Topology Tree Construction and Congestion Avoidance Scheme for Diversified WSN Environment

Abstract

Abstract-Disaster information gathering systems are constructed with diverse sensor devices. The flooding situations of the rivers/canals are monitored with the general purpose sensor devices. Congestion and unbalanced energy consumption problems are raised in the WSN due to the many to one communication requirements. Congestion Control and Energy-balanced scheme based on the hierarchy (CcEbH) is applied to manage traffic conditions. The hierarchical topology is build with three types of neighbor nodes. The same hierarchy nodes, upstream nodes and downstream nodes are assigned in the topology construction process. The congestion is detected with the queue length information of the downstream nodes. The congestion avoidance scheme reroutes the data forwarding process to other downstream nodes with energy details. The diversified sensor data collection system is build with topology tree construction and congestion avoidance scheme. Single and multiple sink based data forwarding mechanism is applied in the disaster management process. Integrated index model is used to manage the congestion and energy levels. Data aggregation and event detection tasks are combined in the system.