Problems with colosseum-near-rt-ric image

[Qiao Wang]

Hello researchers,

I'm a new user of Colosseum and recently join this group. 

I tried to run an experiment with 3x SRNs (1x scope with e2 + 1x coloran-near-rt-ric + 1x scope UE), which is basically the tutorial 4G srsRAN with SCOPE and O-RAN near-RT RIC provided by OpenRANGym. It looked like though the SRN which loaded coloran-near-rt-ric image didn't work properly. It doesn't have the setup-scripts directory. Could anyone here help look into this? Thanks!

[Cleverson Nahum]

Hello Wang,

You may try using the image `coloran-near-rt-ric-prebuilt` to the near-RT RIC.

Best regards

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[Qiao Wang]

Hello Cleverson,

Thanks. But I actually tried both versions and got the same outcome. 

[Bonati, Leonardo]

Hello, did you try to look in the directory “radio_code/colosseum-near-rt-ric” or similar?

 

--

 

Leonardo Bonati

Associate Research Scientist

Institute for the Wireless Internet of Things

Northeastern University, Boston, MA

 

web: bonati.xyz

web: northeastern.edu/wiot

 

From: 'Qiao Wang' via Colosseum Users <colosse...@googlegroups.com>
Date: Thursday, September 21, 2023 at 2:52 PM
To: Colosseum Users <colosse...@googlegroups.com>
Subject: Re: [Colosseum-Group-Message] Problems with colosseum-near-rt-ric image

Hello Cleverson,

 

Thanks. But I actually tried both versions and got the same outcome. 

 

On Thursday, 21 September 2023 at 13:48:57 UTC+1 Cleverson Nahum wrote:

Hello Wang,

 

You may try using the image `coloran-near-rt-ric-prebuilt` to the near-RT RIC.

 

Best regards

 

On Thu, Sep 21, 2023 at 9:45 AM 'Qiao Wang' via Colosseum Users <colosse...@googlegroups.com> wrote:

Hello researchers,

 

I'm a new user of Colosseum and recently join this group. 

 

I tried to run an experiment with 3x SRNs (1x scope with e2 + 1x coloran-near-rt-ric + 1x scope UE), which is basically the tutorial 4G srsRAN with SCOPE and O-RAN near-RT RIC provided by OpenRANGym. It looked like though the SRN which loaded coloran-near-rt-ric image didn't work properly. It doesn't have the setup-scripts directory. Could anyone here help look into this? Thanks!

 

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[Qiao Wang]

Thanks for your advice. Bonati. My reservation was closed but I will give it a go again today. I do remember, though, that I went to "radio_code/colosseum-near-rt-ric" but didn't manage to cd into it. Anyway, I'll try the prebuilt image today and experiment it again. 

[Cleverson Nahum]

Hello,

Some time ago I tried to organize the steps to execute a scenario with/without RIC in the attached pdf. That may help you.

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[Qiao Wang]

Hi Cleverson, 

Thank you so much for sharing. I believe it will be useful. 

Just a quick update. I have found the setup-scripts of Col-oran RIC, thanks to Bonati's advice. However, I did find a few errors when I was setting up the scope BS and UE and a bit confusing to work on scope with or without RIC. Therefore, I feel your sharing looks like something helpful I can follow. 

[Qiao Wang]

Thanks for your summarized guide, Cleverson. It's been very useful!

I tried to reproduce scope only usecase with 4 SRNs. However, it seemed that the UEs were attaching but didn't find available cell. Please take a look at the screenshot below. SRN33 is my SCOPE BS. Do you or anyone else in this group know what caused this, please?

On Friday, 22 September 2023 at 12:03:34 UTC+1 Cleverson Nahum wrote:

[Cleverson Nahum]

Hello Wang,

I just noted the PDF I sent you was missing the config file you should use for the UEs and BS (it's a problem with the annotation software I use). I attached a figure repeating the tutorial information (in case my PDF exporter messed up with some other info). You can use the following in `radio_interactive.conf` config file:
```
{
"capture-pkts": "False",
"colosseumcli": "True",
"iperf": "True",
"users-bs": "3",
"write-config-parameters": "True",
"network-slicing": "True",
"global-scheduling-policy": "0",
"slice-scheduling-policy": "[1, 1, 1]",
"tenant-number": "3",
"slice-allocation": "{0: [0, 5], 1: [6, 11], 2: [12, 16]}",
"slice-users": "{0: [3, 6, 9, 14, 17, 20, 25, 28, 31, 36, 39, 42], 1: [4, 7, 10, 15, 18, 21, 26, 29, 32, 37, 40, 43], 2: [2, 5, 8, 11, 13, 16, 19, 22, 24, 27, 30, 33, 35, 38, 41, 44]}",
"custom-ue-slice": "True",
"force-dl-modulation": "False",
"heuristic-params": "{'buffer_thresh_bytes': [1000, 2000], 'thr_thresh_mbps': [0.25, 0.75]}",
"bs-config": "{'dl_freq': 980000000, 'ul_freq': 1020000000, 'n_prb': 50}",
"ue-config": "{'dl_freq': 980000000, 'ul_freq': 1020000000, 'force_ul_amplitude': 0.9}"
}
```

I don't remember well the default values for this config file, so I may have changed some values to make it work in my setup/tutorial and that can be the reason why it is not working for you right now (since you are probably using the default config file).

Regards,

Cleverson Nahum.

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[Qiao Wang]

Hi Cleverson,

Thank you very much. You were right. I used the default config file for the SRNs. 

It is confusing to me why the default file didn't work but I'll compare your config file with the default one to see what the differences are. Thanks.