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Títol: A study on Satellite IoT


Estudiants que han llegit aquest projecte:


Director/a: GÓMEZ MONTENEGRO, CARLES

Departament: ENTEL

Títol: A study on Satellite IoT

Data inici oferta: 23-06-2020     Data finalització oferta: 23-02-2021



Estudis d'assignació del projecte:
    MU MASTEAM 2015
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
Satellite IoT, Iridium, Rockblock, payload, current consumption
 
Descripció del contingut i pla d'activitats:
The Internet of Things (IoT) promises a significant transformation of our society. IoT devices (often equipped with sensors) may obtain information from the physical world, which can be used to enable innovative applications, such as smart cities, smart home, Industry 4.0, etc.

There exists a wide range of communications technologies for IoT devices. Recently, a number of solutions based on satellite communications have appeared on the market. Such solutions offer a reasonably good alternative when no other infrastructure is available for IoT applications.

This project proposes two main tasks: i) surveying the current landscape of satellite IoT technologies, and ii) performing an evaluation of a selected satellite IoT technology. For the second task, the priority will be to perform real experiments. However, if for unexpected reasons that becomes not possible, the second task will be reoriented towards a more theoretical approach and/or expanding the first task.
 
Overview (resum en anglès):
The increase in the application of Internet of Things (IoT) prompted satellite technologies to participate in this telecommunication market. The present document reviews the state of the art of satellite IoT at present, and evaluates a number of performance metrics when using the Iridium satellite IoT technology by making experiments on a real device.

The main satellite IoT modes of operation are detailed in the document, including the requirements for most related IoT applications. In addition, this document discusses the most used wireless protocols in large areas and their adaptation to work with satellite links. Furthermore, the protocols used in the lower layers of the satellite IoT model are detailed, followed by an overview of the main satellite IoT service providers and the products they offer.

The Iridium technology, offered by the homonymous popular satellite provider, has been chosen in this project to analyze the operation and performance of an active IoT device. This provider uses its Low Earth Orbit (LEO) constellation to offer data services. The present document evaluates the operation of a device using an autonomous Iridium 9602 module, called RockBLOCK Mk2, when transmitting and receiving messages.

A model of the behavior of the RockBLOCK Mk2, used to transmit messages with variable sleep periods, is provided. Additionally, a performance analysis of the device is carried out based on the proposed model to observe the influence of the message size on energy-related performance parameters such as average current consumption, battery lifetime, and energy cost of transmitting a given payload size.


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