Load balance between LTE cells

4G LTE
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1

Hello dear Experts,
Please any parameter setting strategy for load balance between LTE 700 band and LTE CA 1800 band cells?
Vendor is Huawei.

L700 band cell:

image

L1800 band cell:

image

Same sector of same site.
Any advise to balance users and improve throughput?

2

What is priority mode in your case?

3

Inter frequency cell resel priority was 6 on L1800 and 7 on L700.
I have modified it to same value 6, but still same status on 700.

4

But when you change both 7… any changes observed?

5

No, I havn’t change both to 7, just to 6.

6

Ok, what is the Load Balance configuration?
It is based on idle or dedicated?

7

Idle reselect

I wanted to know if any other parameter to tune also.

8

Both layers same BW?

9

Yes, both 10M.

10

Then check below points:

  1. make sure of suitable tilt to make 1800 a little up tilted than 700 (2 degrees should be fine) to overcome higher attenuation.

  2. Open idle and connected interfreq load balance

  3. Tune MLB settings in CELLMLB family especially
    Make sure the balance mode = PRB&USER NUMBER

  4. If still not balanced, tune interfreq ho thresholds in family INTERFREQHOGROUP

11
  • Cellsubscriptioncapacity
  • Lbthreshold
  • Lbceiling
  • Qcisubscriptionquanta
12

Thanks.

Ok, thanks. Antennas already set. Will check your parameters recommendation.

13

These all Ericsson parameters…

For Huawei you can use this strategy:

14

For Huawei, it’s better to read a clear explanation at bottom of MLB feature (you even have OSS commands how to do it). In HEDEX.

15

Hi All.

I need to load balance traffic between L18 and L26/L21.

My L18 taking majority of users approx 200 active users but L26/ L21 combined carrying only 50 users

Vendor is Huawei.

16

Hello Expert

I have exactly the same challenge, between L18 and L26.

Any response about this?

Is there any reselection priority to set or tunning?

17

There is no easy answer to this I think.

You need to see your whole Idle and Connected mode mobility based on users their approximate location.

Have you got Load Balancer active and running?

What is load balancing based on RSRP, RSRQ, both?

Have you tried pushing idle traffic to L26 based on RSRP?

18

Yes, I have done that and balanced some of it.

First is to check Pcc & Scc priorities, increase the Pcc priority.

Second, inc reselection priority of cell where you want to increase traffic.

Third, check MLB settings, you can inc/dec load balancing on connected users trigger and make sure to set the weightage balancing to 100 for all carriers.

19

Okay sirs.

Well noted. Will review settings, tune as adviced and observ impact. :pray:t4::pray:t4::pray:t4: