Energy Efficient Multilevel Hierarchical Routing Protocol in Green Internet of Things

IoTs are a distributed network which assists the sensor nodes in joining or departing the network in accordance with their requirement. These nodes are deployed at the places which are located at distance and their size is small. Consequently, the issue of energy usage is faced in the IoT. The base station (BS) is exploited to transmit the data among several sensor nodes (SNs). The similarity is recognized and removed among data of diverse SNs to execute the process of decision-making. Furthermore, the sink node is responsible for exploiting the data at local level and transmitting it to the network's places at distance. The earlier work implements an energy efficient protocol (EEP) called VGDRA to prolong the existence of network. This protocol leads to move sink closer to the clusters so that the data is collected. The present work suggested improved VGDRA protocol which utilizes cache nodes and considers cluster heads (CHs) for transmitting the information to cache nodes. The sink node is moved closer to the cache and helps in gathering the sensor data. MATLAB is executed to simulate the suggested protocol. Various metrics, including amount of dead motes, alive nodes, and packets whose transmission is performed to BS are employed to analyze results.