Desenvolvimento de protocolo baseado em AODV usando camada física do LoRa

Abstract

In recent years, the concept of Internet of Things (IoT) is increasingly present, and the number of IoT devices grows on a logarithmic scale. Most of these IoT devices are located in urban areas, where the concentration of wireless sensors, among other devices, is large. But we can not rule out remote IoT applications such as agricultural areas, power substations, hydroelectric plants, whatever the scenario is, the demand for communication will be considerable. There are several proposals of networks and protocols to meet the demands of IoT, among them we have the LPWAN's, low power networks with large coverage area. In one of these technologies we can find LoRa ™, which has several specifications defined by LoRaWAN Specification 1R0, which is basically a star network topology concentrating all devices in a gateway where they carry the messages to the external network (internet). At the physical level a proprietary modulation based on Chirp Spread Spectrum (CSS). The proposed work aims to fit a routing protocol in LoRa modulation so that devices within the coverage area can exchange information packets, further extending the coverage area of the network and enabling the exchange of information between devices without the need for a hub. For this, a study will be made in these areas: Ad hoc networks, Carrier Sense to enable the implementation of an AODV-based protocol.