Handover Parameter Huawei

Handover Data l Basic Handover Parameters l HO Control l Cell HO Data l Concentric Data l Filter/Penalty Data l Emergency HO Data l UTRAN FDD HO Data l UTRAN TDD HO Data l Fast HO Parameters l Enhance dual band data l 2G BA2 Table l UTRAN FDD CELL BA2 l UTRAN TDD CELL BA2

Parent topic: Cell Parameters

Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd.

Basic Handover Parameters l HO Control Switch l TA HO Watch Time(Num of MR)(0.5s) l TA HO Valid Time(0.5s) l BQ HO Watch Time(0.5s) l BQ HO Valid Time(0.5s) l HCS HO Watch Time(0.5s) l HCS HO Valid Time(0.5s) l Interfere HO Static Time(0.5s) l Interfere HO Valid Time(0.5s) l Better Cell Handover Enable l Better Cell HO Watch Time(s) l Better Cell HO Valid Time(s) l IntraCell AMR TCHF-TCHH Ho Allowed l IntraCell AMR TCHF-TCHH Traffic Threshold l IntraCell TCHF-TCHH Ho Duration(s) l IntraCell TCHF-TCHH Ho Period(s) l IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step l IntraCell AMR TCHF-TCHH Ho ATCB Adjust Step l IntraCell AMR TCHF-TCHH Ho Pathloss Threshold l IntraCell TCHF-TCHH Pathloss Offset Overlay l IntraCell AMR TCHF-TCHH Ho ATCB Threshold l IntraCell TCHF-TCHH ATCB Offset Overlay l IntraCell AMR TCHF-TCHH Ho Qual. Threshold l IntraCell TCHF-TCHH Ho Stat Time(s) l IntraCell TCHF-TCHH Ho Last Time(s) l IntraCell AMR TCHH-TCHF Traffic Threshold l IntraCell AMR TCHH-TCHF Qual Ho Allowed l IntraCell TCHH-TCHF Ho Duration(s) l IntraCell AMR TCHH-TCHF Ho ATCB Threshold

Page 1 of 215Handover Data

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l IntraCell TCHH-TCHF ATCB Offset Overlay l IntraCell AMR TCHH-TCHF Ho Pathloss Threshold l IntraCell TCHH-TCHF Pathloss Offset Overlay l IntraCell AMR TCHH-TCHF Ho Qual. Threshold l IntraCell TCHH-TCHF Ho Stat Time(s) l IntraCell TCHH-TCHF Ho Last Time(s) l IntraCell Non-AMR TCHF-TCHH Ho Allowed l IntraCell Non-AMR TCHF-TCHH Traffic Threshold l IntraCell Non-AMR TCHF-TCHH Ho Pathloss Adjust Step l IntraCell Non-AMR TCHF-TCHH Ho ATCB Adjust Step l IntraCell Non-AMR TCHF-TCHH Ho Pathloss Threshold l IntraCell Non-AMR TCHF-TCHH Ho ATCB Threshold l IntraCell Non-AMR TCHF-TCHH Ho Qual. Threshold l IntraCell Non-AMR TCHH-TCHF Traffic Threshold l IntraCell Non-AMR TCHH-TCHF Qual. Ho Allowed l IntraCell Non-AMR TCHH-TCHF Ho ATCB Threshold l IntraCell Non-AMR TCHH-TCHF Ho Pathloss Threshold l IntraCell Non-AMR TCHH-TCHF Ho Qual. Threshold l Inter-RAT Out BSC Handover Enable l Inter-RAT In BSC Handover Enable l Inter-RAT Cell Reselection Enable l Pathloss Ho. Enable l Co-BSC/MSC Adj l SDCCH HO Allowed l Intracell HO Allowed l Intracell F-H HO Allowed l Load HO Allowed l MS Fast Moving HO Allowed l Rx_Level_Drop HO Allowed l PBGT HO Allowed l Level HO Allowed l Edge Handover Allowed l BQ HO Allowed l TA HO Allowed l Concentric Circles HO Allowed l Interference HO Allowed l Edge HO UL RX_LEV Threshold l Edge HO DL RX_LEV Threshold l Edge HO Watch Time(s) l Edge HO Valid Time(s) l Edge HO Watch Time(0.5s) l Edge HO Valid Time(0.5s) l Edge HO AdjCell Watch Time(s) l Edge HO AdjCell Valid Time(s) l Edge HO AdjCell Watch Time(0.5s) l Edge HO AdjCell Valid Time(0.5s) l Layer HO Watch Time(s) l Layer HO Valid Time(s) l PBGT Watch Time(s) l PBGT Valid Time(s) l Intracell F-H HO Stat Time(s) l Intracell F-H HO Last Time(s) l F2H HO Threshold l H2F HO Threshold



l Inter-layer HO Threshold l Inter-layer HO Hysteresis l Min UP Power on HO Candidate Cell l Min DL Power on HO Candidate Cell l Quick Handover Enable l TIGHT BCCH HO Watch Time(s) l TIGHT BCCH HO Valid Time(s) l ATCBHoSwitch l Enhanced Concentric Allowed

Parent topic: Handover Data


HO Control Switch

Parent topic: Basic Handover Parameters


TA HO Watch Time(Num of MR)(0.5s)

Parameter Name HO Control Switch

Description This parameter specifies whether HO Algorithm I or HO Algorithm II is valid.

GUI Value Range [HO Algorithm I, HO Algorithm II]

Default Value HO Algorithm I

Unit None

Step -

Modification Rules None

Configuration Policy

None

Recommended Value

HO Algorithm I

Parameter Relationship

None

BSC Feature None

Parameter Class Parameters About Radio Resources

Caution None

Parameter Name TA HO Watch Time(Num of MR)(0.5s)

Description The P/N criterion must be met for triggering a TA handover. That is, the





TA HO Valid Time(0.5s)

TA handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Every 0.48s a measurement report is submitted. Therefore, the unit is 0.5s.

