Atribuição de papéis em redes de sensores sem fio baseada em coloração de vértices

Abstract

The technology available nowadays has enabled the use of large and dense wireless sensor networks (WSNs). One of the main problems in these networks is the optimized assignment of functions to be performed by each sensor. Basically any sensor in a WSN requires some sort of self-configuration, in which roles (functions) are assigned to eachnode with no manual intervention.This work proposes and evaluates a heuristic approach, based on centralized and distributed versions, for the role assignment problem. Such approach is based on a relationship between this problem and the vertex coloring problem. The performance evaluation is accomplished with the network simulator [?]. It is considered the eventgeneration in the sensor field, and the main goal is to save energy in the detection and notification of these events. In this scenario, the network should use the smallest number of sensors in the event detection and send notifications to the sink node using the best route. Simulation results confirm the effectiveness of the proposed method through metrics such as execution time, percentage of not sensed events and numberof sent messages for each event.