In-building Solutions (IBS), Distributed antenna system (DAS)

IBS concept


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An In-Building solutions (IBS), commonly builded in conjunction with a distributed antenna system (DAS), is a telecommunications solution which is used to extend and distribute the telecom signal of a given mobile telecom operators within a building. Below ground level, large buildings and high rises are examples where mobile phones are unable to properly reach the carrier’s macro or outdoor network. In these environments, the in-building solutions will connect to the carrier’s signal source which is typically a bi-directional amplifier or a base transceiver station (BTS). This signal source transmits (and receives) the mobile network operator’s licensed radio frequency. This frequency is then transported within the building with coaxial cable, optical fiber or Category 5e/Category 6 twisted pair cable. In-building coverage antennas are strategically placed to provide the best overall coverage for users.

distributed antenna system, or DAS, is a network of spatially separated antenna nodes connected to a common source via a transport medium that provides wireless service within a geographic area or structure. DAS antenna elevations are generally at or below the clutter level and node installations are compact. A distributed antenna system may be deployed indoors (an iDAS) our outdoors (an oDAS).



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