Hi Mates,
Can anyone guide me on the following query?
I have four LTE layers and one 5G (NR) layer. If two LTE layers go down while the rest remain operational, what should be the status of NR? Should it remain up or go down?
Since we define the Anchor on a site basis, how does this affect the NR layer’s behavior?
If DSS is not used, 5G should remain up as long as at least one anchor is active.
If anchoring is defined, NR will establish an ENDC session through the other two layers without any issues.
The UE might experience compatibility issues when the anchor shifts from L1800 to L800.
Ensure proper LTE-to-NR configuration, including X2 connections and neighbor settings.
Yeah, that would be the case during mobility.
Right now, I’m looking for clarity on the conditions affecting 5G being up or down.
It’s better to conduct field tests in each scenario to gather evidence.
Hmm… sure, will do.
Let’s wait for more expert insights from anyone with relevant experience or exposure. Thanks!
If anchoring is only available from the down layers, colocated ENDC cannot be established. However, if X2 is defined between neighboring LTE sites and this 5G layer, it can still be used.
In our network, we have three LTE layers (L800, L1800, L2100) and one 5G layer. If any one LTE layer goes down, there is no issue, as the remaining two layers can still access 5G.
Where is the anchoring option defined with respect to layers?
Right now, UE connections are not being considered—only the site link status needs to be evaluated.
You can define it at every cell level.
Anchoring is set at the cell level, while X2 is defined at the site level. Additionally, ENDC can be enabled or disabled at the cell level.
Yeah, that applies to ENDC for SCG configuration.
I am referring to bringing the 5G layer up.
If your equipment is capable, there should be no issue in keeping all five layers up.
If any specific layer has a problem, only that layer will go down, not the entire site.
Yes, you are right. Facing a similar issue where LTE has four layers, but three are down. LTE is up on one layer, but since the anchor is defined on the 5G layer, it is showing as down, causing all five layers to be down.
We are investigating the issue - let’s see.
Thanks for your inputs!
Which equipment are you using, and for which operator?
Can you please explain this issue again?
How do you define the anchor at the site level?
Also, what about your B1 configuration activation? For us, it is at the cell level.