This parameter corresponds to N in the P/N criterion.

GUI Value Range [1,16]

Default Value 1

Unit Seconds

Step 0.5s



None

Recommended Value

1


None

BSC Feature None


Caution This parameter is valid only when the HO Control Switch is set to HO Algorithm II. This parameter is invalid when the HO Control Switch is set to HO Algorithm I.

Parameter Name TA HO Valid Time(0.5s)

Description The P/N criterion must be met for triggering a TA handover. That is, the TA handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.

This parameter corresponds to P in the P/N criterion.


Default Value 1

Unit Seconds

Step 0.5s


Configuration None





BQ HO Watch Time(0.5s)


Policy

Recommended Value

1


None

BSC Feature None



Parameter Name BQ HO Watch Time(0.5s)

Description The P/N criterion must be met for triggering a BQ handover. That is, the BQ handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.



Default Value 1

Unit Seconds

Step 0.5s



None

Recommended Value

1


None

BSC Feature None






BQ HO Valid Time(0.5s)



HCS HO Watch Time(0.5s)

Parameter Name BQ HO Valid Time(0.5s)

Description The P/N criterion must be met for triggering a BQ handover. That is, the BQ handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.



Default Value 1

Unit Seconds

Step 0.5s



None

Recommended Value

1


None

BSC Feature None



Parameter Name HCS HO Watch Time(0.5s)

Description The P/N criterion must be met for triggering a fast movement handover from a micro cell to a macro cell. That is, such a handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.






HCS HO Valid Time(0.5s)


Default Value 3

Unit Seconds

Step 0.5s



None

Recommended Value

3


None

BSC Feature None



Parameter Name HCS HO Valid Time(0.5s)

Description The P/N criterion must be met for triggering a fast movement handover from a micro cell to a macro cell. That is, such a handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.



Default Value 2

Unit Seconds

Step 0.5s



None

Recommended Value

2

Parameter None





Interfere HO Static Time(0.5s)



Relationship

BSC Feature None



Parameter Name Interfere HO Static Time(0.5s)

Description The P/N criterion must be met for triggering an interference handover. That is, the interference handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.



Default Value 3

Unit Seconds

Step 0.5s



None

Recommended Value

3


None

BSC Feature None





Interfere HO Valid Time(0.5s)



Better Cell Handover Enable

Parameter Name Interfere HO Valid Time(0.5s)

Description The P/N criterion must be met for triggering an interference handover. That is, the interference handover can be triggered only if P measurement reports among N measurement reports meet the triggering conditions. Measurement reports are submitted every 0.48s. Therefore, the unit here is set to 0.5s.



Default Value 2

Unit Seconds

Step 0.5s



None

Recommended Value

2


None

BSC Feature None


Caution None

Parameter Name Better Cell Handover Enable

Description This parameter specifies whether to enable the better cell handover algorithm.

Yes: permitted; No: not permitted

GUI Value Range [No, Yes]

Default Value Yes

Unit None

Step -





Better Cell HO Watch Time(s)



None

Recommended Value

Yes


None

BSC Feature None



Parameter Name Better Cell HO Watch Time(s)

Description The P/N criterion must be met for triggering a better cell handover. That is, such a handover can be triggered only if the triggering conditions are met for P times in N times.



Default Value 3

Unit Seconds

Step -



None

Recommended Value

3


None

BSC Feature None







Better Cell HO Valid Time(s)



IntraCell AMR TCHF-TCHH Ho Allowed

Parameter Name Better Cell HO Valid Time(s)

Description The P/N criterion must be met for triggering a better cell handover. That is, such a handover can be triggered only if the triggering conditions are met for P times in N times.



Default Value 2

Unit Seconds

Step -



None

Recommended Value

2


None

BSC Feature None



Parameter Name IntraCell AMR TCHF-TCHH Ho Allowed

Description This parameter specifies whether the BSC initiates an AMR TCHF-TCHH load handover.


Default Value No

Unit None





IntraCell AMR TCHF-TCHH Traffic Threshold

Step -



If this parameter is set to Yes, the AMR TCHF-TCHH handover algorithm is enabled and an AMR call can be handed over from TCHF to TCHH to relieve network congestion.

If this parameter is set to No, the AMR TCHF-TCHH handover algorithm is disabled and an AMR call cannot be handed over from TCHF to TCHH. Thus, network congestion cannot be relieved through TCHF-TCHH handover.

Recommended Value

None


None

BSC Feature None


Caution This parameter is available only when HO Control Switch is set to HO Algorithm II. This parameter is invalid when the HO Control Switch is set to HO Algorithm I.

Parameter Name IntraCell AMR TCHF-TCHH Traffic Threshold

Description When the load of a cell exceeds this threshold, the BSC initiates an AMR TCHF-TCHH handover.

When the load of the network exceeds this threshold, some calls may be handed over from TCHF to TCHH.


Default Value 75

Unit None

Step -



If this parameter is set to a too great value, many calls cannot be handed over from TCHF to TCHH when the load of the network increases in a short time. Thus, network congestion cannot be relieved in time.

If this parameter is set to a too small value, some calls are handed over





IntraCell TCHF-TCHH Ho Duration(s)

from TCHF to TCHH even when there is no risk of congestion, which leads to a drop in the MOS.

Recommended Value

75


None

BSC Feature None



Parameter Name IntraCell TCHF-TCHH Ho Duration(s)

Description If the load of a cell exceeds the threshold, the BSC hands over all the qualified calls in the cell from TCHF to TCHH during the time specified by this parameter.


Default Value 5

Unit Seconds

Step -



If this parameter is set to a too small value, the duration of an AMR TCHF-TCHH handover is short after the handover is triggered. Thus, few MSs can be handed over from TCHF to TCHH, and network congestion cannot be relieved in time.

