search

s5uishida / free5gc_ueransim_nearby_upf_sample_config

free5GC 5GC & UERANSIM UE / RAN Sample Configuration - Select nearby UPF according to the connected gNodeB
11 stars 3 forks source link

Question about the gNB1 connections. #1

Open noormohammedli opened 2 years ago

noormohammedli commented 2 years ago

Hello Sir,

Thanks for sharing this example. I have two questions:

Q1: In your example, with gNB1 the UE connect to it by running the first UE file (free5gc-ue-loc1.yaml) inside UERANSIM VM, and when the UE is connected to the gNB2 you run the second file (free5gc-ue-loc2.yaml). So, my question is, does the user lose the first connection after running the second file? or the first file (ree5gc-ue-loc1.yaml) still running until i cut the connection.

Q2: If I have sst1 and sst2 and the user connects to both of them. How can I make the UE connect to the first one and cut the connection from the second one or vice versa? So, can I use the same way that you use with gNB1 and gNB2 or there is another way to do that? If I want to edit the configuration file which files do I need to deal with inside the NFs folder in addition to the YAML file that I know about.

Regads, Noor

s5uishida commented 2 years ago

Hi @noormohammedli

Q1:

When one UE (UERANSIM) connected to both gNodeB1 and gNodeB2, IP addresses were assigned to uesimtun0 and uesimtun1 and I was able to ping with both interfaces. In addition, I do not know whether this is appropriate or not according to the 3GPP spec.

But, I don't understand the meaning of using one UE connected to two gNodeB1+AMF1 and gNodeB2+AMF2 at the same time. Does that mean the handover process? If so, probably UERANSIM does not support handover yet, so I don't think it can be confirmed.

Q2:

The configuration you are trying seems to be different from the configuration I wrote. I think it would be good to consider a different configuration without referring to my configuration.

noormohammedli commented 2 years ago

Hi @s5uishida,

Thanks for your replay, Yes, I mean the handover process.

Do you have an idea how can I deal with NSSF in (handover or Mobility ) process between the slices for one UE?

Thanks,

s5uishida commented 2 years ago

Hi @noormohammedli

I have no idea yet, but I would like to investigate how to use NSSF and PCF together.