ABSTRACT
Contents 4.1 Introduction ................................................................................. 116
4.1.1 Quality, Capacity, and Economic Issues of Network Design .... 116 4.1.2 Radio Planning Objective .................................................... 117 4.1.3 WCDMA Network Planning Process .................................... 119 4.1.4 Challenges in WCDMA Network Planning ........................... 120
4.2 WCDMA Radio Network Planning Approaches ................................ 120 4.2.1 Path loss-based Approach .................................................... 120 4.2.2 Simulation-based Approach ................................................. 125 4.2.3 Site Selection ..................................................................... 129 4.2.4 Propagation Modeling ......................................................... 132 4.2.5 Link Budgets ...................................................................... 135
4.2.5.1 Uplink Service DPCH .......................................... 136 4.2.5.2 Downlink Service DPCH ...................................... 140 4.2.5.3 Downlink CPICH ................................................ 145 4.2.5.4 Evaluation and Validation ..................................... 145
4.2.6 Downlink Common Channel Powers .................................... 147 4.2.7 Downlink Transmit Power Calculations ................................ 153
4.2.7.1 UE Moves from RRC Idle to CELL DCH ............. 154 4.2.7.2 UE Moves from CELL FACH to CELL DCH ...... 156 4.2.7.3 Configuration of an Existing Radio Link
is Changed ........................................................... 158 4.2.7.4 Soft Handover Radio Link Additions ...................... 160
4.2.8 Uplink Open Loop Power Control ....................................... 161 4.2.8.1 NodeB Commissioning Parameters ......................... 162 4.2.8.2 PRACH Concepts and Approaches ......................... 162 4.2.8.3 DPCH Concepts and Approaches ........................... 165
4.2.9 Soft Handover .................................................................... 167 4.2.10 Scrambling Code Planning .................................................. 174
4.3 Site Deployment and Configuration ................................................. 177 4.3.1 Site Selection ..................................................................... 178
4.3.1.1 Candidate Sites and Permitted Configurations ......... 179 4.3.1.2 Optimization Algorithm ........................................ 179 4.3.1.3 Performance Evaluation and Comparison ................ 180
4.4 Optimization of Cell Configuration ................................................. 182 4.4.1 Optimization Parameters and Targets ................................... 182 4.4.2 Advanced Search Algorithms ................................................ 183 4.4.3 Optimization Process .......................................................... 185
4.5 Summary ...................................................................................... 187 References .............................................................................................. 187
4.1 Introduction This section introduces the impacts and targets of network planning. By reviewing the most significant challenges such as traffic demand and QoS (Quality of Service) criteria, the key WCDMA (wideband code division multiple access) network planning process is explained.
