Randomness of RSSI value for different configurations

Hey,

I struggle with the following issue: I implement some advanced HO decision algorithm. I run two different configurations (using some 5G network) to show the difference to the default HO decision: The first runs the simulation with the default behaviour. The second configuration is basically the same, but enables the HO decision algorithm, which results in slightly different HO behaviour. Although this results in some differences in terms of the HO in both simulations, in most of the time, the UEs are attached to the same gNBs (just a few ping-pong effects are avoided). Before the first HO attempt, both simulations show the same RSSI value of the serving gNB for the UE. However, in case of the first different HO decision, the RSSI value becomes different, even in some later point in time when the UE is attached to the same gNB in both simulation runs. Thus, the RSSI becomes than quite different, although the UE is at the same position and attached to the same gNB.

I assume this has something to do with the rng configuration. I would like to achieve that the RSSI is the same when running both configurations - it should be only different for the point in time when the UE is attached to different gNBs. Is there any way to achieve this?

Reproduce the two 5G simulation configurations described in the issue and compare their RNG settings and RSSI traces around the first differing handover decision. No files or tests are named, so begin by locating the RSSI measurement and handover-decision entry points in the simulation model. Done means RSSI remains consistent when the UE is attached to the same gNB and differs only while attachments differ.