proposed...
To guarantee Quality of Service(QoS) for real-time applications strictly, we have proposed an output buffer control mechanism in IP routers, confirmed its effectiveness through simulations and implemented a prototype. This mechanism can guarantee QoS strictly within single router. In this paper, we propose the control scheme of mutual cooperation between IP routers equipped with the above-mentioned...
Various real-time applications are widely used with the development of network infrastructure. To guarantee QoS (quality of service) of these applications strictly, the Internet requires a flow-based priority control. Thus, we have proposed an output buffer control mechanism. In this paper, to guarantee end-to-end QoS maximally by exploiting the buffer control mechanism, we propose the method of mutual...
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