A STUDY OF ENERGY EFFICIENCY IN WIRELESS SENSOR NETWORK USING PEGASIS ROUTING PROTOCOL

• Main Author: Taf'al Husna, Wanna
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54931
• Institution: Institut Teknologi Bandung

Wireless sensor network (WSN) is a collection of a number of sensor nodes that could communicate with each other wirelessly aimed to obtain and gather data from sensor measurements which were spread in the field. The biggest challenge in designing WSN is to minimize energy consumption so that could extend the lifetime of the network, generally the energy source of the sensor node comes from batteries that have limited energy capacity. A simple approach for gathering data in WSN is each sensor node could directly transmit its data to the base station, but if the base station is located far from the sensor node then its energy will quickly run out due to the long transmission distance. Considering the energy consumption of the sensor node depends on the transmission distance, a routing protocol which could minimize the transmission distance is required. In this research, the PEGASIS (Power-Efficient Gathering in Sensor Information Systems) was built, a chain-based routing protocol as an effort to minimize the transmission distance where each sensor node only sends data to its closest neighbor and takes turns transmitting to the base station. The simulation method using MATLAB was done to determine the performance of PEGASIS routing protocol in WSN by substituting some parameters that correspond to the HC12 wireless communication module. The simulation results showed that PEGASIS routing protocol performs better than direct transmission including could save 34% energy consumption in a trial of 100 sensor nodes placed randomly in an area of 100x100 m2 and a lifetime of more than 6 times longer.