Dublin Core
Title
Embedded networking using thread: devices, operating systems and IOT programming
Subject
Thread
OpenThread
IEEE 802.15.4
NCP Border Router
Internet of Things
620
Ingeniería
Description
Tesis (Master of Science in Engineering)--Pontificia Universidad Católica, 2022
Since its conception IEEE802.15.4 was designed for small, low power, low bandwidth applications
that could be used by low footprint devices. Because of its features, it is currently used
as the foundation of many internet of things (IoT) protocols. Among these protocols, Thread
stands out. Thread is a wireless communication protocol that stands out from the rest of its
predecessors, because it allows IPv6 connections natively, in this way, Thread devices have the
ability to be part of the global IP network, with all the advantages that this means. A particular
device, the Border Router, is a device that acts as a gateway, at the physical and link layer. In this
way, Thread devices that use IEEE802.15.4 can communicate transparently at the network layer
and higher layers. Currently, the Border Router has been implemented using an architecture that
uses an Network Co-Processor (NCP). The authors estimate that this architecture has several
disadvantages, therefore, a new and alternative architecture is designed, implemented and tested,
which is contrasted with the architecture that uses the NCP. As a case study, a Structural Health
Monitoring (SHM) application is presented, using the newly designed Border Router, in which
the devices are temporarily synchronized and interact with a server using User Datagram Protocol
(UDP) and Internet Protocol version 6 (IPv6) . This application was intended to be used for
parameter estimation of structural models for SHM. The results show the Border Router is superior
in latency with a small increase in the packet loss rate, however, with additional work, the
non-NCP Border Router could easily be far superior. In the SHM application, synchronization is
achieved in the range of s when measuring synchronization with the oscilloscope, however, in
practice, temporary differences in acceleration signals around milliseconds (1ms to 10ms) were
observed.
that could be used by low footprint devices. Because of its features, it is currently used
as the foundation of many internet of things (IoT) protocols. Among these protocols, Thread
stands out. Thread is a wireless communication protocol that stands out from the rest of its
predecessors, because it allows IPv6 connections natively, in this way, Thread devices have the
ability to be part of the global IP network, with all the advantages that this means. A particular
device, the Border Router, is a device that acts as a gateway, at the physical and link layer. In this
way, Thread devices that use IEEE802.15.4 can communicate transparently at the network layer
and higher layers. Currently, the Border Router has been implemented using an architecture that
uses an Network Co-Processor (NCP). The authors estimate that this architecture has several
disadvantages, therefore, a new and alternative architecture is designed, implemented and tested,
which is contrasted with the architecture that uses the NCP. As a case study, a Structural Health
Monitoring (SHM) application is presented, using the newly designed Border Router, in which
the devices are temporarily synchronized and interact with a server using User Datagram Protocol
(UDP) and Internet Protocol version 6 (IPv6) . This application was intended to be used for
parameter estimation of structural models for SHM. The results show the Border Router is superior
in latency with a small increase in the packet loss rate, however, with additional work, the
non-NCP Border Router could easily be far superior. In the SHM application, synchronization is
achieved in the range of s when measuring synchronization with the oscilloscope, however, in
practice, temporary differences in acceleration signals around milliseconds (1ms to 10ms) were
observed.
Creator
Herrera Castro, Tomás Arturo
Date
2022-10-05T17:01:34Z
2022-10-05T17:01:34Z
2019
Contributor
Núñez Retamal, Felipe Eduardo
Pontificia Universidad Católica de Chile. Escuela de Ingeniería
Rights
acceso abierto
Format
xvi, 82 páginas
application/pdf
Language
en
Type
tesis de maestría
Identifier
10.7764/tesisUC/ING/64973
https://doi.org/10.7764/tesisUC/ING/64973
https://repositorio.uc.cl/handle/11534/64973