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Content
FDD-LTE site selection FDD-LTE network simulation FDD-LTE spectral efficiency |
FDD-LTE network deployment strategy
The process of FDD-LTE
network planning
Information collection
- Information collection is to gather any information relate to LTE network proposal, such as:
- Operator’s requirements
- Operator’s existent network sites density and distribution
- The frequency band and bandwidth available for LTE system
- The environment information of the city to be covered
- Subscribers and traffic model forecast
- Digital map
- ….
Deployment strategy
Requirements and targets
Propagation model
calibration
Radio network design
Site selection and
survey
- Base on the network design result of cell range or inter-site distance
- Base on existent network site distribution information or other candidate site, select fit legacy site to reuse or add new site.
- Site selection can be run by tools or manually.
Coverage prediction and
simulation
- Parameters setting
- Coverage prediction
- Monte carlo simulation
The process of FDD-LTE
network planning
Site Selection
- How to process so many candidate sites and so large area
- How to prioritize covered POI
Site Selection Principle
- Inter site distance following network design result.
- Preference for the existing base station
- Try to select the ideal honeycomb structure of the site
- The selected site should be close to important areas and dense areas
- Antenna must have enough isolation space to avoid interference between systems
- Try to avoid select very high build or hill as site address in urban area
Manual site selection
Site Selection Method
FDD-LTE network planning
flow
Planning Parameters
Propagation model
Network information
Service information
Traffic
mix
Signal Level Coverage
Prediction
RS receive level
prediction
Average throughput
prediction
Signal
Level Coverage Prediction
Other coverage
prediction
Monte Carlo simulation
Signal quality
prediction
Throughput prediction
Other coverage
prediction
Evolution of Speed
LTE Frequency and
Bandwidth
Flexible Bandwidth
LTE Spectrum Defined by
3GPP
Different bandwidth and
antenna, different speed
Spectrum efficiency
Glossary
- CBD: Central Business District
- QOS: Quality of Service
- RAB: Radio Access Bearer
- CW: Continuous Wave
- POI: Point of Interest
- RNP: Radio Network Planning
- DU: Dense urban
- SU: Suburbs urban
- RU: Rural urban
- MU: Medium urban
- SE: Spectrum Efficiency
- ESE: Effective Spectrum Efficiency
- ISD: Inter-station Distance
- CPRI: Common Public Radio Interface
- QPSK: Quaternary Phase Shift Keying
- QAM: Quadrature Amplitude Modulation
- CDF: Cumulated Distribution Function
End of Course