Study on Energy-Efficient Routing Protocol Based on Experimental Evaluation

The green ICT is becoming extremely important for energy saving. The power consumption of network devices i.e., switches and routers, can be reduced by changing the transmission rate on their interfaces according to the amount of traffic. Energy-efficient routing based on the power reduction of devices may be attractive way for effectively saving energy over networks. Some schemes for energy-efficient routing have been studied in which traffic from some sources is aggregated on the particular link/node for power saving of others when the amount of traffic on network becomes low. Effectiveness of these schemes were shown by computer simulations and experiments in their own network environments. Therefore in this paper, we first implement some schemes on our test-bed network to compare both power consumption and transmission performance of them. We also investigate the applicability and scalability of these schemes on large scale networks and finally discuss important issues for more general and effective schemes.