In-Building Communications Specialist
Communication systems for high-rise buildings need to support a range of users. These include the staff working for the building owner, the businesses that operate in the premises, and any members of the public who might be present during an emergency. However, tall buildings create many radio coverage problems. Smartcom presents the issues to consider when choosing communication solutions for skyscrapers
Building owners need to consider the following key issues when evaluating radio communication solutions for any structure:
Who are the users? How many group or department required to communicate?
How much radio communication channels is required?
What are the available methods of providing radio coverage?
What are the total lifetime costs of the solution?
Radio coverage considerations
Establishing radio coverage inside buildings differs from planning outdoor coverage because the radio waves propagate very differently in confined areas.
For example, the wall, floor, and ceiling structures, as well as furniture attenuate the radio signals by tens of dB. In other words, radio signals attenuate rapidly.
For example, the signal level in the room of the emitting antenna may be excellent, but poor in a nearby room.
On one hand, openings and gaps inside buildings make it easier for radio signals to propagate – depending on their size in function of the signal wavelength (and the frequency band). On the other hand, the building materials (concrete, metal, dry wall etc.) will cause attenuation, reflection and diffraction during the signal propagation, depending on their characteristics at the operated frequency band.