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The most challenging issue of sensor networks is extension of overall network system lifetimes. It is important for the extension of system lifetime to determine the routing considering data aggregation. Data aggregation can reduce network traffic by the elimination of the redundant data. Though data aggregation is effective, sensor node needs a certain amount of RAM to aggregate data. RAM has standby energy, and its power consumption is one of the major factors in sensor node. In this work, we investigate the relationship among RAM capacity, data aggregation and power consumption. Then, we propose to use divided operating SRAM. Proposal method can reduce energy of sensor node even if RAM capacity is large.
Date of Conference: 22-24 April 2008