Lucent 资料： Wireless Network Systems CDMA 3G1x RF Engineering Guidelines

yhyang

C O N T E N T S
v i i
Lucent Technologies - Proprietary
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1 Discussion of CDMA 3G/1x RF Engineering
Overview 1
Capacity and Coverage for Voice Applications 4
Spectrum Requirements 4
Link Budgets 4
Voice Capacity 5
RF Engineering for Data 6
Introduction 6
Traffic Theory 7
Data Link Budget 8
Resource Management 9
Deployment 10
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2 Voice Coverage/Capacity/Link Budget
Overview 1
Analysis 3
Reverse Link 3
Solution--Exact 5
Solution--Approximate 8
Link Budget 13
Forward Link 19
Solution—Exact 20
Solution—Approximate 25
Link Budget 30
Other Link Budget Analyses 34
Symmetric 35
Monte Carlo 42
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C O N T E N T S
v i i i
Lucent Technologies - Proprietary
See Notice on first page
401-614-040
Issue 1, June 2001
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3 RF Engineering for Data
Overview 1
Traffic Theory 3
Introduction 3
General Erlang Model 4
Special Cases: Erlang B and Erlang C 8
Applications of Erlang C to 3G1x Data 10
Data Capacity 14
Introduction 14
Estimation of Data Capacity 16
Data Link Budgets 21
Reverse Link 21
Forward Link 25
Symmetric Forward Data Link Analysis 26
Monte Carlo Forward Link Analysis 40
Resource Management: RF Scheduling 41
Introduction 41
Scheduling Algorithms 41
Fundamental Channel (FCH) Assignment and Release 41
FCH Assignment 42
Active-to-Dormant Transition and FCH Release 43
Forward Link Supplemental (F-SCH) Channel
Assignment and Release 43
F-SCH Rate and Duration Allocation 44
F-SCH Continuation 45
Normal F-SCH Termination 45
Early F-SCH Termination 45
Reverse Link Supplemental (R-SCH) Channel
Assignment and Release 46
R-SCH Rate Allocation 46
R-SCH Normal Termination 47
R-SCH Early Termination 47
Load Balancing 47
Dual 3G/2G deployments 47
Conclusions 48
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4 System Deployment
Overview 1
Spectrum Use: Carrier Assignments and Guard Band 3
Cellular Band 3
General Considerations 3
Frequency Planning for Systems with 3G1x and AMPS 7
PCS Band 9
Preferred Channels 12
2G/3G1x Spatial and Frequency Design 14
Coverage (Spatial) Design: Overlay and Greenfield 14
Frequency Design 16
Estimating Capacity: Mix of 3G1x Voice and 2G Voice 17
Planning: Mixed v. Dedicated Carriers for 3G1x 19
Accurate mixing proportions. 19
Maximum total capacity. 20
Efficient Use of Channel Elements 21
Conclusions 22
Mixed 3G1x Voice/Data Capacity and Coverage 23

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mwo1974

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