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# System prepended metadata

title: Network Slicing Call Flow
tags: [Study Notes]

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---
tags: Study Notes
title: Network Slicing Call Flow
---
# Network Slicing Call Flow

[TOC]

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#### Goal
:::info
The goal of this project is to find the network slicing procedure in the open source "free5Gc".

The following are the questions I want to be able to answer through this project:

- How is slicing configured in free5Gc, specifically in the NSSF?
- How are parameters such as latency, bandwidth, traffic, and other QoS, configured through out free5Gc?
- Is slicing in free5Gc only avaiable if the UE requests it?
:::

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#### Testing Enviroment
:::info
i7-8550U | 8GB 2400Mhz | Windows 10
Oracle VirtualBox 6.1.26
Ubuntu Server 20.04.2 LTS
Kernel 5.4.0-81-generic
free5Gc v3.0.5
Go v1.17
:::

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#### Procedure
:::info
Following the goal of finding the network slicing protocol in free5gc, the project will be to flag the sub-functions in the core network and trace the flags to eventually make a call flow. Since free5gc is coded mostly using Go, I will add a print command to each sub-function in the core network. The Go line that will be used is: fmt.Println(""). Using the format of "Kenny.[functionname]", I can then filter for sub-functions and then compile it into a document. After compiling, I will examine and create a call flow using this data.
:::

:::info
How will I edit each file?

From my test environment (Ubuntu), I will use the nano command and edit each file manually. After editing the files, I will have to run the commands:

&nbsp;&nbsp;cd ~/free5gc
&nbsp;&nbsp;make

To rebuild free5gc with the edited code.
:::

:::info
Tracking and Managing

There are a lot of code files in free5gc and I will have to make a create a checklist for every code that I edited. I have done this by putting the free5gc source code through SourceInsight, which gave me a list of all the source codes. I will put this list in a spreadsheet for a checklist.
:::

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#### Source Code Checklist
<iframe src="https://docs.google.com/spreadsheets/d/e/2PACX-1vTf9GlA1nSrWwiHYUooPcBU0mbkITI6hB0sHPTa3qIzODBh4WnaT62QxgfC5BSX67B287NglMVawy8G/pubhtml?gid=0&amp;single=true&amp;widget=true&amp;headers=false" width = 100% height = 600 ></iframe>

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#### Result

coming soon


