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1. Introduction

(info) Detail the approach of steps for xFAPI, OSC-DU & FlexRAN <add here> deployment

1.1) Description:
This installation and execution guide provides detailed steps and troubleshooting tips for running xFAPI in conjunction with FlexRAN, OSC DU-High, and CU_stub.

1.2) System topology

2. Minimum Requirements

(info) Detail the hardware and software requirements necessary for the installation

  • Cores: 3rd gen N series Intel CpuAccelerator : ACC100

  • RAM : 128 GB memory

  • Storage: 500 GB

  • Operating System: Ubuntu 22.04 with Real-time kernel

...

  • :

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  • Cores: 4th Gen N series Intel Cpu with Vran boost

  • RAM: 256Gi Memory

3. Installation

(info) Step step-by-step instructions for deployment

3.1) Prerequisites

Before proceeding, ensure the following dependencies are installed on your system:

  • GCC

Make sure you have GCC version 9.5 installed :

sudo apt-get install -y build-essential

gcc --version

  • LKSCTP

Install the LKSCTP library:

sudo apt-get install -y libsctp-dev

  • PCAP:

sudo apt-get install -y libpcap-dev

  • ICX :

icx (ICX) 2023.0.0 (2023.0.0.20221201)

  • Intel oneAPI :

Intel oneAPI version: l_BaseKit_p_2023.0.0.25537_offline.sh, (2023.0.0)

  • DPDK :

DPDK Configuration: Intel DPDK version 22.11.1

  • Cmake :

Recommended version of Cmake: cmake version 3.9.2

 3.2) FlexRAN

  • Clone the project repo:

    git clone https://github.com/intel/FlexRAN

  • Add the env setting script to .bashrc :

    vim ~/.bashrc

    add source /opt/intel/oneapi/setvars.sh to the script

3.3) xSM Library

  • Locate the Zip Folder:

    mv /path/to/xSM_lib.zip /desired/deployment/path/

  • Unzip the project :

    cd /desired/deployment/path/

    unzip xSM_lib.zip

3.4) OSC Du-High

First, create a directory where you will clone the O-DU High code. This folder will be referred to as <O-DU High Directory>.

mkdir <O-DU High Directory>

cd <O-DU High Directory>

  • Clone the project repo:

git clone https://github.com/o-ran-sc/o-du-l2.git

  • Navigate to the O-DU Directory

cd o-du-l2

  • Checkout the i-release Branch

git checkout i-release

  • Modify the Makefile :

Go to the /build/odu directory and make the following changes in the Makefile:

  • Copy the wls_lib folder from the O-DU PHY repository:

git clone https://github.com/o-ran-sc/o-du-phy.git

  • After cloning, copy the wls_lib folder into the O-DU L2 source directory (/o-du-l2/src/):

cp -r o-du-phy/wls_lib/ <O-DU High Directory>/o-du-l2/src/

...

  • Build O-DU High in the o-du-l2/build/odu Directory:

make clean_odu PHY=INTEL_L1 MACHINE=BIT64 MODE=TDD

make odu PHY=INTEL_L1 MACHINE=BIT64 MODE=TDD

  • Build cu_stub :

make clean_cu NODE=TEST_STUB MACHINE=BIT64 MODE=TDD

make cu_stub NODE=TEST_STUB MACHINE=BIT64 MODE=TDD

  • Copy the libxsm.so from /src/xSM_lib :

cp ../../src/xSM_lib/libxsm.so ../../bin/odu

  • Navigate to the Binary Directory:

cd ../../bin

3.5) xFAPI

  • Locate the Zip Folder:

    mv /path/to/xfapi.zip /desired/deployment/path/

  • Unzip the project :

    cd /desired/deployment/path/

    unzip xfapi.zip

step 1

Expected Result:

 3.2) step 2

Expected Result:

3.3) step 3

Expected Result:

3.4) step 4

Expected Result:

4. Post-Installation Verification

(info) Outline how to verify that the installation was successful.We can validate the installation by these points, we should have the required binaries at these places :

4.1) Flexran binary [l1app] at:

...

Step 1:

Expected Result:

4.2) xFAPI binary [xfapi_app] at :
<xFAPI_directory>/bin/xfapi_app

4.3) xSM_lib .so file [libxsm.so] at :
<xFAPI_directory>/bin/libxsm.so
<OSC_DU_high_directory>/bin/odu/libxsm.so

4.4) ODU binary [odu] at :
<OSC_DU_high_directory>/bin/odu/cu_stub

4.5) cu_stub binary [cu_stub] at :
<OSC_DU_high_directory>/bin/odu/odu

5. Setting Up The Environment

  • Step up the env. variables for FlexRAN :

cd phy/

source setupenv.sh

  • Load Env. variables for xFAPI :

cd <xfapi directory>

source loadenvvar.sh

  • Configure IPs for OSC-DU High and cu_stub :

ifconfig lo:ODU "192.168.130.81"

ifconfig lo:CU_STUB "192.168.130.82"

6. Executing Stack

The sequence of execution of binaries is:

  1. FlexRAN

  2. xFAPI

  3. cu_stub

  4. OSC DU-High

  • Executing FlexRAN :

cd FlexRAN/l1/bin/nr5g/gnb/l1

./l1.sh -xran [for radio]

./l1.sh -e [for timer mode]

  • Executing xFAPI :

cd <xFAPI_directory>/bin

./run_xfapi.sh

  • Executing cu_stub :

cd <OSC_DU_high_directory>/bin/odu/odu

./cu_stub

  • Executing DU-High :

cd <OSC_DU_high_directory>/bin/odu/odu

./odu

...

Step 2:

Expected Result:

5. Troubleshooting

(info) Provide common issues and their solutions.

  • Issue 1: Error in loading shared libraries while executing the FlexRAN
    Solution: cd phy/

    source setupenv.sh

    Issue 2: Parsing error in FlexRAN(Describe the issue.)
    Solution: Update the <version> in phycfg_xran.cfg file, located at :

    FlexRAN/l1/bin/nr5g/gnb/l1/phycfg_xran.xml

  • Issue 3: Error in loading xsm lib in xFAPI
    Solution: cd <xfapi directory>

    source loadenvvar.sh

  • Issue 4: Failed to bind the socket while executing the cu_stub
    Solution: Configure the virtual IP addresses

    ifconfig lo:ODU "192.168.130.81"

    ifconfig lo:CU_STUB "192.168.130.82"

  • NOTE: Log files can be generated in xFAPI for detailed analysis. Both horizontal and vertical logging levels can be configured in the xfapi_cfg.cfg file.

...

  • (Provide the solution.)

  • Issue 1: (Describe the issue.)
    Solution: (Provide the solution.)

6. Additional Resources

(info) List of additional documentation, links, or resources that may be helpful.

...