Author_Institution :
Syst. Network Res. Team LSIS Co., Ltd., Anyang, South Korea
Abstract :
Recently, radio frequency energy transfer (RFET) attracts more and more interests for powering sensor nodes in the wireless sensor network (WSN). In the conventional WSN where sensor nodes are powered by a small battery with finite amount of energy, reducing energy consumption of sensor nodes is of primary importance. On the contrary, in the WSN with RFET, since energy can be continuously supplied to sensor nodes, reducing energy consumption is not an important issue. However, in the WSN with RFET, the energy harvesting rate of each sensor node depends on its location, which causes the unbalanced available energy among sensor nodes. Hence, to improve the performance of the WSN with RFET, it is important to develop network protocols considering this property. In this paper, we study this issue with jointly considering routing, scheduling, and power control in the WSN with RFET. We obtain a solution for joint routing, scheduling, and power control considering unbalanced energy harvesting rates among sensor nodes, and show that our solution can improve network performance significantly.
Keywords :
energy consumption; energy harvesting; optimisation; power control; protocols; scheduling; telecommunication control; telecommunication power management; wireless sensor networks; RF energy transfer; RFET; WSN; cross-layer optimization; energy consumption; network performance; network protocols; power control; radio frequency energy transfer; scheduling; sensor nodes; unbalanced energy harvesting rates; wireless sensor networks; Energy consumption; Energy exchange; Energy harvesting; Optimization; Power control; Routing; Wireless sensor networks; Power control; RF energy transfer (RFET); Routing; Scheduling; Wireless Sensor Network (WSN);
