Urban mobility in smart cities using low-cost and energy-saving wireless sensor networks

A wireless sensor network (WSN) is a specific technology that helps in creating smart cities. Their aim is consists in creating a network containing many nodes of intelligent sensors that can measure multiple parameters of interest for better city management, and a control of urban traffic (fluidity of traffic at an intersection). Each network node exhausts its energy because the battery capacity is limited. In this paper, we propose to study the problem of wireless sensor networks in smart cities, focusing on low-cost and energy saving. It is necessary to study architecture of a sensor node which is characterized by a limited energy capacity, making the optimization of the energy consumption in the network the major constraint to prolong the network lifetime. We will discuss the different factors involved in the consumption of energy and we will present some techniques to preserve it. In this work, we will present an overview of our solution for energy conservation in the WSN. We will describe our solution which aims to avoid frequent transmission packets of data sent to the light controller. Then, we will detail the two simulators (GLD and SUMO) that we have used. Simulation results have shown that our solution enables minimization of number of packets sent, and therefore reduce the energy consumption, moreover, a lifetime of the network will be greater.