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Senior Member
Reputation: 491
Reduce Handover attempts
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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2011-01-17 04:36 AM
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Re: Reduce Handover attempts
I used Hierarchical handover
G9 cell layer = 3
G18 cell layer = 2
and adjust inter layer Ho threshold for control handover
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Re: Reduce Handover attempts
Originally Posted by
justdream
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"?
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)
Hope it can help you....
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Senior Member
Reputation: 491
Re: Reduce Handover attempts
Dear don_hardiawan
Do you have account at skype?
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Junior Member
Reputation: 10
Re: Reduce Handover attempts
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
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Member
Reputation: 172
Re: Reduce Handover attempts
[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
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Member
Reputation: 82
Re: Reduce Handover attempts
@ hag_enam : great explanation. btw do you have a command log to set those parameters because i'm newbie in huawei 2G
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Member
Reputation: 140
Re: Reduce Handover attempts
[QUOTE=haq_enam;126637]
Originally Posted by
don_hardiawan
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
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
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Member
Reputation: 172
Re: Reduce Handover attempts
[QUOTE=ayman.absi;128518]
Originally Posted by
haq_enam
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
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....
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Senior Member
Reputation: 491
Re: Reduce Handover attempts
[QUOTE=haq_enam;128544]
Originally Posted by
ayman.absi
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....
Dear, what's your new values?
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