LEACH-T: LEACH Clustering Protocol Based on Three Layers

Power consumption of routing protocols is one of the main issues that wireless sensor networks (WSNs) encounter in their lifetime. Low-Energy Adaptive Clustering Hierarchy (LEACH) clustering protocol was introduced to reduce power consumption. However, in LEACH, power consumption increases massively as the distance between sink node and cluster heads (CHs) increases. This drawback introduces distance as one major issue in LEACH since it does not contain routing. In this work, a LEACH based protocol consists of three layers (LEACH-T) is proposed. Each layer has its own CHs. The layers attempt to reduce the distance between sink node and CHs. The third layer is utilized if the distances between CHs and sink node exceed a threshold value. To measure the performance of LEACH-T, simulation is utilized to compare its consumption to pure LEACH. Results show that the proposed protocol extends network lifetime and reduces power consumption.