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smart cell

The term smart cell is used in mobile networks of the 4th and 5th generation (5G) for intelligent radio cells. Smart cells are smaller radio cells with a shorter range, which can be classified as microcells, picocells and femtocells

. Smart radio cells are designed to provide optimum coverage of a specific reception area in terms of transmission technology. Depending on the indoor or outdoor application, they have different ranges, ranging from a few meters to two kilometers and beyond. Since the range of the base stations depends on the transmitting power and the free-space attenuation, smart cells can transmit indoors with transmitting powers of 100 mW, in the range of picocells with up to 250 mW at distances of up to 250 m, and at greater distances in microcells with transmitting powers of up to 5 W. As far as free space attenuation is concerned, it is much higher for 5G networks than for Long Term Evolution (LTE), since 5G transmits in the frequency range above 3.6 GHz

. The number of subscribers that can be logged in depends on the radio cell size. Microcells, for example, can be used by several hundred subscribers at the same time, whereas femtocells can only be used by around 20. To increase the connection density in inner-city conurbations, smart cells in 5G mobile networks can be configured to work with many picocells instead of a few microcells. Such a concept also extends battery life because mobile devices need to use less transmit power to reach the nearest base station, which is in close proximity. Another advantage of networking with many microcells is the ultra-short latency times, which is enormously important for the Internet of Things (IoT) and a prerequisite for Ultra Reliable Low Latency Communications (URLLC).

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Englisch: smart cell
Updated at: 30.05.2020
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