Katsushi Kobayashi

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Links with high bandwidth ranging from 1 to 10 Gbps are increasingly in use worldwide. Congestion control with the positive use of router feedback that explicitly indicates network conditions is a promising way to address the performance issues of congestion control especially in such high-speed networks. In this paper, we propose SIRENS, a scalable,(More)
IP multicast technology is highly advantageous for various applications and future needs in the Internet. Yet, it is generally recognized that the IP multicast routing protocol is fairly complex and nonscalable and requires additional maintenance and operational cost to network administrators. Although there has been much research related to IP multicast(More)
Congestion control with explicit router feedback, such as TCP Quick-Start and XCP, is a promising way to enhance the performance of data transport especially in high-speed networks. When designing such transport protocols, the tradeoff between the granularity of feedback information and additional cost of routers for feedback processing and state keeping(More)
In this study, we present the flexible arrays of inexpensive network (FAIN) architecture: it can be used to maximize parallelism in network systems in order to satisfy future Internet traffic growth. Although the "parallel-in-global" approach used in FAIN overcomes a constraints of serial interfaces, the performance of applications with s small stream can(More)
This document specifies the packetization scheme for encapsulating the 12-bit nonlinear, 20-bit linear and 24-bit linear audio data streams into a payload of the Real-time Transport Protocol (RTP). This draft also specifies the way of SDP announcement, when the audio data is preemphasized before sampling. The treatment of preemphasized audio data specified(More)
Congestion control with the positive use of explicit notification that indicates internal network conditions is a promising way to address the performance issues of congestion control in high-speed networks. We previously proposed SIRENS, a scalable, robust, and flexible fine-grained explicit notification framework where each router captures a snapshot of(More)
Networks operating at 1 Gbit/s, 10 Gbit/s or even 100 Gbit/s and spanning several countries or states are now becoming commonplace. More and more users have to transfer routinely between multi-GB and multi-TB datasets over these gigabit networks. There is a growing range of application domains for such massive transfers including dataintensive Grids (e.g.,(More)