If this parameter is set to a too great value, the duration of an AMR TCHF-TCHH handover is long after the handover is triggered. Thus, even the MSs on the edge of the cell are handed over from TCHF to TCHH, and the handover quality deteriorates.

Recommended Value

5


None

BSC Feature None






IntraCell TCHF-TCHH Ho Period(s)



IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step


Parameter Name IntraCell TCHF-TCHH Ho Period(s)

Description The value range of this parameter is the same as that of IntraCell TCHF-TCHH Ho Duration(s), and the value of this parameter must be smaller than that of IntraCell TCHF-TCHH Ho Duration(s).


Default Value 1

Unit Seconds

Step -



If this parameter is set to a too small value, the handover zone is enlarged in a short time, and thus many MSs are handed over from TCHF to TCHH.

If this parameter is set to a too great value, the handover zone is enlarged slowly and it takes a long time to initiate a TCHF-TCHH handover. Thus, network congestion cannot be relieved in time.

Recommended Value

1


None

BSC Feature None







IntraCell AMR TCHF-TCHH Ho ATCB Adjust Step

Parameter Name IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step

Description This parameter, along with the IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step and the time elapsing after the TCHF-TCHH handover, determines the current pass loss offset, which is used for selecting users for TCHF-TCHH handover.


Default Value 5

Unit None

Step -



None

Recommended Value

5


Path loss offset = (Time elapsing after the TCHF-TCHH handover/IntraCell TCHF-TCHH Ho Period(s) + 1) x IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step

BSC Feature None



Parameter Name IntraCell AMR TCHF-TCHH Ho ATCB Adjust Step

Description This parameter, along with the IntraCell TCHF-TCHH Ho Period(s) and the time elapsing after the TCHF-TCHH handover is triggered, determines the current ATCB offset, which is used for selecting users for TCHF-TCHH handover.


Default Value 3

Unit None

Step -






IntraCell AMR TCHF-TCHH Ho Pathloss Threshold


None

Recommended Value

3


ATCB offset = (Time elapsing after the TCHF-TCHH handover/IntraCell TCHF-TCHH Ho Period(s) + 1) x IntraCell AMR TCHF-TCHH Ho ATCB Adjust Step

BSC Feature None



Parameter Name IntraCell AMR TCHF-TCHH Ho Pathloss Threshold

Description This parameter, along with the IntraCell TCHF-TCHH Ho Period(s), time elapsing after the TCHF-TCHH handover is triggered, and IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step, determines the current pass loss.


Default Value 100

Unit None

Step -



None

Recommended Value

100


If the path loss of an MS < IntraCell AMR TCHF-TCHH Ho Pathloss Threshold + Path loss offset), then the MS meets the requirement of TCHF-TCHH handover for path loss. Here, Path loss offset = (Time elapsing after the TCHF-TCHH handover/IntraCell TCHF-TCHH Ho Period(s) + 1)/IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step.

BSC Feature None






IntraCell TCHF-TCHH Pathloss Offset Overlay



IntraCell AMR TCHF-TCHH Ho ATCB Threshold


Parameter Name IntraCell TCHF-TCHH Pathloss Offset Overlay

Description This parameter specifies the difference of pass loss between the overlaid subcell and the underlaid subcell.


Default Value 10

Unit None

Step -



None

Recommended Value

10


None

BSC Feature None



Parameter Name IntraCell AMR TCHF-TCHH Ho ATCB Threshold

Description If the ATCB of an AMR full-rate call is equal to or higher than this threshold, the call meets a condition for AMR TCHF-TCHH handover.





IntraCell TCHF-TCHH ATCB Offset Overlay


Default Value 20

Unit None

Step -



None

Recommended Value

20


None

BSC Feature None



Parameter Name IntraCell TCHF-TCHH ATCB Offset Overlay

Description This parameter specifies the ATCB difference between the overlaid subcell and the underlaid subcell.


Default Value 20

Unit None

Step -



None

Recommended Value

20


None

BSC Feature None





IntraCell AMR TCHF-TCHH Ho Qual. Threshold



IntraCell TCHF-TCHH Ho Stat Time(s)



Parameter Name IntraCell AMR TCHF-TCHH Ho Qual. Threshold

Description This parameter specifies the quality threshold for AMR TCHF-TCHH handover.


Default Value 0

Unit None

Step -



None

Recommended Value

0


If the receive quality level of an MS < IntraCell AMR TCHF-TCHH Ho Qual. Threshold, the MS meets the requirement of TCHF-TCHH handover for the receive quality. You must determine both the uplink receive quality and downlink receive quality when you use this parameter.

BSC Feature None



Parameter Name IntraCell TCHF-TCHH Ho Stat Time(s)





IntraCell TCHF-TCHH Ho Last Time(s)

Description During the time specified by this parameter, a TCHF-TCHH handover is triggered if the IntraCell TCHF-TCHH Ho Last Time(s) of a call meets the triggering conditions.

This parameter is used along with the IntraCell TCHF-TCHH Ho Last Time(s). They are equivalent to N in the P/N criterion.


Default Value 3

Unit Seconds

Step -



If this parameter is set to a too great value, it takes a long time to make a handover decision and respond the handover request. If this parameter is set to a too small value, there is no enough time to make a handover decision, which may lead to a misjudgment.

Recommended Value

3


None

BSC Feature None



Parameter Name IntraCell TCHF-TCHH Ho Last Time(s)

Description During the time specified by this parameter, a TCHF-TCHH handover is triggered if the IntraCell TCHF-TCHH Ho Last Time(s) of a call meets the triggering conditions.

This parameter is equivalent to the values of P in P/N criterion.


