In NetSim, the default UE–BS association is based on the maximum RSRP (and handovers are triggered accordingly).
In my setup, I have an external program that:
What I would like to achieve is:
- Feed this updated mapping back into NetSim.
- Ensure that NetSim updates the UE–BS associations based on my external decision.
- Prevent NetSim from re-triggering handovers using its built-in max-RSRP rule.
My question: What is the correct way to override NetSim’s default handover mechanism so that UE–BS associations follow my external program’s decisions? Has anyone implemented such external control of associations, or can suggest the best approach to disable the built-in handover algorithm while keeping UE–BS mappings externally controlled?
You would need to turn off the A3 event based H/O in NetSim 5G. Then feed your own UE-gNB associations to NetSim either directly or via a file.
See this discussion on the 5G handover in NetSim: https://www.researchgate.net/post/How_exactly_is_the_5G_handover_simulated_in_NetSim
You can write custom code as follows:
File based association - A function that associated UEs to gNB based on an input file
When file based association is enabled, turn off the regular max SINR based Handover. If you don't turn off max SINR H/O function the UEs handed over by the file based association will handed back due per their SINRs to the BSs.
At time t, UE will decide to associate to gNB specified in file and trigger handover event. A handover interruption time can also be input via file if you want each UE sees different HIT value. NetSim by default has a common HIT value for all associated UEs "Break before Join", "Join before break" can control the data transfer during the HIT period .
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