CBRS Private
Understanding CBRS Private
Enterprise Private Cellular Deployments
Traditionally, enterprise wireless networks relied almost entirely on Wi-Fi. While Wi-Fi is cost-effective and easy to deploy, it operates in crowded, unlicensed bands (2.4 GHz and 5 GHz) that are subject to interference. In large industrial settings, such as automated warehouses, manufacturing plants, shipping ports, and hospital campuses, Wi-Fi often struggles with handover reliability (roaming), coverage density, and predictable latency. A CBRS private network addresses these issues by bringing cellular-grade LTE or 5G technology inside the enterprise perimeter.
A CBRS private network uses the shared 3.5 GHz band. Because the spectrum is coordinated by the SAS, it is free from the unpredictable interference of standard unlicensed bands. By deploying private small cells (CBSDs) and their own Evolved Packet Core (EPC) or 5G Core (5GC), enterprises establish a completely isolated wireless network. The network operates under cellular protocols, which feature active quality of service (QoS) scheduling, seamless handover algorithms, and high-security SIM-card-based device authentication.
Architecture and Key Benefits
The architecture of a CBRS private network consists of three main components:
- Radio Access Network (RAN): Indoor and outdoor Category A and Category B small cells (CBSDs) installed throughout the facility.
- Core Network (EPC/5GC): The control software that manages routing, mobility, and sessions. This core can be deployed on-premises for ultra-low latency or hosted in the cloud.
- SAS Integration: Active internet connection linking the CBSDs to a Spectrum Access System provider to secure active channel leases.
The benefits include coverage ranges up to 4 times greater than Wi-Fi, deterministic latency under 15 milliseconds for robotics control, and physical SIM/eSIM security that prevents unauthorized devices from connecting to the network.
Key Mathematical Relations
Technical Specifications Comparison
| Performance Indicator | CBRS Private Network (LTE/5G) | Enterprise Wi-Fi 6 / 6E | Public Carrier Network |
|---|---|---|---|
| Spectrum Access | Shared mid-band (SAS managed) | Unlicensed (uncoordinated) | Licensed (exclusive carrier) |
| Security Model | SIM/eSIM hardware-based | WPA3 password/certificate | SIM/eSIM hardware-based |
| Coverage Range (Outdoor) | Excellent (up to 2-3 miles) | Moderate (up to 300-500 feet) | Excellent (macro cell) |
| Handover / Roaming | Seamless (cellular-managed) | Device-dependent (prone to drops) | Seamless (cellular-managed) |
| Data Control & Cost | Enterprise owns all data; no fees | Enterprise owns all data; no fees | Carrier charges per GB/device |
Frequently Asked Questions
What devices support CBRS private networks?
Most modern smartphones (iPhone 11+, Samsung Galaxy S10+), tablets, industrial barcode scanners, and IoT gateways contain modems that support Band 48/n48, allowing them to connect via a private SIM card.
Do you need a SIM card for a private CBRS network?
Yes. Because CBRS uses cellular technology (LTE or 5G), all connecting client devices must have a physical SIM card or a digital eSIM provisioned by the enterprise's private core network.
What is the latency expected on a private 5G CBRS network?
Private 5G CBRS networks can achieve latencies of less than 15 milliseconds, which is ideal for real-time automated guided vehicles (AGVs), remote-controlled cranes, and factory floor robotics.