Wireless sensor network node adaptive power control system and method based on fuzzy logic

Abstract

The invention introduces fuzzy logic in the adaptive power control of the wireless sensor network node, thus reducing the node energy consumption and prolonging the network lifetime. The system consists of a transmitting node and a receiving node which are shown in an appended drawing, wherein the transmitting node contains a transmitting module 101, a historical power module 102 and an adjusted value receiving module 103; the transmitting module transmits data packets according to the reference transmitting power provided by the historical power module; the adjusted value receiving module is used to update the historical power level in real time; the receiving node contains a receiving module 104, a QoS extraction module 105, a fuzzy computing module 106 and an adjusted value feedback module 107; the receiving module works in the physical layer and is used to receive signals; the QoS extraction module is used to collect the QoS parameter of a receiving terminal; the fuzzy computing module uses a fuzzy logic controller to calculate the adjusted value and submits the calculation result for the adjusted value feedback module; and the adjusted value feedback module is used to return the power adjusted value to the transmitting node.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, and especially refers fuzzy logic to the adaptive power control of wireless sensor network nodes. Background technique [0002] With the rapid development of Micro-Electro-Mechanical System (MEMS, Micro-Electro-Mechanism System), System on Chip (SOC, System on Chip), wireless communication and low-power embedded technology, Wireless Sensor Networks (WSN, Wireless Sensor Networks) Born, and with its low power consumption, low cost, distributed and self-organizing characteristics, it has been widely used in military, aviation, anti-terrorism, explosion-proof, disaster relief, environment, medical, health care, home, industry, commerce and other fields . [0003] The wireless sensor network is composed of a large number of miniature sensor nodes deployed in the monitoring area, the energy of the nodes is limited and the communication medium is shared. This requires that on the premise of me...

AI Technical Summary

Problems solved by technology

However, from the perspective of a single node, after clustering, what power should be used for communication between the cluster head and the cluster head, and between the cluster head and the sink node is a hot and difficult point in existing research.

In most cases, wireless sensor network nodes send data packets with fixed power, which has certain defects: on the one hand, if nodes send data packets with fixed high power, it will cause great interference and energy waste; On the one hand, if the node sends data packets with fixed low power, it is easy to cause packet loss, and the retransmission after packet loss reduces the real-time performance of data and wastes energy.

Images