Análise probabilística de um sistema de rastreamento baseado em RFID

Abstract

In Brazil, telecommunications companies face many obstacles to have and maintain a robust network, with coverage, capacity and quality. In order to give quality to a telecommunications network, companies always aim to reduce unavailability. This metric is very important in this environment, since it is the main item in the measurements of the regulatory agency (ANATEL - National Telecommunications Agency). There are many aspects that can influence this metric ranging from climatic aspects to vandalism. This last one is a big problem that the operators face in Brazil today as well as the qualified thefts that besides bringing great damages, also increase the unavailability of the network. Considering these problems, some solutions are adopted in order to turn these events more difficult. Other solutions aim at reducing this type of action in the medium and long term. In this dissertation we propose a solution that helps to reduce these acts and to recover these equipments using a development platform with a microcontroller, a GSM/GPS card, a board with an RFID reader and RFID tags. The intention is to insert a simple tracker in the equipment that sends messages from its location to the NOC (Network Operations Center) and after arriving at a warehouse, looks for other equipment that has the same system and informs the NOC of the location, how many and which equipment is close to it. This dissertation is based on the calculations of stochastic systems with Markovian properties to demonstrate that the proposed system is efficient and has a high probability of success in certain scenarios.