Discussion
Why are cells smaller in a city than in the countryside?
Answer: D
Each cell can carry only so much traffic, so dense demand is met by dividing the area into many small cells and reusing the frequencies more often. Higher path loss from clutter reinforces the same conclusion. Regulation does not set cell size, and reflection scatters signals without neatly confining them. A network limited by capacity rather than coverage is designed by quite different reasoning, and recognising which regime applies is the first step in planning one.
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