Improvement of LEACH Algorithm Based on Inter-Cluster Ring Routing Strategy

摘要

Wireless Sensor Network (Wireless Sensor Network, WSN) is a self-organizing network formed by a large number of wireless sensor nodes through radio communication [1] . The sensor nodes in the network cooperate with each other to monitor and collect the object information in the observation area, and the information is transmitted to the users who need this information after data fusion processing. It is often deployed in harsh environments , such as oceans, dee p forests, and deserts. At the same time, the sensor nodes in the network are powered by batteries ? [2] . These external factors make it impossible to replace batteries manually. Therefore, energy is an important resource for wireless sensor networks ? [3] . In this paper, aiming at the problems of LEACH inter-cluster communication, from the perspective of energy saving, an improved strategy using inter-cluster ring routing is proposed. This strategy first abstracts all sensor nodes into a ring system model during the network topology formation stage. In the data transmission stage, a ring transmission strategy is adopted, and nodes on the ring are used to randomly and evenly undertake data transmission tasks, so the imbalance of energy consumption of sensor nodes can be effectively reduced. Simulation experiments show that this strategy can extend the network life cycle to a certain extent.