| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
On performance evaluation of power-saving scheme of network equipments and energy efficient routing, traffic has been assumed to UDP, namely, time variance of the amount of traffic arriving at switches/routers is relatively small. Therefore, it is effective to reduce the transmission rate on links/ports of such equipments with only the amount of traffic on them. However, by assuming TCP traffic, which has some flow/congestion control mechanism in accordance with the amount of traffic on transmission path, it results in performance degradation of due to the reduction of actual bandwidth.
In this study, we firstly investigated the effective path selection scheme for energy efficient routing and then proposed the energy-aware TCP in which data(segments) transmission is forced to delay in accordance with the utilization on its path for power-saving and the amount of transmission data(segments) is simultaneously increasing for relieving transmission performance degradation.
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