CDMA Wireless Solutions RF Optimization Guide
【名称】：CDMA Wireless Solutions RF Optimization Guide【作者】: Northern Telecom
【格式】: pdf
【页数】：200
【语言】: 英文
【摘要或目录】：
NORTHERN TELECOM CONFIDENTIAL: The information contained herein is the property of Nortel and is strictly
confidential. Except as expressly authorized in writing by Nortel, the holder shall keep all information contained herein confidential,
shall disclose it only to its employees with a need to know, and shall protect it, in whole or in part, from disclosure and dissemination
to third parties with the same degree of care it uses to protect its own confidential information, but with no less than reasonable
care. Except as expressly authorized in writing by Nortel, the holder is granted no rights to use the information contained herein.
Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant.
DMS-MTX, Helmsman, Metro Cell and Nortel Networks are trademarks of Northern Telecom. Surveyor is a trademark of Grayson
communications.
Trademarks are acknowledged with an asterisk (*) at their first appearance in the document.
About this document vii
Audience for this document vii
Related documents vii
Chapter 1
Optimization Overview and Procedures 1-1
Optimization Overview 1-1
Stages of Optimization 1-1
Pre-Commercial 1-2
Commercial Launch 1-2
System Growth and Maturation 1-2
Optimization Procedures 1-3
Entrance Criteria 1-3
Pre-Commercial 1-4
From Commercial Launch to Maturation 1-5
Exit Criteria 1-6
Chapter 2
Initial System Parameters 2-1
Types of RF Optimization Parameters 2-1
IS-95/J-STD-008 as compared to Nortel Specific 2-1
Global Parameters as compared to Sector Specific Parameters 2-1
BTS and BSC Datafill Parameters 2-2
BSC static datafill 2-3
Selector subsystem managed object 2-3
Pilot database managed object 2-15
Search Windows 2-19
Enhanced Hard Handoff Parameters 2-34
BTS static datafill 2-38
BTSC (Legacy) and BTSCallProcessing (Metro Cell) Managed Objects 2-39
FA managed object 2-44
SECTOR (Legacy) and Advanced Sector (MetroCell) Managed Object 2-46
AccessParameters: 2-58
TCC/RFU (Legacy) and PowerManagement (MetroCell) managed objects 2-73
BTS Calibration 2-75
PN Planning 2-77
CDMA CDMA Wireless Solutions RF Optimization Guide NBSS8.1
xii Contents
Co-Channel PN Interference 2-77
Adjacent Channel PN Interference 2-78
Initial Neighbor List Generation 2-79
Neighbor Configuration File, Setneighbor and Checkneighbor 2-79
Chapter 3
Data Collection 3-1
RF Performance Indicators 3-1
Frame Error Rate 3-1
Mobile Receive Power 3-1
Pilot Strength (Ec/Io) 3-1
Handset Transmit Power (TXPO) 3-2
Transmit Gain Adjust 3-2
Ew/No Setpoint 3-2
Data Collection Tools 3-2
Simulated Loading 3-3
Forward Link 3-3
Reverse Link 3-5
Drive Testing and SBS Logging 3-5
Drive Testing 3-6
Test Van RF Configuration 3-6
Shakedown 3-7
Drive Routes 3-7
Test Calls 3-8
Mobile Log Mask 3-8
SBS Logging 3-10
Selector Log Mask 3-10
Data Collection Restrictions 3-12
Logging Strategy 3-13
Drive Test Data Management 3-14
Data Transfer and Tracking 3-14
Conditional and Unconditional SBS Logging of Active Users 3-14
Data Collection Strategy 3-15
Data Quantity and Logging Duration Calculations 3-16
Conditional Logging Procedure 3-17
Creating the Log Templates 3-17
Starting and Suspending the Logs 3-18
Uploading the Logs 3-19
Copying the Logs 3-20
Terminating the Logs 3-20
Log Sizes for Different Attributes 3-21
BSM Logging Procedure using GUI 3-23
Data Management 3-24
Obtaining a Pilot Database Dump 3-24
Real-time Scripts Logging 3-24
Chapter 4
Data Analysis Procedures 4-1
Nortel Networks RF Optimizer 4-1
Input Files 4-1
411-2133-004 Preliminary 01.02 December 1999
Contents xiii
System Level Analysis (Macro) 4-1
File Level Analysis (Micro) 4-3
Datafill Audit and Shakedown 4-4
Datafill Audit 4-4
