GUL Co.Site Neighbors

**justdream** · 2017-02-17, 10:27 AM

Dears,

Could you help please?
LTE Co.Site Neighbors for reselection is confusing me
From 2G/3G to LTE shall we define all Co.site cells or 1 or 2 cells for each different carriers is enough

and same question from LTE to 2G/3G

Could you share 1 case with script "Huawei of course"

**Finetopix** · 2017-02-17 10:27 AM

**coach** · 2017-02-21, 07:12 AM

Hi,

For the 3G to LTE part, configuring the target frequency is enough for reselection, there is no need to specify the neighbor cells (though I think doing it like this slightly increases the cell reselection time, I haven't tested this in the field). Find below an example script:

//Enable SIB 19 Broadcast
MOD UCELLSIBSWITCH: CellId=12345, SibCfgBitMap=SIB19-1;
//Configure UTRAN priority for reselection (should be lower than LTE)
MOD UCELLSELRESEL: CellId=12345, Spriority=4;
//Add LTE Frequency with higher priority, notice that NPriority=6 in this example, which has higher priority. Note that only the target frequency is configured, no neighbor cell.
ADD UCELLNFREQPRIOINFO: CELLID=12345, EARFCN=1300,NPRIORITY=6,SUPCNOPGRPINDEX=FALSE,BLACKLSTCELLNUMBER=D0,RSRQSWITCH=FALSE;

From LTE to 3G, at least configure the co-site cells. If LTE coverage is not continuous, you should configure inter-rat neighbors to provide service continuity.

//Add Utran Neighbor Frequency
ADD UTRANNFREQ: LOCALCELLID=1,UTRANDLARFCN=412,UTRANVERSION=HSPA,UTRANFDDTDDTYPE=UTRAN_FDD,UtranUlArfcnCfgInd=NOT_CFG, CellReselPriorityCfgInd=CFG, CellReselPriority=4,ConnFreqPriority=4;
//Add external UTRAN cell
ADD UTRANEXTERNALCELL:MCC="XXX",MNC="YYYY",CELLID=12345,UTRANDLARFCN=0,UTRANULARFCNCFGIND=NOT_CFG,RNCID=0,RACCFGIND=CFG,RAC=0,PSCRAMBCODE=0,LAC=0;
//Add Blind Handover NR (for co-sector only)
ADD UTRANNCELL: LOCALCELLID=1,MCC="XXX",MNC="YYY",CELLID=12345,RNCID=0,BLINDHOPRIORITY=32;

Hope this helps,

Regards,