Dear Huawei Guys,
what's the best parameter to tune if you would like to reduce the handover attempts from GSM cell to DCS cell "co-cell"?
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Dear Huawei Guys,
what's the best parameter to tune if you would like to reduce the handover attempts from GSM cell to DCS cell "co-cell"?
I used Hierarchical handover
G9 cell layer = 3
G18 cell layer = 2
and adjust inter layer Ho threshold for control handover
Dear Friend,..Quote:
Originally Posted by justdream
I usual adjust this parameter to reduce HO attempt from GSM to DCS or vice versa... :
After Make Layering different for GSM and DCS, example DCS Cell Layer : 2
and GSM Cell Layer : 3
Adjust some parameter :
1. Min UP/DL Power on HO Candidate Cell (HO Data)
2. Inter-layer HO Threshold / Hysteresis (HO Data)
3. Min Access Level Offset (adjacent Cells)
4. Inter-layer HO Hysteresis (on adjacent Cells)
Hope it can help you....
Dear don_hardiawan
Do you have account at skype?
Hi All,
HOW to improve IRAT-PS for cells which are having good IRAT CS.
anything on parameter setttings. we cannot change 2D and 2F event it should remain constant.
thanks in advance
[QUOTE=don_hardiawan;112807]Dear Friend,..
I usual adjust this parameter to reduce HO attempt from GSM to DCS or vice versa... :
After Make Layering different for GSM and DCS, example DCS Cell Layer : 2
and GSM Cell Layer : 3
Adjust some parameter :
1. Min UP/DL Power on HO Candidate Cell (HO Data)
2. Inter-layer HO Threshold / Hysteresis (HO Data)
3. Min Access Level Offset (adjacent Cells)
4. Inter-layer HO Hysteresis (on adjacent Cells)
I am having problem while handover from DCS to GSM... DCS RXlev -90 and Quality is Bad(7) and GSM -66 no Handover occur... No congestion in the GSM. Call droped then go to GSM.. HO relation defined.
GSM to DCS hO no problem...
Parameters for DCS Cells(layer 2)
1. Min UP/DL Power on HO Candidate Cell --0/8
2. Inter-layer HO Threshold / Hysteresis --30/2
3. Min Access Level Offset -----10
4. Inter-layer HO Hysteresis (on adjacent Cells)
Parameters for GSM Cells(layer 3)
1. Min UP/DL Power on HO Candidate Cell --0/8
2. Inter-layer HO Threshold / Hysteresis --5/2
3. Min Access Level Offset -----0
Pls provide the solution if u know about that
@ hag_enam : great explanation. btw do you have a command log to set those parameters because i'm newbie in huawei 2G
[QUOTE=haq_enam;126637]Quote:
Originally Posted by don_hardiawan
I'm not sure, I think the problem with the setting: 2. Inter-layer HO Threshold / Hysteresis --30/2, HO will not occur from DCS to GSM till GSM level is greater than (-90 - Inter-layer HO Threshold - Hysteresis) which is -58
So decrease the value of Inter-layer HO Threshold
[QUOTE=ayman.absi;128518]Quote:
Originally Posted by haq_enam
Problems are being solved.... Actually P/N criteria did match that is the reasons not to make HO to outdoorc cells.... We reduced No of sample of MR and reduce timer to make decesion.... I hope it will help to others....
[QUOTE=haq_enam;128544]Dear, what's your new values?Quote:
Originally Posted by ayman.absi
Optimization document
Yup, I agree with you :)Quote:
Originally Posted by jukreew
[QUOTE=haq_enam;128544]HiQuote:
Originally Posted by ayman.absi
but the default values of P/N criteria for HCS handover (layer handover ) are already have logical values ( 1.5 sec/1 sec) so how could this short time cause handover delay and call drop ??? unless u have setting different than default
also the parameter Inter layer handover thresholds is set to 30 in DCS which means that for any Rxlev < -78 dB the priority setting in (GSM-->layer 3 and DCS-->layer 2) is not considered in neighbor selection algorithm , so the mobiles should make handover to 900 directly because 900 always have stronger levels.
can u give more explanation about your solution in this case??