GSM&DCS Handover Algorithm

APM30 introduction

GSM900 and DCS1800 handoverDiscussionHUAWEI TECHNOLOGIES CO., LTD.All rights reserved

Internal Slide title :40-47pt Slide subtitle :26-30ptColor::white Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial

www.huawei.comHUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial

Slide text :20-22ptBullets level 2-5: 18pt Color:BlackCorporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial

Top right corner for field-mark, customer or partner logotypes.

----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.1Handover decisions based on handover algorithm 1, Emergency handover Priority level 12, Load handover Priority level 2

3, Normal handover Priority level 3

HUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial



----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.2Emergency handover Dont consider cell level TA HandoverInterference handoverRapid level drop handover BQ HandoverHUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial



----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.3Emergency Handover parameter and explanationTA HandoverTA HO Allowed (YES)TA Threshold (63)




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.TA Threshold Meaning: An emergency handover is triggered when TA is greater than or equal to the value of this parameter.

TA=63, 550*63=34650m4Emergency Handover parameter and explanationInterference HOInterference HO Allowed (YES)DL Qual.Threshold (50)UL Qual.Threshold (50)

HUAWEI TECHNOLOGIES Co., Ltd.HUAWEI Confidential DLQUALIMIT: Meaning: Downlink quality threshold for emergency handover. This parameter is represented as the product of 10 and a quality level that ranges from 0 to 7. The emergency handover can be triggered only when the downlink receive quality of an MS is greater(indicate bad quality) than this threshold.

5Emergency Handover parameter and explanationRapid level drop HORX_Level_Drop HO Allowed (NO)Explanation: Whether to use the emergency handover algorithm in case the receive level of the MSs drops rapidly.

HUAWEI TECHNOLOGIES Co., Ltd.HUAWEI Confidential 6Emergency Handover parameter and explanationBQ handoverBQ HO Allowed (YES)BQ HO Margin (69)

HUAWEI TECHNOLOGIES Co., Ltd.HUAWEI Confidential BQ Margin: Meaning: If (downlink level of the neighbor cell after filtering - downlink level of the serving cell (after power control compensation)) > ((Inter-cell HO Hysteresis - 64) - BQ HO Margin + 64), the BQ handover to the neighbor cell is triggered.

7Load Handover supportLoad Handover Support (NO)Load Handover Support (Dont consider Rxlevel&Rxqual)




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.Meaning: 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.

8Normal Handover parameter and explanationEdge HO (HO DCSGSM) Edge HO Allowed (YES) Edge HO UL/DL RX_LEV Threshold (19,25)Handover Algorithm I Edge HO Watch/Valid time (3,2)




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.DL_Rx_Lev(n)>DL_Rx_Lev(s)+[Inter-cell HO Hysteresis](s->n) Serving cell: Rxlev < Edge HO Threshold following P/N rules.

9Normal Handover parameter and explanationLevel HO(HO GSMDCS) 1,Inter-layer HO Threshold (31)2, Inter-layer HO hysteresis (2)3, Adjacent Cell Inter-layer HO Hysteresis




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.Inter-layer handover threshold of the serving cell = Inter-layer HO threshold - Inter-layer HO Hysteresis; Inter-layer handover threshold of a neighboring cell = Inter-layer HO Threshold + Adjacent Cell Inter-layer HO Hysteresis - 64.

10Normal Handover parameter and explanationPBGT HO(Same level) 1, PBGT HO Allowed(YES)2, PBGT HO Threshold (68)3, PBGT Valid/Watch Time (4,6)




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.Meaning: PBGT handovers to a neighboring cell are allowed only when the downlink level difference between the neighboring cell and the serving cell is larger than this parameter. When the value of this parameter is smaller than 64, handovers to a neighboring cell with a lower level than the current serving cell are allowed.GUI Value Range: 0~127Actual Value Range: 0~127Unit: dBDefault Value: NoneRecommended Value: In densely populated urban areas, the recommended value is 68; in the suburbs, the recommended value is 72.

11Normal Handover parameter and explanationMS Fast-moving HO MS fast moving HO Allowed (NO)MS Fast-moving Time Threshold




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.MS Fast-moving Time Threshold: Meaning: A time threshold determined based on the radius of a cell and the moving speed of an MS. If the MS crosses the cell in a time period shorter than this threshold, the BSC concludes that the MS quickly passes through the cell. Otherwise, it concludes that the MS slowly passes the cell.GUI Value Range: 0~255Actual Value Range: 0~255Unit: sDefault Value: NoneRecommended Value: 15

12Normal Handover parameter and explanationAMR F-H HO 1, AMR HO Allowed(Not enabled)




----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.13Thank Youwww.huawei.comHUAWEI TECHNOLOGIES CO., LTD.All rights reserved

Internal Slide title :40-47pt Slide subtitle :26-30ptColor::white Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial

www.huawei.comHUAWEI TECHNOLOGIES CO., LTD.Huawei Confidential Slide title :32-35pt Color: R153 G0 B0Corporate Font :FrutigerNext LT MediumFont to be used by customers and partners : Arial



----------------

The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the Typesetting Standard.14

GSM&DCS Handover Algorithm

Documents

pt color

frutigernext lt mediumfont

arial slide text

pt slide subtitle

design color group

design colors

blackcorporate font

internal slide title