REDUCING METHOD OF ELECTRIC POWER AT WIRELESS SENSOR NETWORK

摘要

A method of minimizing power in a wireless sensor network is provided to transmit data to a receiving node with the minimum power at a transmitting node, thereby minimizing data transmitting power of the transmitting node. A transmitting node checks a transmission power value set for a receiving node before data is transmitted to a receiving node(S100). If a predetermined transmitting power value does not exist, the transmitting node transmits the data with the maximum power(S110). The receiving node calculates an RSSI(Radio Signal Strength Indicator) value, loads the RSSI value in ACK(acknowledge) and transmits it to the transmitting node(S130). The transmitting node calculates an approximate transmitting power value according to the RSSI value(S140). If new data is generated after that, the transmitting node transmits the data to the receiving node with newly set transmitting power(S150).