The available EARFCN values in NS-3

[Selene]

Hello,

I want to simulate "Band:21", "name: Japan 1500" whose EARFCN value of downlink varies from 6450 to 6599 and the EARFCN value of uplink varies from 24450 to 24599 in NS-3. It is also correspondent to the values of class " src/lte/model/lte-spectrum-value-helper.cc".

But when I write the EARFCN values in an input file like " default ns3::LteEnbNetDevice::DlEarfcn "6525" " and " default ns3::LteEnbNetDevice::UlEarfcn "24525" ", the simulator doesn't work. It presents the error information like " msg="Could not set default value for ns3::LteEnbNetDevice::DlEarfcn", file=../src/core/model/config.cc, line=672
terminate called without an active exception ". I don't know why?

What's more, sometimes when I try to use the other EARFCN values, the simulator works well but at the end, all the SINR values in the file "rem.out" are 0.

Please explain the reason to me or what can I do to simulate this case.

Thank you a lot.

[Nicola Baldo]

Hi Selene,

I've checked the issue of EARFCN values for band 21, and indeed there was a bug limiting the allowed attribute settings only up to band 19.
I just fixed this in ns-3-dev: http://code.nsnam.org/ns-3-dev/rev/727fce98f147

As for the REM, I think you just need to set the attribute RadioEnvironmentMapHelper::Earfcn appropriately.

Regards,

Nicola

[Arturo González]

Hi Nicola, Selene,

I tried a simulation for band 20 after applying the correction you posted, nevertheless REM out files are empty for SINR values (at least on my setup..). I see that Selene might be experiencing a similar problem.
As a question, is there a known limitation on which bands can actually be simulated? I was interested in a suburban scenario with a 800 MHz carrier, i.e band 20, but as i mentioned, the SINR output values are all-zero. I will be very well appreciated from my side if you can confirm that further than band 19 ns-3 currently can or cannot provide REM outputs.

Best regards,

Arturo Gonzalez

[Nicola Baldo]

I tested a REM with lena-dual-stripe and a DL EARFCN of 6525, and it works correctly.
Did you set ns3::RadioEnvironmentMapHelper::Earfcn as I suggested?

[Arturo González]

Hi Nicola,

Thanks for your reply. Setting the ns3::RadioEnvironmentMapHelper Earfcn attribute to the correct EARFCN solved the issue and now there is an output.

Thank you again for the tip.

Arturo Gonzalez

Mit freundlichen Grüßen,

Arturo González

On 9 July 2013 12:10, Nicola Baldo <nba...@cttc.es> wrote:

I tested a REM with lena-dual-stripe and a DL EARFCN of 6525, and it works correctly.
Did you set ns3::RadioEnvironmentMapHelper::Earfcn as I suggested?

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[Achmad Rizal Danisya]

how about band 40 ? I'm trying to simulate TDD with 3 eNodeB in 2300 MHz, after I run it, I got 0 RSRP and SINR too

[Nicola Baldo]

I suggest to check your simulation setup as I suggested before, and possibly more. Everything needs to be consistent.