ocn and ocp values in lte implementation

[Elen]

Hello,

I'm looking on EVENT_A3 (lte-ue-rrc.h) handling in MeasurementReportTriggering and seems that ocn and ocp values are not being taken into calculation:

double ocn = 0.0; // Ocn, the cell specific offset of the neighbour cell

double mp; // Mp, the measurement result of the PCell

double ofp = measObjectEutra

.offsetFreq; // Ofp, the frequency specific offset of the primary frequency

double ocp = 0.0; // Ocp, the cell specific offset of the PCell

...

bool entryCond = mn + ofn + ocn - hys > mp + ofp + ocp + off;

And in

ApplyMeasConfig

there is this code:

NS_ASSERT_MSG(it->measObjectEutra.cellsToAddModList.empty(),

"cellsToAddModList not supported");

I'm working on case, when I would like to use ocn to implement load balancing (switch to another ENB, due to massive amount of UE that needs handover).

According to TS 36.331 the most correct way would be to use this offset for such situation.

Could you please suggest what should be the best way to approach this - add support of these options?

Create some callback with cellsToAddModList and sent to rrc?

Thanks in advance!

BR,

Jelena

[Gabriel Ferreira]

There are many ways you can implement it. We just implemented it into NR, so you may want to take a look. https://gitlab.com/cttc-lena/nr/-/commit/4735ccfc5930ad1cc554efb9fe41708e011a9960

[Elen]

Great, thank you, Gabriel!

I have implemented ocn calculation differently already,

 but I will compare with your NR solution and consider if I need to rewrite mine. 

 

BR, 

Jelena