Have you wondered how “Things” talk to each other and the cloud? Do you understand the alternatives for conveying latency-sensitive real time data versus reliable signaling data? Building on the skills from the Sensing and Actuation course, we will explore protocols to exchange information between processors.
In this course, you will learn how VoIP systems like Skype work and implement your own app for voice calls and text messages. You will start by using the Session Initiation Protocol (SIP) for session management. Next, you will learn how voice codecs such as Adaptive Multi Rate (AMR) are used in 3G networks and use them for voice traffic in your app.
Learning Goals: After completing this course, you will be able to:
1. Implement session initiation, management and termination on your DragonBoard™ 410c using SIP.
2. Discover other users and exchange device capabilities.
3. Compare and contrast narrowband and wideband codecs and experience the voice quality differences between them.
4. Implement and demonstrate VoIP calls using the DragonBoard 410c.
Este curso faz parte do Programa de cursos integrados Internet das Coisas — IoTInternet das coisas - IoT
Internet das Coisas — IoT: tecnologias em comunicação
oferecido por
Programa de cursos integrados Internet das Coisas — IoTInternet das coisas - IoTUniversidade da Califórnia, San Diego
Programa - O que você aprenderá com este curso
Semana
114 minutos para concluir
Introduction
Welcome to the Internet of Things! Before diving into this course give us a chance to let you know what it is all about! We will walk you through a module by module outline that will give you highlights on the interesting aspects of the course.
1 vídeo (total de (Total 4 mín.) min), 1 leitura
1 vídeos
1 leituras
Course 4 Slides10min
1 hora para concluir
Terminology/Cheat Sheet (Beginner)
In this course, you will see a lot of new words and acronyms you might not be familiar with. If you feel comfortable with your knowledge of tech terminology, feel free to skip these lessons since they will not affect the overall integrity of the course. If you see something that you want to know a little more about, feel free to watch the video to gain insight on some basic concepts. We do expect you to know the majority of this material before going into the next module, we would recommend going through the lessons as a quick brush up.
14 vídeos (total de (Total 42 mín.) min), 1 teste
14 videos
Acronyms4min
Frequent Terminology2min
A look back at Lesson 146s
Introduction to Lesson 21min
Software Stack4min
Internet Protocol4min
Packet-switched Network3min
A look back at Lesson 22min
Introduction to Lesson 32min
PSTN: The Traditional Phone4min
Linphone Source Code4min
Codec Selection5min
A look back at Lesson31min
1 exercício prático
Module 1 Quiz10min
Semana
21 hora para concluir
VOIP in a Nutshell
This module will take a high level look at what VoIP is in a nutshell. Essentially, we would like to talk a little more in depth about the key terms you may have seen in module 1. We will also go over a great open source VoIP application called Linphone, and explain a variety of ways you can use this open source code to expand on a VoIP application we will be making later on in the course. We will take a look at SIP and look at some online resources that might help you to understand the inner working of VoIP.
17 vídeos (total de (Total 52 mín.) min), 1 teste
17 videos
What is VoIP?6min
Flavors of VoIP3min
VoIP: Common Applications and Fun Facts5min
A look back at Lesson 142s
Introduction to Lesson 21min
What is Linphone?5min
Linphone Features3min
Setup2min
Linphone Essentials2min
A look back at Lesson 21min
Introduction to Lesson 31min
SIP2min
Protocol Operations4min
Network Elements6min
SIP Messages2min
A look back at Lesson 31min
1 exercício prático
Module 2 Quiz10min
Semana
31 hora para concluir
Codecs
In this module our esteemed Professor Harinath Garudadri will talk about coders and decoders (Codecs). This will allow us to make better use of the communications in the data plane.We want to look at the motivation behind using Codecs, the different ways to take advantage of redundancies when using codecs and finally the ability to take advantage of different receiver / transmitter combinations. If we are able to understand the way that information is sent and received over the data plane we can create and use the right codecs.
15 vídeos (total de (Total 61 mín.) min), 1 teste
15 videos
Introduction to Lesson 11min
Why compress data?3min
Why does it work?5min
What to look for?3min
Introduction to Lesson 240s
Amplitude - Log Companding (PCM)3min
Time - Adaptive, Delta Quantization (ADPCM)4min
Frequency - ADPCM in multiple subbands (Subband ADPCM)3min
Introduction to Lesson 31min
Speech production model2min
Linear Predictive Coding of Speech6min
2G / 3G Codecs7min
Voice Quality8min
VoIP over Wireless7min
1 exercício prático
Module 3 Quiz12min
Semana
41 hora para concluir
Make your own VoIP application
The main part of this module will focus on you making your very own VoIP application on the Android operating system. In order to do this, you might have to brush up on some of the materials in Course 2. You will be required to use Android Studio to push the application onto your board. You will need to know how to use Git, adb and possibly fastboot in order to accomplish this. We will provide you with the code for your application, but remember, the code we are giving you is only a template that can be used to build a bigger and better application with a wide variety of functions. Once we have built your application and pushed it to your board, we will sit together and brainstorm everything we have seen in the last few courses and take a look at what we are now capable of building in the IoT market.
13 vídeos (total de (Total 43 mín.) min), 2 leituras, 1 teste
13 videos
SipProfile2min
SipManager3min
A look back at Lesson 11min
Introduction to Lesson 21min
Code Walkthrough7min
Deploy and Demo5min
A look back at Lesson 21min
Introduction to Lesson 31min
VoIP and the Smart Home6min
VoIP and the Smart Office3min
Mobile VoIP and EoIP3min
A look back at Lesson 31min
2 leituras
Code for the next Lesson.10min
*Extra: The analog expansion header10min
1 exercício prático
Module 4 Quiz8min
Melhores avaliações
I liked the topic of communications, I am interested in carrying out developments in IoT and intellectually explore all the components that make up the internet of things.
One of the best University Course in IoT ecosystem . I really liked the assessment of week-4, open option to write about the innovative ideas on IoT.
Instrutores
Ganz Chockalingam
Principal EngineerQualcomm Institute of Calit2, UC, San Diego
Harinath Garudadri
Associate Research ScientistQualcomm Institute of Calit2, UC, San Diego
Sobre Universidade da Califórnia, San Diego
UC San Diego is an academic powerhouse and economic engine, recognized as one of the top 10 public universities by U.S. News and World Report. Innovation is central to who we are and what we do. Here, students learn that knowledge isn't just acquired in the classroom—life is their laboratory.
Sobre o Programa de cursos integrados Internet das Coisas — IoTInternet das coisas - IoT
This Specialization covers the development of Internet of Things (IoT) products and services—including devices for sensing, actuation, processing, and communication—to help you develop skills and experiences you can employ in designing novel systems. The Specialization has theory and lab sections. In the lab sections you will learn hands-on IoT concepts such as sensing, actuation and communication. In the final Capstone Project, developed in partnership with Qualcomm, you’ll apply the skills you learned on a project of your choice using the DragonBoard 410c platform.
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