Wiktionary
n. 1 (context biology English) A simple cell consisting of a nucleus and protoplasm within a membrane 2 (context technology English) A small, local cell in a mobile phone network
Wikipedia
A microcell is a cell in a mobile phone network served by a low power cellular base station (tower), covering a limited area such as a mall, a hotel, or a transportation hub. A microcell is usually larger than a picocell, though the distinction is not always clear. A microcell uses power control to limit the radius of its coverage area.
Typically the range of a microcell is less than two kilometers wide, whereas standard base stations may have ranges of up to 35 kilometres (22 mi). A picocell, on the other hand, is 200 meters or less, and a femtocell is on the order of 10 meters, although AT&T calls its femtocell that has a range of , a "microcell". AT&T uses "AT&T 3G MicroCell" as a trade mark and not necessarily the "microcell" technology, however.
A microcellular network is a radio network composed of microcells.
Usage examples of "microcell".
The backup microcell, used to refresh the pathways while the robot was being serviced, had long since been exhausted and the pathways had long ago decayed.
That little round affair that looks like a button is really a bank of fifteen microcells matched to my specifications.