What is a CEL-FI QUATRA Supercell?

A Supercell® is created when a Nextivity CEL-FI QUATRA cellular DAS uses the small cell of one or more carriers for the donor signal. A Supercell distributes uniform signals from the small cell(s) throughout a building without coverage gaps. A QUATRA Supercell® is useful in densely populated sites that will benefit from the additional capacity delivered by a dedicated small cell donor. Other use cases for a Supercell include these scenarios where the off-air signal from the macro network isn’t sufficient as a donor signal source:
  • a congested macro network in metro areas results in insufficient capacity and/or poor signal-to-noise ratio
  • buildings taller than the 25-30 ft, generally in metro areas
  • pilot pollution from too many visible cell sites, with no dominant donor cell
  • an extremely weak signal outside the building in rural, mountainous, or other areas with external obstacles
  • no place to attach external donor antennas at optimum locations or building owner won’t allow them
  • LEED or shielded buildings or rooms and energy efficient windows in combination with any of the other scenarios above
  • Carrier reluctance to approve a rebroadcast agreement due to concerns with overloading the macro network
Many major carriers offer enterprise small cells as the solution to the above situations. While a small cell can deliver the additional signal capacity to a building, small cell deployment can be challenging and not a plug-and-play fix. Depending on the carrier and the deployment model, users may require a dedicated data feed for each small cell, creating a recurring expense, for the owner. Other potential deployment complications include:
  • Interference between multiple small cells in a space
  • coverage gaps on the edges or between the coverage bubbles of each unit
  • technical complexity
  • slow delivery times
  • high costs
  • single operator only
The CEL-FI QUATRA Supercell eliminates these issues, creating a flexible, scalable solution for coverage and capacity at a fraction of the cost of legacy DAS.

Nextivity QUATRA Supercell®
Any small cell can be used with QUATRA, as long as the supported bands of the small cell match the bands supported by QUATRA. Each QUATRA NU can be tethered to one to four carrier small cells. For larger buildings, multiple NUs can be installed, each connected to up to six CUs.