Improving Capacity and Coverage in Cellular Systems

Improving Cell Capacity and Coverage can be done through four major techniques they are Cell Splitting, Cell Sectoring, Repeaters and Micro Cell Zones. Cell splitting (or cell partitioning) is the technique of splitting the congested cells (macro cells) into micro cells to increase the capacity and coverage. The umbrella technique is used. It is a method used to increase frequency reuse. Cell sectoring is using multiple Directional antennas instead of using a single Omni-directional antenna. The Reuse ratio has impact on the capacity of the cells S/I ratio varies proportional to the Reuse ratio. Repeater (or Re-transmitter) is used for extension of coverage. Micro Cell zone is based on using the sectored cells and uses Lee’s Micro Cell Zone concept. Improving capacity helps in increasing the number of channels(or number of users).