How is this MOOC structured?
这个MOOC是如何构建的？
How are we going to spend the six weeks of this course?
我们将如何度过这个课程的六周？
I’ll be basing this course on the architecture of the 4G network,the LTE network with its various entities:the UE, the eNodeB, S Gateway, P Gateway, MME, HSS.
我将基于4G网络的体系结构，即具有各种实体的LTE网络：UE，eNodeB，S网关，P网关，MME，HSS。
In a certain sense, we have set the background, shown the elements and their interfaces in this first week.
在某种意义上，我们设置了背景，在第一周显示了元素及其界面。
During week 2, we’ll look at security procedures, and at the initial attachment of a UE to the network.
在第2周，我们将查看安全程序，以及UE初始连接到网络。
The exchanges we’re going to see will be principally between the terminal and the MME via the eNodeB, and between the MME and the HSS.
我们将要看到的交换主要是通过eNodeB在终端和MME之间，以及在MME和HSS之间。
There are also a few exchanges between the S‑Gateway/P‑Gateway, but most exchanges concern the terminal/MME/HSS.
S-Gateway / P-Gateway之间也有一些交换，但大多数交换涉及终端/ MME / HSS。
In week 2, we’ll see the mechanisms in place to stop just anyone accessing the network, to stop just anyone listening to what a user transmits or receives.
在第2周，我们将看到适当的机制来阻止任何人访问网络，阻止任何人听取用户传输或接收的内容。
In week 3, we’ll concentrate on a critical point of the mobile system: the radio interface.
在第3周，我们将专注于移动系统的关键点：无线电接口。
In this course, the objective is not to go into the details of the radio interface, but to present the essential elements to understand how exchanges happen between the UE and the eNodeB.
本课程中，目标不是深入了解无线电接口的细节，而是介绍了解UE和eNodeB之间如何进行交换的基本要素。
In week 4, we’ll look at how transmissions of data flows are organized with the concept of tunnels between P‑Gateway,and S‑Gateway, and eNodeB.
在第4周，我们将看看如何利用P-Gateway，S-Gateway和eNodeB之间的隧道概念来组织数据流的传输。
Week 4 will also be devoted to seeing how signaling exchanges are organized between the UE, the eNodeB, and the MME.
第4周还将致力于了解如何在UE，eNodeB和MME之间组织信令交换。
In week 5, we’ll look at how the sporadic nature of data flows is managed.
在第5周，我们将了解如何管理数据流的零星性质。
Week 4 will have enabled us to understand the concept of a tunnel, and we’ll see, in week 5, how tunnels are established and how we manage the sporadic nature of transmissions: the fact that, from time to time, my terminal is transmitting to the network because I use it and, during a long period, it is silent because it’s in my pocket.
第4周将使我们能够理解隧道的概念，我们将在第5周看到隧道是如何建立的，以及我们如何管理传输的零星性质：我的终端有时不时 因为我使用它而传输到网络，并且在很长一段时间内，它是沉默的，因为它在我的口袋里。
In week 6, we’ll look at mobility:mobility when I’m not using my terminal but it’s turned on and, mobility when I’m making exchanges.
在第6周，我们会考虑移动性：当我不使用终端时的移动性，但是当我进行交换时，它已经开启，移动性。
For example, I watch a video and at the same time I move, from the coverage of one base station to the coverage of another base station.
例如，我观看视频，同时移动，从一个基站的覆盖范围到另一个基站的覆盖范围。
This is what we call the handover.
这就是我们所说的移交。
We’ll see, in week 6, both the location management mechanisms and the handover mechanisms.
在第6周，我们将看到位置管理机制和切换机制。
This is an exciting program that will enable us to really understand how a 4G network works.
这是一个激动人心的计划，使我们能够真正了解4G网络的运作方式。
转载于:https://www.cnblogs.com/sec875/articles/9865097.html
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