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An intermittent transmission control in the MAC layer protocol is very important for managing the energy consumption of wireless sensor networks. This research focuses on an intermittent receiver-driven data transmission (IRDT) protocol in which communication starts when multiple receiver nodes transmit their own IDs intermittently and a sender node receives them. This method aims at prolonging network...
In this paper, we focus on the calling behavior of Japanese tree frogs, which make calls alternately with their neighbors in order to increase the probability of mating. This behavior can be applied in phase control which realizes collision-free transmission scheduling in wireless communication. We propose a self-organizing scheduling scheme inspired by this frog calling behavior for reliable data...
In this paper, we propose a new mechanism which detects tampered-TCP connections at edge routers and protects well-behaved TCP connections from the tampered-TCP connections, resulting in maintaining the fairness amongst TCP connections. The proposed mechanism monitors the TCP packets at an edge router and estimates the window size or the throughput for each TCP connection. By using estimation results,...
Providing end-to-end reliability for data transmission is a major challenge for energy-constrained and bandwidth-limited wireless sensor networks. To meet this challenge, attempts have been made using a multi-path transmission mechanism that encodes an information bitstream using forward error correction (FEC), and sends the obtained packets over a number of paths to the destination. Algorithms that,...
We propose a new architecture, the lambda computing environment, that accomplishes high speed data transmission over optical fibers. In the lambda computing environment, we can achieve highly reliable high-speed communication by establishing wavelength paths. In this paper, we use the Globus toolkit to build a grid environment and establish the lambda computing environment using the AWG-STAR system...
Interest in the TCP overlay network, which controls the data transmission quality at the transport layer, has grown as the user demand for sophisticated and diversified services in the Internet has increased. In the TCP overlay network, TCP proxy is a fundamental mechanism that transparently splits a TCP connection between sender and receiver hosts into multiple TCP connection at some nodes in the...
In the present paper, ImTCP-bg, a new background TCP data transfer mechanism that uses an inline network measurement technique, is proposed. ImTCP-bg sets the upper limit of the congestion window size of the sender TCP based on the results of the inline network measurement, which measures the available bandwidth of the network path between the sender and receiver hosts. ImTCP-bg can provide background...
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