Private LTE (over 3.5GHz CBRS) Network Solution

Solution Overview

Most private wireless networks today use Wi-Fi as it is fast and easy to deploy. In many cases, Wi-Fi will remain a good solution. Private LTE is based on technologies developed for wide-area mobility and scaled down to be deployable by private organizations. This gives LTE some advantages over Wi-Fi particularly as it relates to performance and mobility that can help address more demanding use cases.

Service providers are using Citizens Broadband Radio Service (CBRS) to replace last-mile fiber access and deliver fixed wireless services to end customers while augmenting existing capacity. Enterprises and managed service providers can utilize the 3.5 GHz band to deploy private LTE for IoT connectivity and deliver a quality of experience that Wi-Fi cannot guarantee. With indoor LTE speeds theoretically reaching 1 Gbps, the economics of the technology are much better than those of distributed antenna systems, according to CBRS experts, with better speed and consistency of service than Wi-Fi.

Enterprises undergoing digital transformation can use CBRS to improve in-building Wi-Fi connectivity with a private LTE network. This high-speed, low-latency local area network allows them to connect all devices and “things” (robots, drones, sensors, machinery, buildings), automate operations, gain insights from customers and invent new business models that position them to lead the digital economy.

The WWT ATC Private LTE (over CBRS) network solution consists of two parallel labs, with components from the following industry-leading partners:

Lab1: Our solution is comprised of CORE and RAN components, shown in the matrix above, where JMA Wireless is the xRAN provider. DRUID delivers a light-weight all-in-one service including a virtual, evolved packet core, IP multimedia system and home subscriber server for subscriber management, within a single virtual machine.

Lab2: Our solution is comprised of the CORE and RAN components, shown in the matrix above. VMware vSphere, (with SR-IOV enabled interfaces), hosts the virtual evolved packet core. The virtual evolved packet core provides Control and User Plane Separation(CUPS) virtual machines, along with a Home Subscriber Server provided by NetNumber, to provide subscriber Management. This lab is useful to highlight use cases that require low latency and high throughput.  

Before You Get Started

CBRS offers organizations a new way of deploying wireless, and it has a path forward with 5G specs in the works. Still, planning is key. And well-defined use cases — anything from better connectivity to supporting augmented reality — will be important. 

Goals & Objectives

The purpose of this lab is to highlight why LTE is now a highly attractive technology for private wireless networks across a wide range of enterprise verticals. Users will be able to access the private LTE network deployed in WWT's ATC and gain insight to the various components of the network solution.

In general, private LTE networks are designed with machine communications as the primary user in mind. However, one of the strengths of LTE is a multi-service capability that supports multiple use cases all on a common infrastructure. 

Examples of use cases for private LTE networks include: 


Automation & Industry 4.0: 

  • Factory-floor robotics e.g. wireless robotics
  • Logistics and Warehousing e.g. pick-and-pack machines

Mission-Critical Services

  • Monitor and control critical infrastructure e.g. electricity distribution grids, power plants etc
  • Public safety agencies often need closed user group ad hoc networks at emergency scenes (e.g. FirstNet)
  • Government and miltary agencies want dedicated, highly available networks at their facilities

Venue Services

  • Public venues e.g. airports, stadiums, hospitals, ports have many users with requirements for fast, highly secure access.

Hardware & Software


DELL PowerEdge R740 (vRAN Server Infrastructure)

- 2 x Intel Xeon Gold 6254 3.1G 

- 192GB RAM 

- 2 x 1TB HDD 

- 2 x 240GB SSD 

- 1 x Intel XXV710-DA2 10-Dual Port 25Gb 

CISCO UCS C220 M5 (vEPC + vHSS + vIMS Server Infrastructure)

- 2 x Intel 6248 2.5GHz 

- 384GB RAM 

- 2 x 960GB SSD 

- 1 x Cisco VIC 1457 Quad Port 10/25G SFP28 MLOM 

- 1 x Intel XXV710-DA2 10-Dual Port 25G NIC 

- 1 x Intel XL710 dual-port 40G QSFP+ NIC 

JMA Wireless Radio (CBSD)

- 2 x TEKO XRAN Radio Units

- 2 x IV02OMI136‐M4 (NWAV™ Wide Band OMNI|MIMO Antenna)

Leaf Switch

- Nexus 9300 with 48p 10/25G SFP+ and 6p 100G QSFP28 

Management Switch

- Catalyst 2960-X 48 GigE, 2 x 1G SFP, LAN Lite 

End User Device

- Cradlepoint AER 2200


- JMA Wireless xRAN 

- Druid Raemis (Lab 1)

- VMware ESXi 6.7

- NetNumber vHSS (Lab 2)

- Cisco vEPC (Lab 2)