Default Value 2

Unit Seconds

Step -






IntraCell AMR TCHH-TCHF Traffic Threshold


If this parameter is set to a too great value, it takes a long time to make a handover decision and respond the handover request. If this parameter is set to a too small value, there is no enough time to make a handover decision, which may lead to a misjudgment.

Recommended Value

2


None

BSC Feature None



Parameter Name IntraCell AMR TCHH-TCHF Traffic Threshold

Description When the load of a cell is lower than this threshold, the BSC initiates an AMR TCHH-TCHF handover.

When the load of the network is lower than this threshold, the BSC initiates an AMR TCHH-TCHF handover. If the value of this parameter is too small, TCHH calls exist when the load of the network is light and thus the MOS may be decreased.


Default Value 15

Unit None

Step -



If this parameter is set to a too great value, an AMR TCHH-TCHF handover is triggered only when the network is overloaded, which may again lead to a risk of network congestion.

Recommended Value

15


None

BSC Feature None





IntraCell AMR TCHH-TCHF Qual Ho Allowed



IntraCell TCHH-TCHF Ho Duration(s)



Parameter Name IntraCell AMR TCHH-TCHF Qual Ho Allowed

Description This parameter specifies whether to allow an AMR TCHH-TCHF handover due to quality.


Default Value No

Unit None

Step -



If this parameter is set to Yes, a call can be handed over from TCHH to TCHF when the quality of the call is bad.

If this parameter is set to No, a call of bad quality cannot be handed over from TCHH to TCHF. Thus, the quality of the call cannot be improved.

Recommended Value

No


None

BSC Feature None



Parameter Name IntraCell TCHH-TCHF Ho Duration(s)





IntraCell AMR TCHH-TCHF Ho ATCB Threshold

Description If the load of a cell exceeds the threshold, the BSC hands over all the qualified calls in the cell from TCHH to TCHF during the time specified by this parameter.


Default Value 5

Unit Seconds

Step -



None

Recommended Value

5


None

BSC Feature None



Parameter Name IntraCell AMR TCHH-TCHF Ho ATCB Threshold

Description If the ATCB of an AMR full-rate call is lower than this threshold, the call meets a condition for AMR TCHH-TCHF handover.

The greater the ATCB value, the shorter the distance between the MS and the cell center.


Default Value 4

Unit None

Step -



If this parameter is set to a too great value, only an MS close to the cell center can be assigned TCHHs. Thus, timeslots are wasted, and network





IntraCell TCHH-TCHF ATCB Offset Overlay

congestion cannot be relieved in time.

If this parameter is set to a too small value, an MS of bad quality on the cell edge cannot be handed over from TCHH to TCHF. Thus, the quality of the call cannot be improved.

Recommended Value

4


None

BSC Feature None



Parameter Name IntraCell TCHH-TCHF ATCB Offset Overlay

Description This parameter specifies the ATCB difference between the overlaid subcell and the underlaid subcell.

This parameter, along with the IntraCell AMR TCHH-TCHF Ho ATCB Threshold, determines whether a condition for deciding a TCHH-TCHF handover is met.


Default Value 20

Unit None

Step -



If this parameter is set to a too great value, only an MS close to the overlaid subcell can be assigned TCHHs. Thus, timeslots are wasted.

If this parameter is set to a too small value, an MS of bad quality on the edge of the overlaid subcell cannot be handed over from TCHH to TCHF. Thus, the quality of the call cannot be improved.

Recommended Value

20

Parameter None





IntraCell AMR TCHH-TCHF Ho Pathloss Threshold



Relationship

BSC Feature None



Parameter Name IntraCell AMR TCHH-TCHF Ho Pathloss Threshold

Description When the path loss of an AMR full-rate call is higher than this threshold, the call meets a condition for AMR TCHH-TCHF handover.

This parameter, along with the IntraCell AMR TCHH-TCHF Ho ATCB Threshold and IntraCell AMR TCHF-TCHH Ho Qual. Threshold, determines whether to trigger an AMR TCHH-TCHF handover.


Default Value 108

Unit None

Step -



None

Recommended Value

108


None

BSC Feature None





IntraCell TCHH-TCHF Pathloss Offset Overlay



IntraCell AMR TCHH-TCHF Ho Qual. Threshold

Parameter Name IntraCell TCHH-TCHF Pathloss Offset Overlay

Description This parameter specifies the difference of pass loss between the overlaid subcell and the underlaid subcell.

This parameter, along with the IntraCell AMR TCHH-TCHF Ho Pathloss Threshold, determines whether a condition for deciding a TCHH-TCHF handover is met.


Default Value 10

Unit None

Step -



If this parameter is set to a too great value, only an MS close to the center of the overlaid subcell can be assigned TCHHs. Thus, timeslots are wasted, and network congestion cannot be relieved in time.

If this parameter is set to a too small value, an MS of bad quality on the edge of the overlaid subcell cannot be handed over from TCHH to TCHF. Thus, the quality of the call cannot be improved.

Recommended Value

10


None

BSC Feature None



Parameter Name IntraCell AMR TCHH-TCHF Ho Qual. Threshold

Description This parameter specifies the quality threshold for AMR TCHH-TCHF





IntraCell TCHH-TCHF Ho Stat Time(s)

handover.

This parameter is one of the triggering conditions. When the MS receive quality is higher than the receive quality threshold of AMR TCHH-TCHF handover, the AMR TCHH-TCHF handover is triggered. 0-7: represents the eight levels of receive quality.

The meanings of levels 0-7 are as follows:

Level 0: BER smaller than 0.2%

Level 1: BER ranging from 0.2% to 0.4%






Level 7: BER larger than 12.8%


Default Value 3

Unit None

Step -



None

Recommended Value

3


None

BSC Feature None


Caution This parameter can be configured only when HO Control Switch is set to HO Algorithm II; this parameter is invalid when HO Control Switch is set to HO Algorithm I.





