2nd carrier balancing

[paulus]

Hi all,

Is there anyone who can share traffic balancing in 2nd carrier which really gives significant result?

I have done audit parameter between F1 and F2 (same parameters), from CPICH,MaxTxPoewr, Admission control, CAC, etc.

After I observe, it seems that 2nd carrier is always more aggressive than F1..



Thanks
BR//Paul

[sekit]

Did you try some features like IF load sharing, or HSDPA load sharing?

[paulus]

Hi..

for interfreq load sharing, I have done this.

COuld u please share about HSDPA load sharing? WHich parameters should be changed?

Thanks
BR//Paul

[captain_jejemon]

try to read http://www.finetopix.com/showthread.php?28328-F1-F2-Startegy-Urgent-Answer-Needed&highlight=neighbor+strategy+f1+f2

you can use the offset 20 and -20 for F1 to F2

[paulus]

Yup, you're right. But not only by setting offset can be implemented to other cells. I've tried that. :) Some cells ok, but some not ok.

Attached list of steps I tried to balance HSDPA UE Mean Cell/HSDPA Payload.

Lately, i tried ADD UCELLDRD, still monitoring till now. I'll share later.

Note : in my case, F2 has higher traffic than F1
1. Audit parameters
2. Deactivate Loadbalancing in F1, and activate in F2
3. ActivateDRD in F2

Thanks
BR//Paul

[captain_jejemon]

Below is the strategy we used before. F1 is the priority but I think you can reverse .


After RAN engineer finishes the setup of F2 Cells, run the script below to modify parameters and add neighbor cells.




Step1: Modify parameters of cell of F1
ADD UCELLDRD:CELLID=XXXX,LDBDRDSWITCHHSDPA=ON,REDIRBANDIND=DependOnNCell;
MOD UCELLCAC:CELLID=XXXX,MAXHSDPAUSERNUM=64;


Step2: Modify parameters of cell of F2
ADD UCELLDRD:CELLID=YYYY,LDBDRDSWITCHHSDPA=ON,REDIRBANDIND=DependOnNCell;
MOD UCELLCAC:CELLID=YYYY,MAXHSDPAUSERNUM=100;
DEA UCELLHSDPA:CellId=YYYY;
MOD UCELLHSDPA:CellId=YYYY, AllocCodeMode=Automatic, HsPdschMaxCodeNum=15, HsPdschMinCodeNum=1, HsScchCodeNum=3;
ACT UCELLHSDPA:CellId=YYYY;
MOD UCELLSELRESEL:CellId=YYYY,IDLESINTERSEARCH=10;


Step3: ADD F1<->F2 interfreqncell BlindHO Neighbour Cell Relations
ADD
UINTERFREQNCELL:RNCID=1,CELLID=XXXX,NCELLRNCID=1,NCELLID=YYYY,SIB11IND=TRUE,IDLEQOFFSET1SN=20,SIB12IND=FALSE,TPENALTYHCSRESELECT=D0
,HOCOVPRIO=0,BLINDHOFLAG=TRUE,NPRIOFLAG=FALSE,INTERNCELLQUALREQFLAG=FALSE;
ADD UINTERFREQNCELL:RNCID=1,CELLID=YYYY,NCELLRNCID=1,NCELLID=XXXX,SIB11IND=TRUE,IDLEQOFFSET1SN=-
20,SIB12IND=FALSE,TPENALTYHCSRESELECT=D0,HOCOVPRIO=0,BLINDHOFLAG=TRUE,NPRIOFLAG=FALSE,INTERNCELLQUALREQFLAG=FALSE;

[rfsupp]

1 - Just use the DRD between co-sectors (same azimuth) and same frequency band (only 850 or only 2100), otherwise a lot of Physical Channel will appear because the DRD use Blind HO.

2 - If you want to balance between 850 <--> 2100, you need to adjust the coverage (Tilt) and use IdleQoffset1sn (http://127.0.0.1:52199/hedex/pages/31185611/03/31185611/03/resources/mbsc/m-para/uinterfreqncell_idleqoffset1sn.html)/IdleQoffset2sn (http://127.0.0.1:52199/hedex/pages/31185611/03/31185611/03/resources/mbsc/m-para/uinterfreqncell_idleqoffset1sn.html).

3 - Or you can LDR with Blind HO or Measurement HO(MBDR).

But DRD is very useful!!!

[paulus]

Hi all,

sorry for too late responses...

Just want to share regarding DRD setting which actually superb for re-balancing, but in negative side, it impacts to high UUfail in PS..

I wonder, if any of you notice this case after activating DRD..

See below ..

UUFAIL PS

32780

RAB PS

32781

Balancing HSDPA UE MEAN CELL:

This DRD activation impacts to PCU performance


32782


Seeing the performance above, is there some ways to still use DRD for balancing but not impacting to CSSR PS (high UU fail)

Or is there still other setting I should check?

So far, we deactivate this DRD in RNC and site, just do balancing with IdleQoffset1,2n.

Thanks
BR//PCS