or
or
By clicking below, you agree to our terms of service.
New to HackMD? Sign up
Syntax | Example | Reference | |
---|---|---|---|
# Header | Header | 基本排版 | |
- Unordered List |
|
||
1. Ordered List |
|
||
- [ ] Todo List |
|
||
> Blockquote | Blockquote |
||
**Bold font** | Bold font | ||
*Italics font* | Italics font | ||
~~Strikethrough~~ | |||
19^th^ | 19th | ||
H~2~O | H2O | ||
++Inserted text++ | Inserted text | ||
==Marked text== | Marked text | ||
[link text](https:// "title") | Link | ||
 | Image | ||
`Code` | Code |
在筆記中貼入程式碼 | |
```javascript var i = 0; ``` |
|
||
:smile: | ![]() |
Emoji list | |
{%youtube youtube_id %} | Externals | ||
$L^aT_eX$ | LaTeX | ||
:::info This is a alert area. ::: |
This is a alert area. |
On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?
Please give us some advice and help us improve HackMD.
Do you want to remove this version name and description?
Syncing
xxxxxxxxxx
free5GC: free the cellular core networks - Dr. Jyh-Cheng Chen
tags:
COSCUP2020
中階
RB105
歡迎來到 https://hackmd.io/@coscup/2020 共筆
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Learn More →點擊本頁上方的 開始用 Markdown 一起寫筆記!
手機版請點選上方 按鈕展開議程列表。
手機歷史演進
大哥大到穿戴式手機
手機與基地台
核心網路
中華電信建構 5G 網路花費了 73 億,其中核心網路花費了其中的 20 億。
3GPP
從 2G 到 5G 的核心網路演變史
2.5G -> 沒有明確的定義
3G -> 核心網路包含 packet switched 以及 circuit switched
3G 主要架構圖涵蓋:
radio access network
+packet switched
+circuit switched
。4G
5G
假設兩人坐在一起,並透過電信網路對話,實際路徑如下:
Person A -> 基地台 -> 核心網路 -> 基地台 -> Person B
此外,電信網路與一般網路也有本質上的差異,請見穿隧協議。
5G 應用面
Free5GC
Free5GC, Free 5 Generation Core 是一個依照 3GPP R15 標準製作的 5G 核心網路(屬於 SA 的 Core Network ),交大團隊早在 5G 標準修訂完成前就已經開始貢獻該開源專案。
延伸