IntraCell TCHH-TCHF Ho Last Time(s)

Parameter Name IntraCell TCHH-TCHF Ho Stat Time(s)

Description This parameter indicates that if the IntraCell TCHH-TCHF Ho Last Time meets the conditions for triggering AMR TCHF-TCHH handover within the IntraCell TCHF-TCHH Ho Stat. Time, the AMR TCHF-TCHH switchover is triggered.

This parameter, used with IntraCell TCHH-TCHF Ho Last Time(s), equals the N values defined in the P/N criterion. If the IntraCell TCHF-TCHH Ho Last Time meets the conditions for triggering AMR TCHF-TCHH handover within the IntraCell TCHF-TCHH Ho Stat. Time, the AMR TCHF-TCHH handover is triggered.


Default Value 3

Unit Seconds

Step -



If this parameter is set too large and thus the MS status is viewed for a long time, the AMR TCHH-TCHF handover cannot be performed immediately and the speech quality unnecessarily deteriorates.

If this parameter is set too small and thus the MS status is viewed for a short time, the AMR TCHH-TCHF handover might incur a wrong decision.

Recommended Value

3


None

BSC Feature None



Parameter Name IntraCell TCHH-TCHF Ho Last Time(s)

Description This parameter indicates that if the IntraCell TCHH-TCHF Ho Last Time meets the conditions for triggering AMR TCHF-TCHH handover within the IntraCell TCHF-TCHH Ho Stat. Time, the AMR TCHF-TCHH switchover is triggered.





IntraCell Non-AMR TCHF-TCHH Ho Allowed

This parameter, used with IntraCell TCHH-TCHF Ho Stat Time(s), equals the P values defined in the P/N criterion. If the IntraCell TCHF-TCHH Ho Last Time meets the conditions for triggering AMR TCHF-TCHH handover within the IntraCell TCHF-TCHH Ho Stat. Time, the AMR TCHF-TCHH handover is triggered.


Default Value 2

Unit Seconds

Step -



If this parameter is set too large, the MS takes a longer time to meet the conditions for triggering the AMR TCHH-TCHF handover. As a result, the AMR TCHH-TCHF handover cannot be performed immediately and the speech quality unnecessarily deteriorates.

If this parameter is set too small, the MS takes a shorter time to meet the conditions for triggering the AMR TCHH-TCHF handover. As a result, the AMR TCHH-TCHF handover might incur a wrong decision.

Recommended Value

2


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHF-TCHH Ho Allowed

Description This parameter specifies whether the non-AMR TCHF-TCHH handover is allowed.


Default Value No

Unit None

Step -





IntraCell Non-AMR TCHF-TCHH Traffic Threshold



If this parameter is set to Yes, the AMR TCHF-TCHH handover algorithm is valid, the FR and EFR services can be handed over to HR services, and the AMR TCHF-TCHH handover can alleviate network congestion.

If this parameter is set to No, the AMR TCHF-TCHH handover algorithm is invalid, the FR and EFR services cannot be handed over to HR services, and the AMR TCHF-TCHH handover fails to alleviate network congestion.

Recommended Value

No


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHF-TCHH Traffic Threshold

Description When the cell load is equal to or greater than this threshold, the BSC enables the non-AMR TCHF-TCHH handover.

When the network load is greater than this threshold, the BSC triggers the TCHF-TCHH handover.


Default Value 85

Unit None

Step -



If this parameter is set too large, the TCHF-TCHH handover is enabled only when the network is heavily loaded. If traffic is concentrated, the TCHF-TCHH handover starts late and therefore many MSs cannot be handed over to half-rate services within a short time. As a result, the network congestion cannot be alleviated.





IntraCell Non-AMR TCHF-TCHH Ho Pathloss Adjust Step

If this parameter is set too small and the TCHF-TCHH handover is enabled when the network is lightly loaded, the call will be handed over to half-rate services, which causes unnecessary decrease in the MOS of the MS.

Recommended Value

85


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHF-TCHH Ho Pathloss Adjust Step

Description This parameter, together with IntraCell TCHF-TCHH Ho Period, determines the path loss offset. Path loss offset = (TCHF-TCHH handover duration/IntraCell TCHF-TCHH Ho Period +1) x IntraCell AMR TCHF-TCHH Ho Pathloss Adjust Step If MS path loss < path loss threshold + path loss offset, you can infer that the MS meets Intracell TCHF-TCHH Ho Passloss Threshold.


Default Value 1

Unit None

Step -



If this parameter is set too large, the handover area quickly expands within a short time, which causes many MSs to enable the TCHF-TCHH handover.

If this parameter is set too small, the handover area slowly expands and therefore the MSs cannot immediately enable the TCHF-TCHH handover. As a result, the network congestion cannot be alleviated.

Recommended Value

1

Parameter None





IntraCell Non-AMR TCHF-TCHH Ho ATCB Adjust Step

Relationship

BSC Feature None



Parameter Name IntraCell Non-AMR TCHF-TCHH Ho ATCB Adjust Step

Description This parameter, together with IntraCell TCHF-TCHH Ho Period, determines the value of ATCB offset. ATCB offset = (TCHF-TCHH handover duration/IntraCell TCHF-TCHH Ho Period + 1) x IntraCell AMR TCHF-TCHH Ho ATCB Adjust Step If MS ATCB > ATCB threshold - ATCB offset, you can infer that the MS meets the ATCB threshold.


Default Value 2

Unit None

Step -



If this parameter is set too large, the handover area quickly expands within a short time, which causes many MSs to enable the TCHF-TCHH handover.

If this parameter is set too small, the handover area slowly expands and therefore the MSs cannot immediately enable the TCHF-TCHH handover. As a result, the network congestion cannot be alleviated.

