The Lucent Cellular Optimization Tool
Why “Ocelot”?
The Problem
We can change antenna parameters:
Current Practice: Drivetests
Ocelot Approach
Performance measures
Technical Challenges
Outline
Traffic modeling
Traffic modeling : geometric operations
Imported map
Phone traffic on roads
Why we need clipping
Autoboundary
?-shape
Minkowski Sum
Culled Autoboundary
Simplify mesh via edge contractions
Simplify, continued
Simplify: cell ownership
Result of simplify
Traffic modeling: fake maps
An automesh
Automesh, continued
Voronoi + autoboundary
CDMA Cellular Systems
System modeling: why you can’t get through
Geometric cells
More realistic cells
Pilot coverage, before optimization
The tradeoff curve
Pilot coverage after optimization
Cells after optimization
System Modeling: Reverse-link interference
Power control and Reverse-link interference
The interference model
The interference model, cont.
Phone power limits
But also: Poisson loads
The GUI
The GUI, internal
The GUI: theory challenges
Other geometric applications
Other mathematical applications
Conclusions
Email: clarkson@lucent.com
Home Page: http://ocelot.bell-labs.com