The document outlines the handover decisions and algorithms used by Huawei Technologies, categorizing them into emergency, load, and normal handover types with specific parameters for each. It details various conditions and thresholds for executing handovers, including interference and signal quality thresholds. Additionally, it specifies parameters for inter-layer handovers and mentions restrictions on specific types of handovers such as fast-moving and AMR handovers.

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GSM900 and DCS1800
handover
Discussion

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Handover decisions based on handover algorithm
1, Emergency handover （Priority level 1）
2, Load handover （Priority level 2）
3, Normal handover （Priority level 3）

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Emergency handover （Don’t consider cell level）
TA Handover
Interference handover
Rapid level drop handover
BQ Handover

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Emergency Handover parameter and explanation
TA Handover
TA HO Allowed (YES)
TA Threshold (63)

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Emergency Handover parameter and explanation
Interference HO
Interference HO Allowed (YES)
DL Qual.Threshold (50)
UL Qual.Threshold (50)

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Emergency Handover parameter and explanation
Rapid level drop
HO
RX_Level_Drop HO Allowed (NO)
Explanation: Whether to use the emergency handover algorithm
in case the receive level of the MSs drops rapidly.

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Emergency Handover parameter and explanation
BQ handover
BQ HO Allowed (YES)
BQ HO Margin (69)

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Load Handover
support
Load Handover Support (NO)
Load Handover Support (Don’t consider Rxlevel & Rxqual)

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Normal Handover parameter and explanation
Edge HO (HO
DCSGSM)
Edge HO Allowed (YES)
Edge HO UL/DL RX_LEV
Threshold (19,25)
Handover Algorithm I Edge HO
Watch/Valid time (3,2)

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Normal Handover parameter and explanation
Level HO
(HO
GSMDCS)
1,Inter-layer HO Threshold (31)
2, Inter-layer HO hysteresis (2)
3, Adjacent Cell Inter-layer HO
Hysteresis

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Normal Handover parameter and explanation
PBGT HO
(Same level)
1, PBGT HO Allowed(YES)
2, PBGT HO Threshold (68)
3, PBGT Valid/Watch Time (4,6)

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Normal Handover parameter and explanation
MS Fast-moving
HO
MS fast moving HO Allowed (NO)
MS Fast-moving Time Threshold

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Normal Handover parameter and explanation
AMR F-H HO
1, AMR HO Allowed(Not enabled)

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