# Cell splitting Increase [frequency reuse](frequency%20reuse.md) More aggressive reuse means more users you can support.  Repeat the [frequency reuse](frequency%20reuse.md) pattern on a smaller scale within the cell. Cell area is a bit different. ## Method Split each cell into cells with smaller radius with the same reuse pattern. This shortens the inter-[base station](Base%20station.md) distance from R to R/2 (halves the distance) ## Why do this? Depends on the traffic. After cell planning - e.g. in some urban regions you might need cell splitting to give access to more users. ## Advantages 1. Increase number of times each frequency channel is reused 2. Lower mobile [TX](Transmitter.md) power (save battery life) ## Drawbacks 1. More [base stations](Base%20station.md) 2. Different [TX](Transmitter.md) power for different cells (inconsistent - makes analysis more complicated)  4. More [handoff](Handoff.md) traffic 5. May need to split all frequency [channels](../RF%20Chip%20Design/channels.md) in a cell into multiple groups, some for fast moving users (on old large cells) and some for slow moving users on the new small cells #unclear [^1] # References [^1]: [TELE4652-lecture-01](../../03%20-%20University/TELE4652/Lectures/TELE4652-lecture-01.pdf)