Small cell definition
A small cell is a radio access point with low radio frequency (RF) power output, footprint and range. It is operator-controlled, and can be deployed indoors or outdoors, and in licensed, shared or unlicensed spectrum.
Small cells complement the macro network to improve coverage, add targeted capacity, and support new services and user experiences. There are various types of small cell, with varying range, power level and form factor, according to use case. The smallest units are for indoor residential use; the largest are urban or rural outdoor picocells.