Will batch bandwidth change in cluster cause interference to others?

RAN
#1

Hi Experts.

At present we have 2 carriers of L2300, 20 MHz and 10 MHz.
The EARFCN are 39300 and 39450.
We want refarming and make it to 15 + 15, new EarFCN will be 39325 and 39475.
We have 1000 sites.

So my question is: if we do this operation in batches, for e.g. in 1 batch say 250 sites, will it create interference with the existing sites?

#2

Create a buffer after 100 sites and define both (new and old earfcn) for idle and connected mode mobility.

Try to complete ASAP, because it will definately create interference!

#3
  1. It’s center freq change and affect nearby and far off site as well (eg. ducting).
  2. Do in one go preferably!
  3. Not sure of objective (many did 15+15, then reverted to 20+10 later. It’s just academic. traffic dist may seen few days not long).
  4. Many features are of 20 MHz spec based.
#4

What is reason for interference? Can you explain please?

#5

10+20 vs 15+15 frequency will overlap.

#6

No in the same cluster or circle.

I don’t know if Ducting feature works 15+15.

#7

Maybe you’re creating unnecessary speculation.

In my network we did in 7 days on 10k nodes 3 steps 2 years ago.
Now days all features working no issue.

It works.

Ducting feature is also applicable for 15 MHz.

#8

m-MIMO also works now?

#9

In Nokia RF module of mMIMO was not supporting at that time.

But after 2 month new SW release it starts supporting.

#10

:+1:t2: Is it working across OEM today in your network?

#11

Yes, it’s working fine.

#12

Hi! Once it is TDD you must be aware of interference when frequency overlaps or time desynchronizes. I’ve faced interference coming from sites 40km away in open rural area.