Recommended Value

2


None

BSC Feature None







IntraCell Non-AMR TCHF-TCHH Ho Pathloss Threshold



IntraCell Non-AMR TCHF-TCHH Ho ATCB Threshold

Parameter Name IntraCell Non-AMR TCHF-TCHH Ho Pathloss Threshold

Description If the non-AMR full-rate speech path loss is smaller than or equal to this threshold, the MS meets the conditions for non-AMR TCHF-TCHH handover.

If MS path loss < path loss threshold + path loss offset, you can infer that the MS meets the path loss threshold.


Default Value 95

Unit None

Step -



If this parameter is set too large, the MSs at the edge of a cell are handed over to half-rate services and thus the speech quality deteriorates.

If this parameter is set too small, only the MSs at the center of a cell are handed over to half-rate services and thus the network congestion cannot be alleviated.

Recommended Value

95


None

BSC Feature None







IntraCell Non-AMR TCHF-TCHH Ho Qual. Threshold

Parameter Name IntraCell Non-AMR TCHF-TCHH Ho ATCB Threshold

Description If the non-AMR full-rate speech ATCB is larger than or equal to this threshold, the MS meets the conditions for non-AMR TCHF-TCHH handover.

If MS ATCB > ATCB threshold - ATCB offset, you can infer that the MS meets the ATCB threshold.


Default Value 30

Unit None

Step -



If this parameter is set too large, only the MSs at the center of a cell are handed over to half-rate services and thus the network congestion cannot be alleviated.

If this parameter is set too small, the MSs at the edge of a cell are handed over to half-rate services and thus the speech quality deteriorates.

Recommended Value

30


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHF-TCHH Ho Qual. Threshold

Description If the MS receive quality is smaller than the receive quality threshold, you can infer that the MS meets the receive quality threshold.


Default Value 0

Unit None





IntraCell Non-AMR TCHH-TCHF Traffic Threshold

Step -



If this parameter is set too large, the MSs that have poor speech quality at full rate meet the handover conditions but have the risk of being handed over to half-rate services with equally poor speech quality.

If this parameter is set too small, it is difficult for the MSs to meet the handover conditions and thus the network congestion cannot be alleviated.

Recommended Value

0


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHH-TCHF Traffic Threshold

Description When the cell load is equal to or smaller than this threshold, the BSC enables the non-AMR TCHH-TCHF handover.

When the network load is smaller than this threshold, the BSC hand over all half-rate MSs to full-rate services.


Default Value 25

Unit None

Step -



If this parameter is set too large, the TCHH-TCHF handover is triggered when the network is heavily loaded; therefore, the network load changes greatly and the network might be congested again.

If this parameter is set too small, the TCHH-TCHF handover is triggered when the network is lightly loaded, which causes unnecessary decrease





IntraCell Non-AMR TCHH-TCHF Qual. Ho Allowed

in the MOS of the MS.

Recommended Value

25


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHH-TCHF Qual. Ho Allowed

Description This parameter specifies whether to allow the non-AMR TCHH-TCHF handover triggered by the quality problem.


Default Value No

Unit None

Step -



If this parameter is set to Yes, the TCHH-TCHF quality handover is enabled and the poor-quality TCHH MSs can be handed over to TCHFs to ensure speech quality.

If this parameter is set to No, the TCHH-TCHF quality handover is disabled and the poor-quality TCHH MSs cannot be handed over to TCHFs to ensure speech quality.

Recommended Value

No


None

BSC Feature None


Caution This parameter can be configured only when HO Control Switch is set to HO Algorithm II; this parameter is invalid when HO Control Switch is





IntraCell Non-AMR TCHH-TCHF Ho ATCB Threshold



IntraCell Non-AMR TCHH-TCHF Ho Pathloss Threshold

set to HO Algorithm I.

Parameter Name IntraCell Non-AMR TCHH-TCHF Ho ATCB Threshold

Description If the non-AMR full-rate speech ATCB is smaller than or equal to this threshold, the MS meets the conditions for non-AMR TCHF-TCHH handover.


Default Value 14

Unit None

Step -



None

Recommended Value

14


When the ATCB of the MS is smaller than the ATCB threshold, the MS meets the conditions for TCHH-TCHF handover. This parameter, together with the path loss threshold and receive quality threshold, determines the TCHH-TCHF handover.

BSC Feature None



Parameter Name IntraCell Non-AMR TCHH-TCHF Ho Pathloss Threshold

Description If the non-AMR full-rate speech path loss is larger than or equal to this





IntraCell Non-AMR TCHH-TCHF Ho Qual. Threshold

threshold, the MS meets the conditions for non-AMR TCHF-TCHH handover.

When the MS path loss is larger than the path loss threshold, the MS meets the conditions for TCHH-TCHF handover. This parameter, together with the ATCB threshold and receive quality threshold, determines the TCHH-TCHF handover.


Default Value 103

Unit None

Step -



If this parameter is set too large, the MSs at the edge of a cell cannot meet the conditions for TCHH-TCHF handover and still stay in TCHHs, which causes unnecessary deterioration of speech quality.

If this parameter is set too small, only the MSs at the center of a cell can be handed over to TCHHs and thus the network congestion cannot be alleviated.

Recommended Value

103


None

BSC Feature None



Parameter Name IntraCell Non-AMR TCHH-TCHF Ho Qual. Threshold

Description This parameter specifies the quality threshold for non-AMR TCHH-TCHF handover.

If the MS receive quality is higher than the receive quality threshold, the MS meets the conditions for TCHH-TCHF handover.






Inter-RAT Out BSC Handover Enable


Default Value 2

Unit None

Step -



None

Recommended Value

2


None

BSC Feature None



Parameter Name Inter-RAT Out BSC Handover Enable

Description This parameter determines whether the handover from 2G cells to 3G cells is allowed.

