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OCUDU ZeroMQ (ZMQ) Setup Guide

This guide outlines the steps to run an end-to-end 5G network simulation using OCUDU, a containerized 5G Core (5GC), and the srsRAN 4G UE over a ZeroMQ simulated radio interface.

1. Start the 5G Core (5GC)

First, initialize the 5GC using Docker Compose.

Navigate to your configuration directory and bring up the container in detached mode:

cd ~/ocudu-config/
docker compose up -d 5gc

Note on Subscriber Provisioning: To add new subscriber UE credentials, edit the following file before or during your testing:

  • open5gs/subscriber_db.csv

2. Compile and Start OCUDU

Ensure you have compiled the OCUDU binaries. For detailed build instructions, refer to the OCUDU Installation Guide.

Once built, the resulting executables will be located in ocudu/build/apps/.

Start the OCUDU components in the following order. It is recommended to run each of these commands in a separate terminal window:

Start the Central Unit (CU):

sudo ./ocu -c ~/ocudu-config/zmq_config/cu.yml

Start the Distributed Unit (DU):

sudo ./odu -c ~/ocudu-config/zmq_config/du_zmq.yml

Alternatively, you may also run the CU in split mode:

Start the CU Control Plane (CU-CP):

sudo ./ocucp -c ~/ocudu-config/zmq_config/cu_cp.yml

Start the CU User Plane (CU-UP):

sudo ./ocuup -c ~/ocudu-config/zmq_config/cu_up.yml

3. Compile and Start srsRAN UE

Next, build the srsRAN UE. You can follow the specific steps outlined in the srsRAN UE Tutorial.

Once the UE is compiled, navigate to the executable directory and launch it:

cd srsRAN_4G/build/srsue/src
sudo ./srsue ~/ocudu-config/zmq_config/ue_zmq.yml