However, the very BYOD trend that is bringing employees' own mobile devices into the workplace could make Radio Dots less attractive in some cases.
"What Ericsson is showing is a very operator specific solution, but if you have a deployment area where workers are spread out among four different mobile operators, the value of that solution is diminished," Schoolar said. "Also it locks a business into a specific operator, and that business may want more flexibility."
With a DAS, by contrast, it's typically easier to bring multiple carriers into the system, said Peter Jarich of Current Analysis. A Radio Dot System would be easier to install as an overlay, but in new construction, including a DAS is not as big a burden, Jarich said.
At least two major carriers are interested in Radio Dots. AT&T is participating with Ericsson in Wednesday's announcement, and Verizon Wireless also plans to test the system. "We have seen it, we like it and we look forward to testing and trialing it," Verizon spokesman Tom Pica said via email.