How to identify Secondary cells for Carrier aggregation LTE_CA, LTE_CA_NR

[HashimAli09]

I have been searching online for this and didn't find an answer, so I am opening this issue for little guidance.

I am building an application that collects signal information. I ran my application alongside Netmonster and when LTE_CA is discovered Netmonster's UI shows a Primary cell followed by some secondary cells. From Netmonster Core I get the list of cell infos, but how to Identify secondary cells which are being aggregated in LTE_CA or LTE_CA_NR.

Any links or directions will be really helpful.

[mroczis]

That's a bit complicated issue. When it comes to NetMonster there's another layer of data post-processing which brings more light to secondarily serving cells. It utilises cached cells (from log) and attempts to figure out a possibility of aggregation. Since NetMonster Core works just with non-cached data, functionalities are limited. Secondarily serving cells are marked only in NR NSA mode and on select Android versions where PhysicalChannelConfig was accessible.

[HashimAli09]

thanks

[HashimAli09]

How can PhysicalChannelConfig be used to identify secondary cell(s)?

[ArshanKhanifar]

@mroczis If it's okay with you to share, which logs exactly does Netmoster look at to make a guess about the secondary cells?

[Eimji]

#mroczis could you detail please how you get secondary cells? Is it possible to add this feature in netmonster-core?

Thanks.

[Edit July 10th]: I may understand what mroczis meant about logs and PhysicalChannelConfig... ;)