Cell splitting is the process of subdividing a congested cell into smaller cells, such that each smaller cell has its own base station and a correspondingly reduced antenna height and reduced transmitter power.
What You Need To Know About Cell Splitting
- A congested cell is subdivided into smaller cells.
- Cell splitting increase the capacity of the cellular system since it increases the number of times that channels are reused.
- By defining new cells which have a smaller radius than the original cells and by installing these smaller cells (microcells) between the existing cells, capacity increases due to additional channels/unit area.
- The cell is divided into a smaller cell.
- In order to maintain the S/I ratio in cell splitting, the transmittance power must be reduced.
- In order to improve the capacity, the radius of the cell is decreased and the co-channel reuse ratio D/R is kept constant.
- Cell splitting decreases the number of handoffs and call progress can be smoothly done because large macro-cell are dedicated to high-speed traffic.
In cell sectoring, a single omni-directional antenna at base station is replaced by several directional antennas, each radiating within a specified sector. Cell sectoring is done mainly to reduce factors such as co-channel interference.
What You Need To Know About Cell Sectoring
- It basically involves replacing an omni-directional antenna at the base station by several directional antennas.
- By using directional antennas power is transmitted in single desired direction decreasing number of interfering co-channel cells and co-channel interference.
- Cell sectoring is the technique for decreasing co-channel interference and thus increasing system performance by using directional antennas.
- The cell is divided into 120o and 60osectors.
- By use of directional antenna, cell sectoring improves the S/I ratio.
- In order to improve capacity, the radius of the cell is kept constant and the co-channel reuse ratio D/R is decreased.
- Cell sectoring increases the number of handoffs and decreases the coverage area of a group of channels.