By now, you have might interacted with our Network Planner, helping you figure out the total number of indoor and outdoor CBRS LTE access points (AP) you might need at your facility given size, geo-location, density and performance requirements. In this article, we are diving deeper into the data behind the scenes by walking you through two example scenarios we have evaluation with the Planner.

Key takeaways

  • If you are designing for coverage, CBRS spectrum availability does not impact the number of APs required in your network. In standard mode of operation, since all traffic flows in the download and upload direction to an LTE radio is scheduled by the infrastructure, even a single channel of 10MHz across all APs does the trick.
  • If you are designing for capacity, as you move from the maximum possible 150MHz of CBRS spectrum availability across your entire network to 80MHz - which happens to be the worst case scenario for any environment in the United States - you are looking at about only 10-15% increase in the total AP count in your network.

Indoor facility scenario, with the Network Planner

  • Facility type: Factory
  • Indoor facility size: 1M sqft
  • Simultaneously active devices: 2500
  • Estimated indoor AP count for coverage: 43
  • Estimated indoor AP count when designing for capacity: see chart below
  • Average download speed per device assumed for capacity design: 3 Mbps
  • Average upload speed per device assumed for capacity design: 1 Mbps
CBRS LTE network capacity for a factory, indoors

Outdoor facility scenario, with the Network Planner

  • Facility type: Shipping Port
  • Indoor facility size: 7.5M sqft
  • Simultaneously active devices: 750
  • Estimated outdoor AP (with external omni antennas) count for coverage: 22
  • Estimated outdoor AP count when designing for capacity: see chart below
  • Average download speed per device assumed for capacity design: 1 Mbps
  • Average upload speed per device assumed for capacity design: 4 Mbps
CBRS LTE network capacity for a shipping port, outdoors

Perhaps somewhat obvious but important to note: not every AP in a CBRS LTE network gets assigned the same set of frequency channels to choose from as it interacts with the FCC certified Spectrum Access Service (SAS) systems in the US for spectrum allocation. If some of your APs are near other CBRS based LTE networks, compared to other APs in your network, they might get assigned a separate set of channels to choose from - as they have to operate interference-free per FCC regulations. Celona's Self Organizing Network (SON) functions are already designed to take care of channel assignments on Celona's CBRS LTE access points behind the scenes but it's still worth a mention.

If you are looking for a similar set of practical insights on coverage and performance characteristics of CBRS based LTE access points, make sure to read our articles here and here, respectively. For any questions, you can get in touch with us using the chatbot on this page or via email at hello@celona.io. And when you are ready to kick the tires:

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