JPL's Wireless Communication Reference Website

Chapter: Cellular Telephone Networks
Section: Frequency reuse

Cell Sectorization

One way to increase to subscriber capacity of a cellular network is replace the omni-directional antenna at each base station by three (or six) sector antennas of 120 (or 60) degrees opening.

Each sector can be considered as a new cell, with its own (set of) frequency channel(s).

The base station can either be located at

The use of directional sector antennas substantially reduces the interference among co-channel cells. This allows denser frequency reuse.

Sectorization is less expensive than cell-splitting, as it does not require the acquisition of new base station sites.

JPL's Wireless Communication Reference Website Jean-Paul M.G. Linnartz, 1993, 1995.