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In-building coverage is a significant challenge for first-responder emergency communications, according to an International Fire Chiefs Association report based on a Safer Buildings Coalition survey conducted in 2018. According to the report, 98% of emergency responders said that they were having problems with their communication because of dead spots in a building, while 56% said they were experiencing complete communication failures at sites.
There are several factors that cause these in-building communications difficulties for public safety, beginning with the reality that many buildings prevent the receipt or transmission of LMR (Land Mobile Radio) and FirstNet messages, based on construction elements and/or building configuration. Cellular and LMR towers may do an excellent job at transporting the signal, but building materials like rebar, cement, brick, LEED glass, and metal can prevent the signal from reaching a first responder’s device…
