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README.md

Installation and deployment of 5G Core (5GC) of Open Air Interface (OAI)

Objectives

  • Install and configure the 5GC of OAI in a virtual machine Ubuntu 20.04 LTS (Focal Fossa)
  • Deploy 5GC Core
  • Inspec 5G Core Docker containers by means of command line instructions
  • Install and configure Portainer tool
  • Inspec 5G Core Docker containers by means of Portainer browser

Minimum hardware requirements for OAI UE, according to doc/NR_SA_Tutorial_COTS_UE.md · develop · oai / openairinterface5G · GitLab (eurecom.fr):

  • Ubuntu 20.04.5 LTS;
  • CPU: 4 cores x86_64;
  • 8 GB RAM.

Minimum hardware requirements for OAI 5GC and OAI gNB, according to doc/NR_SA_Tutorial_COTS_UE.md · develop · oai / openairinterface5G · GitLab (eurecom.fr):

  • Ubuntu 20.04.5 LTS;
  • CPU: 8 cores x86_64 3.5 GHz;
  • 32 GB RAM.

However, if you do not have such hardware specifications, you may use the one below for both devices (tested for us, you may face some lags, but it works):

  • Ubuntu 20.04.5 LTS;
  • CPU: 4 cores x86_64;
  • 4 GB RAM.

5GC Installation

In a Linux Terminal, follow the steps below:

Step 0: Setup your VM or Baremetal Machine, after install Useful Software:

sudo su

apt update -y

apt upgrade -y

apt install -y python3-pip git curl cmake tree golang vim net-tools build-essential nfs-common openssh-server

Step 1: Install dependencies

sudo apt-get install ca-certificates

sudo apt-get install curl

sudo apt-get install gnupg

sudo apt-get install lsb-release

Step 2: Enable packet forwarding

sudo sysctl net.ipv4.conf.all.forwarding=1

sudo iptables -P FORWARD ACCEPT

Step 3: Install docker and docker-compose

sudo rm /etc/apt/sources.list.d/docker.list*

sudo mkdir -p /etc/apt/keyrings

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo chmod a+r /etc/apt/keyrings/docker.gpg

sudo apt-get update

sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

sudo curl -L https://github.com/docker/compose/releases/download/1.29.2/docker-compose-`uname -s-uname -m` -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

Step 4: Clone OpenAirInterface 5G Core repository

git clone https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-fed.git

cd oai-cn5g-fed

git checkout slicing-spring-of-code

5G RAN Installation

Objectives

  • Install and configure the OAI gNB
  • Deploy a gNB together a previous configured 5GC
  • Inspect gNB status in 5GC Core

gNB Installation

To install OAI RAN 5G, go back for /home/your user and follow this tutorial.

Step 0: go back to /home/your user. In a Linux Terminal, type:

sudo su

cd /home/your user

5G RAN Installation

Step 1: Install dependencies

sudo add-apt-repository ppa:ettusresearch/uhd

sudo apt-get install libuhd-dev uhd-host -y

sudo apt-get install libuhd4.6.0 -y

sudo apt-get install ccache -y

sudo apt-get install net-tools

Step 2: Fix problem in the libuhd. When you run the commands below, if you get the error "cannot access archive", you can continue to the next step. sudo dpkg -i --force-overwrite /var/cache/apt/archives/libuhd4.6.0_4.6.0.0-0ubuntu1~focal1_amd64.deb

Step 3: Clone OpenAirInterface 5G RAN repository

git clone https://gitlab.eurecom.fr/oai/openairinterface5g.git cd /home/your user/openairinterface5g

git checkout slicing-spring-of-code

Step 4: Run the installation script

source oaienv

cd cmake_targets

sudo ./build_oai -I

sudo ./build_oai -I --install-optional-packages

sudo ./build_oai -w USRP --ninja --gNB --eNB --UE --nrUE -C --build-lib "uescope nrscope telnetsrv"

RIC Installation (FlexRIC)

Objectives

  • Install and configure the gNB and FlexRIC

To install OAI FlexRIC, go back to /home/your user and follow this tutorial.

Step 0: go back to /home/your user. In a Linux Terminal, type:

sudo su

cd /home/your user

Step 1: Install dependencies:

sudo apt-get install -y autotools-dev automake g++ make libpcre2-dev byacc cmake python3-dev libsctp-dev pcre2-utils bison

Step 2: Install swig:

git clone https://github.com/swig/swig.git

cd swig

git checkout release-4.1

./autogen.sh

./configure --prefix=/usr/

make -j8

sudo make install

Step 3: Clone FlexRIC repository:

git clone https://gitlab.eurecom.fr/mosaic5g/flexric flexric

cd flexric/

git checkout slicing-spring-of-code

Step 4: Build FlexRIC:

mkdir build && cd build && cmake .. && make -j8

sudo make install

Deployment

For this task, open another terminal using crtl+Alt+T.

Step 1: Core deployment

cd /home/your user/oai-cn5g-fed/docker-compose

sudo python3 core-network.py --type start-basic --scenario 1

Expected result:

After running the above command, nine containers are expected to be in the "Up (healthy)" state as shown in figure below.