GUI Value Range [No,Yes]

Default Value No

Unit None

Step -



None

Recommended Value

None


None

BSC Feature Handover


Caution None




Inter-RAT In BSC Handover Enable



Inter-RAT Cell Reselection Enable

Parameter Name Inter-RAT In BSC Handover Enable

Description This parameter determines whether the handover from 3G cells to 2G cells is allowed.


Default Value No

Unit None

Step -



None

Recommended Value

None


None



Caution None

Parameter Name Inter-RAT Cell Reselection Enable

Description This parameter determines whether the reselection from 2G cells to 3G cells is allowed.


Default Value No

Unit None

Step -



None





Pathloss Ho. Enable



Co-BSC/MSC Adj

Recommended Value

None


None



Caution None

Parameter Name Pathloss Ho. Enable

Description This parameter specifies whether cells are sorted by path loss in the better cell handover algorithm.


Default Value No

Unit None

Step -



None

Recommended Value

No


None

BSC Feature handover algorithm



Parameter Name Co-BSC/MSC Adj





SDCCH HO Allowed

Description This parameter specifies whether to adjust the sequence of candidate cells. After the sequence is adjusted, the handover within the same BSC/MSC takes priority.


Default Value Yes

Unit None

Step -



If this parameter is set to Yes, the target cell to which the MS is handed over may not be the cell with the best signal quality.

Recommended Value

Yes


None



Caution None

Parameter Name SDCCH HO Allowed

Description This parameter specifies whether a handover between signaling channels is enabled.


Default Value No

Unit None

Step -



When the authentication and ciphering procedures are enabled on the existing network, this parameter can be set to Yes.

Recommended Value

No


None






Intracell HO Allowed



Intracell F-H HO Allowed


Caution None

Parameter Name Intracell HO Allowed

Description This parameter specifies whether the intra-cell handover is enabled. Note: A forced intra-cell handover is not subject to this parameter.


Default Value No

Unit None

Step -



Yes for hot-spot areas; densely populated urban areas, common urban areas, suburbs, and rural areas; No for high-speed circumstances

Recommended Value

No


None



Caution When an interference handover or bad quality handover is performed, an intra-cell handover fails if this parameter is set to No.

This parameter does not affect concentric cell handovers and forced intra-cell handovers.

Parameter Name Intracell F-H HO Allowed

Description This parameter specifies whether the AMR handover is enabled. This parameter does not affect the dynamic non-AMR full-rate to half-rate handover.





Load HO Allowed

GUI Value Range [Yes,No]

Default Value Yes

Unit None

Step -



The AMR handover can be triggered only when the Intracell F-H HO Allowed parameter is set to Yes.

Recommended Value

Yes


None

BSC Feature Handover, AMR


Caution This parameter is available only when HO Control Switch is set to HO Algorithm I. This parameter is invalid when the HO Control Switch is set to HO Algorithm II.

Parameter Name Load HO Allowed

Description This parameter specifies whether a traffic load-sharing handover is enabled.

The load handover helps to reduce cell congestion, improve success rate of channel assignment, and balance the traffic load among cells, thus improving the network performance.

The load handover is used as an emergency measure instead of a primary measure to adjust abnormal traffic burst in partial areas. If load handovers occur frequently in a partial area, the cell and TRX configuration of BTSs and the network layout should be adjusted.


Default Value No

Unit None

Step -



If this parameter is set to YES, extra interference may be introduced when aggressive frequency reuse pattern is used.





MS Fast Moving HO Allowed



Recommended Value

No


None



Caution None

Parameter Name MS Fast Moving HO Allowed

Description This parameter specifies whether an MS that moves fast in a micro cell can be handed over to a macro cell. If this parameter is set to Yes, the MS that moves fast in a micro cell can be handed over to a macro cell, thus reducing the number of handovers. It is recommended that this handover be applied only in special areas such as highways to reduce the CPU load. The fast-moving micro-to-macro cell handover algorithm is used only in special conditions.


Default Value No

Unit None

Step -



It is recommended that this handover be applied only in special areas such as highways to reduce the CPU load. The fast-moving micro-to-macro cell handover algorithm is used only in special conditions.

Recommended Value

No


None



Caution None



Rx_Level_Drop HO Allowed



PBGT HO Allowed

Parameter Name Rx_Level_Drop HO Allowed

Description This parameter specifies whether to enable the rapid level drop handover. When this function is enabled, an MS can be handed over to a new cell before the occurrence call drop caused by the rapid drop of the receive level of the MS.


Default Value No

Unit None

Step -



In dual-band networking mode for densely populated urban areas, the level drops rapidly due to multiple barriers. The propagation loss of the 1800 MHz frequency band is greater than the propagation loss of the 900 MHz frequency band. Considering the preceding factors, you can enable the Rx_Level_Drop HO Allowed for the DCS1800 cell.

Under normal conditions, this parameter is set to No. To support the rapid level drop handover, the BSC must have the original MR.

Recommended Value

No


None




Parameter Name PBGT HO Allowed

Description This parameter specifies whether to enable the PBGT (POWER BUDGET) handover algorithm. Based on the path loss, the BSC uses the PBGT handover algorithm to search for a desired cell in real time and decides whether a handover should be performed. The cell must have less path loss and meet specific requirements. To avoid ping-pong handovers, the PBGT handover can be performed only on TCHs between





Level HO Allowed

the cells of the same layer and hierarchy. The PBGT handover cannot be performed on SDCCHs.


Default Value Yes

Unit None

Step -



Huawei recommends that the PBGT handover algorithm be enabled. Proper use of PBGT handovers helps to reduce cross coverage and to avoid co-channel interference and adjacent channel interference.

Recommended Value

Yes


None




Parameter Name Level HO Allowed

Description This parameter specifies whether the layered hierarchical handover is enabled. Cells are set to different layers and different priorities to implement the layered hierarchical handover. Then, based on the layers and priorities, calls are handed over to the cells with high priority (priority is related to Layer of the Cell and Cell Priority).


