Getting Started with InterDigital 5G NR Performance System

Prerequisites

Resources required

2 COSMOS compute server or 2 nodes in ORBIT SB1.

Execution

Prepare the nodes

Configure Routing on compute nodes

• Execute NR gNB setup script on srv3-lg1

  userid@console:~$ ssh root@srv3-lg1.sb1.cosmos-lab.org
  root@srv3-lg1:~$ cd /home/native/NR/scripts
  root@srv3-lg1:/home/native/NR/scripts# ./setup_bs.sh
  

• Execute NR UE setup script on srv4-lg1.

  userid@console:~$ ssh root@srv4-lg1.sb1.cosmos-lab.org
  root@srv4-lg1:~$ cd /home/native/NR/scripts
  root@srv4-lg1:/home/native/NR/scripts# ./setup_ue.sh
  

Start modem executables

• SSH to the gNB MPU from “srv3-lg1.sb1.cosmos-lab.org”

  root@srv3-lg1:~# ssh root@192.168.1.2 
  (when prompted for a password use: root)
  Start the NR gNB L1 & L23 executables
  root@NR-SW-MPU:~# ./start_all.sh
  

• SSH to the UE MPU from “srv4-lg1.sb1.cosmos-lab.org”

  root@srv4-lg1:~# ssh root@192.168.2.3 
  (when prompted for a password use: root)
  Start the NR UE L1 & L23 executables
  root@NR-SW-MPU:~# ./start_all.sh
  

The NR Platform will automatically “connect” a link between the gNB and UR. This can be verified via the NR GUI

Halt the modem executables

The L1 executable should be stopped before terminating the L23 executable

root@NR-SW-MPU:~# ./stop_L1.sh

In the session used to initially start the executables (gNB or UE) enter “ctrl C” to stop the L23 executable

NR GUI Setup & Instructions

Note that the GUI web server has already been started during Linux startup.

!!!!! ADD INstructions for ssh tunneling and/or VPN !!!!

Sending iperf data between the gNB and UE

The following commands are provided as an example of how to send Downlink iperf data traffic on the NR 28GHz mmW OTA link via the compute machines that are attached to the gNB and UE platforms

• Open the 3rd “srv4-lg1” console session to the UE

  console> ssh root@srv4-lg1.sb1.cosmos-lab.org
  root@srv4-lg1:~#iperf3 -s -i 1
  

• Open the 3rd “srv3-lg1” console session to the gNB

  console> ssh root@srv3-lg1.sb1.cosmos-lab.org
  root@srv3-lg1:~# iperf3 -c 192.168.2.4 -i 1 -u -b 86M -l 1472 -t 3600
  

Analyze the NR link performance via the NR GUI