What are the advantages of sectorized cells?

8. What are the advantages of sectorized cells?

Advantage of Sectorization:

The total number of available channels can be divided into sets (subgroups) depending on the sectorization of the cell configuration: the 120◦-sector system, the 60◦-sector system, and the 45◦-sector system. A seven-cell system usually uses three 120◦sectors per cell, with the total number of channel sets being 21. In certain locations and special situations, the sector angle can be reduced (narrowed) in order to assign more channels in one sector without increasing neighbouring-channel interference. Sectorization serves the same purpose as the channel borrowing scheme in delaying cell splitting. In addition, channel coordination to avoid co channel interference is much easier in sectorization than in cell splitting. Given the same number of channels, trunking efficiency decreases in sectorization.