Default Value Yes

Unit None

Step -



The lower the layer is, the higher the priority is. The lower the hierarchy is, the higher the priority is. The layered hierarchical handover cannot be triggered if the serving cell has the highest priority in the queue or if the level of the target cell is lower than the Inter-layer HO Threshold.





Edge Handover Allowed

If this parameter is set to Yes, a call is handed over to the target cell that has a higher priority than the serving cell.

Recommended Value

Yes


None




Parameter Name Edge Handover Allowed

Description This parameter specifies whether to enable the edge handover algorithm. When an MS makes a call at the edge of a cell, the call may drop if the receive level is too low. To avoid such a call drop, an edge handover can be performed. When the UL receive level of the serving cell is lower than the Edge HO UL RX_LEV Threshold or the DL receive level of the serving cell is lower than the Edge HO DL RX_LEV Threshold, the MS is handed over to a neighbor cell.


Default Value If HO Control Switch is set to HO Algorithm I, the default value of this parameter is Yes. If HO Control Switch is set to HO Algorithm II, the default value of this parameter is No.

Unit None

Step -



Huawei recommends that this parameter be set to Yes. In other words, the edge handover algorithm is enabled.

Recommended Value

Yes


None



Caution During the edge handover, the MS can only be handed over to the cell





BQ HO Allowed



TA HO Allowed

that ranks in front of the serving cell.

Parameter Name BQ HO Allowed

Description This parameter specifies whether the bad quality (BQ) handover is enabled. Whether a BQ handover should be enabled depends on the UL and DL transmission quality (BER). When the UL signal quality or the DL signal quality exceeds the BQ handover threshold. a BQ emergency handover is performed. A rise in BER may result from too low a signal level or channel interference.


Default Value Yes

Unit None

Step -



None

Recommended Value

Yes


None



Caution During the BQ handover, an MS is preferentially handed over to a target cell. If no target cell is available, the MS can also be handed over to a channel within the serving cell on condition that the intra-cell handover is enabled.

Parameter Name TA HO Allowed

Description This parameter specifies whether the time advance (TA) handover is enabled. The TA handover determines whether the timing advance (TA) is higher than the predefined TA threshold. When the TA is higher than





Concentric Circles HO Allowed

the predefined TA threshold, a TA handover is triggered. The TA is calculated based on the distance between the MS and the BTS. The longer the distance is, the greater the TA value is.


Default Value Yes

Unit None

Step -



None

Recommended Value

Yes


None



Caution None

Parameter Name Concentric Circles HO Allowed

Description This parameter specifies whether the concentric cell handover is enabled. The concentric cell is used to achieve the wide coverage of the UL subcell and the aggressive frequency reuse of the OL subcell. The concentric cell handover can improve system capacity and conversation quality. The concentric cell handover can be classified into the UL subcell to OL subcell handover and the OL subcell to UL subcell handover.


Default Value Yes

Unit None

Step -



None

Recommended Value

Yes





Interference HO Allowed




None



Caution None

Parameter Name Interference HO Allowed

Description This parameter specifies whether the interference handover is enabled.

When the receive level is higher the receive level threshold but the transmission quality is lower than the interference handover quality threshold, the interference handover is triggered. In other words, the MS is interfered and needs to be handed over.


Default Value Yes

Unit None

Step -



None

Recommended Value

Yes


None



Caution The interference handover decision consists of the uplink interference handover decision and the downlink interference handover decision. During the interference handover, an MS is preferentially handed over to a target cell. If no target cell is available, the MS can also be handed over to a channel within the serving cell on condition that the intra-cell handover is enabled.



Edge HO UL RX_LEV Threshold


Huawei Proprietary and Confidential

Parameter Name Edge HO UL RX_LEV Threshold

Description If the UL receive level remains lower than the Edge HO UL RX_LEV Threshold for a period, the edge handover is triggered. If the PBGT handover is enabled, the relevant edge handover threshold can be decreased. If the PBGT handover is not enabled and the edge handover threshold is not properly set, cross coverage, co-channel interference, and adjacent channel interference are likely to occur. The Edge HO UL RX_LEV Threshold should be adjusted based on the handover performance statistics and the actual network performance to achieve the UL/DL balance.

The value of this parameter ranges from 0 to 63 (corresponding to -110 dBm to -47 dBm).


Default Value 10

Unit Levels

Step -



This parameter should be adjusted as required. If the Edge HO UL RX_LEV Threshold is set to a too small value, call drop may easily occur. If the PBGT handover is enabled, the relevant edge handover threshold can be decreased.

Recommended Value

The typical configurations of this parameter are as follows:

25: urban areas with PBGT handover disabled

20: suburbs with a single BTS

20: urban areas with PBGT handover enabled


None



Caution 1. Edge HO UL RX_LEV Threshold/Edge HO DL RX_LEV Threshold < UL RX_LEV Lower Threshold/DL RX_LEV Lower Threshold in Huawei II power control algorithm.

2. Edge HO UL RX_LEV Threshold/Edge HO DL RX_LEV Threshold < UL RX_LEV Lower Threshold/DL RX_LEV Lower Threshold expected in Huawei I power control algorithm.



Copyright Huawei Technologies Co., Ltd.

Edge HO DL RX_LEV Threshold



Parameter Name Edge HO DL RX_LEV Threshold

Description If the DL receive level remains lower than the Edge HO DL RX_LEV Threshold for a period, the edge handover is triggered. If the PBGT handover is enabled, the relevant edge handover threshold can be decreased. If the PBGT handover is not enabled and the edge handover threshold is not properly set, cross coverage, co-channel interference, and adjacent channel interference are likely to occur. The Edge HO DL RX_LEV Threshold should be adjusted based on the handover performance statistics and the actual network performance to achieve the UL/DL balance.

The value of this parameter ran