Shakedown Data Analysis 4-4
System Access 4-4
Access Failure Analysis 4-4
Access Success Rate 4-5
Access Parameter Tuning 4-6
Dropped Calls 4-6
Link Supervision 4-6
Analysis 4-6
Dropped Call Rate 4-7
RF Coverage and Handoff Control 4-8
Soft Handoff Reduction 4-11
Search Windows 4-14
SRCH_WIN_A 4-16
SRCH_WIN_N 4-17
SRCH_WIN_R 4-18
BTS AccessChannelDemodulationSearchWidth,
TrafficChannelDemodulationSearchWidth 4-18
Neighbor Lists 4-19
Performance/Trend Analysis 4-22
Per-Site Analysis 4-22
Capacity 4-24
Capacity Equations for the Reverse Link 4-24
Capacity Equations for the Forward Link 4-26
Optimizing for Forward Link Capacity 4-29
Hard Handoff (HHO) 4-30
Inter-Frequency HHO 4-30
Inter-Frequency Band HHO 4-30
Inter-System/Inter-BSC HHO and Inter-System SHO 4-31
CDMA-AMPS HHO 4-31
HHO Triggers 4-31
HHO Optimization 4-36
HHO Interaction with Traffic Distribution 4-40
Chapter 5 - Dropped Call and Access Failure Reasons and Solutions
5-1
Successful Call 5-1
Indications in Mobile Data 5-1
Analysis with Selector Logs 5-2
Access Failures and Dropped Call Reasons in Single Frequency System 5-5
Hard Handoff 5-8
External Interference 5-12
Indications in Mobile Data 5-12
Appendix A- QCP Tech Mode Screen A-1
Handset Monitor Mode A-1
CDMA CDMA Wireless Solutions RF Optimization Guide NBSS8.1
xiv Contents
Appendix B- Calculating Required Power Reduction for Unwanted PN
B-1
List of Figures
Figure 2-1Backhaul delay breakdown 2-13
Figure 4-1Neighbor List Tuning 4-20
Figure 4-2Neighbor List example 4-21
Figure 5-1Messaging Example of Successful Call 5-3
List of Tables
Table 2-1 SelectorSubSystem MO parameters (Legacy and MetroCell products) 2-4
Table 2-2 TXFrameErrCnt 2-10
Table 2-3 TXPilotGain 2-10
Table 2-4 Backhaul delay 2-14
Table 2-5 Pilot Database MO Parameters (Legacy and MetroCell products) 2-15
Table 2-6 CellType 2-19
Table 2-7 Datafill Values for Different Window Sizing 2-19
Table 2-8 Acceptable Search Window Combinations 2-20
Table 2-9 SRCH_WIN_A parameter 2-21
Table 2-10 T_TDROP parameter 2-24
Table 2-11 T_ADD_OFFSET_A 2-25
Table 2-12 T_ADD_OFFSET_B 2-26
Table 2-13 T_DROP_OFFSET_A 2-26
Table 2-14 T_DROP_OFFSET_B 2-27
Table 2-15 T_COMP_OFFSET_A 2-28
Table 2-16 T_COMP_OFFSET_B 2-28
Table 2-17 T_TDROP_OFFSET_B 2-29
Table 2-18 DELTA_3 2-29
Table 2-19 DELTA_4 2-30
Table 2-20 DELTA_5 2-30
Table 2-21 DELTA_6 2-30
Table 2-22 BeaconTargetCellIdList 2-32
Table 2-23 BorderRefPilotRTDThresh 2-33
Table 2-24 BorderTargetCellIdList 2-34
Table 2-25 EHHOTARGET_CELL 2-34
Table 2-26 BTSC MO (Legacy), BTSCallProcessing MO (MetroCell), and FA MO
parameters 2-39
Table 2-27 ChannelList parameter - 800 MHz 2-41
Table 2-28 ChannelList parameter - 1900 MHz 2-41
Table 2-29 BAND_CLASS - 800 MHz 2-41
Table 2-30 BAND_CLASS - 1900 MHz 2-42
Table 2-31 CDMA_FREQ - 800 MHz 2-45
Table 2-32 CDMA_FREQ - 1900 MHz 2-45
Table 2-33 Sector MO (Legacy) and Advanced Sector MO (MetroCell)
Parameters 2-46
Table 2-34 PagingChannel1: 2-52
Table 2-35 MAX_REQ_SEQ 2-66
411-2133-004 Preliminary 01.02 December 1999
Contents xv
Table 2-36 MAX_RSP_SEQ 2-66
Table 2-37 BASE_CLASS 2-68
Table 2-38 ExtendedNeighborList tuple 2-70
Table 2-39 ExtendedNeighborList 2-70
Table 2-40 TCC/RFU MO (Legacy) and PowerManagement MO (MetroCell)
parameters 2-73
Table 2-41 Datafill Associated with NCF File 2-80
Table 3-1 Attenuation Calculation 3-6
Table 3-2 Mobile Log Mask 3-9
Table 3-3 Selector Log Mask 3-11
Table 3-4 Logging Combinations 3-16
Table 3-5 Attribute Data Rates 3-21
Table 4-1 Acceptable Search Window Combinations 4-15
Table 4-2 Window Size Datafill 4-15
Table 4-3 Histogram Example 4-16
Table 4-4 Neighbor List Tuning Array Example 4-19
Table 4-5 Transmit Gain Adjust Analysis 4-23
Table 5-1 Access Failures 5-5
Table 5-2 Dropped Calls 5-6
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