Análisis del sistema de comunicaciones BLE
Tutor / director / evaluatorValenzuela González, José Luis
Document typeBachelor thesis
Rights accessOpen Access
This thesis aims to analyse a complete Bluetooth Low Energy (BLE) communications system. A theoretical study and different experiments have been carried out in order to evaluate if Bluetooth technology can be efficiently deployed in sports events (e.g. marathon, cycle races, etc). To do so, high durability chips are used, providing a higher reliability in terms of time and obtained results. The main features that have been considered to develop the proposed configuration have been: the range and the consumption of the devices by using different configurations, the way in which the movement affects the communication between nodes and the time needed to discover a huge amount of Bluetooth devices. The structure of this paper is composed by an introduction, where an overview of Bluetooth technology is presented, focusing on BLE's performance and its protocol. A study is made throughout the different versions of this specification in order to figure out the updates introduced in each release. Furthermore, the two most important stages for the communication (Scanning / Advertising) are described. They allow to establish a communication between several devices. Regarding the experimental part different tests have been conducted, aiming to characterise the used devices and define its behaviour. For that purpose transmitters and receivers are analysed by means of checking different parameters and how they can be modified trough HCI commands. The rest of tests determined if any of the potential configurations is suitable to cover the aim of this thesis, providing an effective Bluetooth scheme to properly detect devices in highly populated environments (in order of thousand devices).