Answer:

In any coverage area, the source of income increases for the service providers as increases the number of subscriber.  Therefore to increase the number of subscriber,service provider used capacity expansion technique which is used for expands the cellular network capacity. There are basically four methods to expand the capacity …

Cellular capacity and coverage improvement can be done through four major techniques they are

1. Cell Splitting: It is the technique of splitting the congested cells (macrocells) into microcells to increase the capacity and coverage. The umbrella technique is used. It is used to increase the frequency of use.
2. Cell Sectoring: …