Otimização de fluxo de dados em uma rede de sensores utilizando a técnica de codificação de redes

Abstract

Wireless sensor networks (WSNs) make it easy to monitor and control environments. They are formed by a collection of nodes called sensors, which are capable of capturing and disseminating information. These networks can be used in a variety of applications, such as environment monitoring, patient remote monitoring, and intrusion detection. We can also mention the aid in rescues, precision agriculture and factory control among others. Problems caused by data congestion and limited physical resources are common in these networks. For optimization of the data fiow, a revision of the deployment strategy is required. Therefore, it is important to apply techniques that reduce the transmission and loss of data that are transmitted. The strategies used in conventional networks do not always present efficient results. This work has as main objective to improve the development of techniques for optimization of data fiow in a network of wireless sensors. In particular, we use the technique of network coding to demonstrate through experiments the degree of efficiency of new data transmission optimization protocols. The experiments were simulated through the network programming framework wireless sensors composed of the TinyOS operating system, NesC programming language and TOSSIM simulator. In addition, we use the Python programming language for simulation of the wireless sensor network topology. The results obtained demonstrate a better performance when applied to the technique of coding networks in the data communication protocol.