Citizen’s Broadband
Radio Service (CBRS)
2.5x more open spectrum than WiFi
New Innovation Band
A New License Free Band Available Now
Interference Free
Cellular Network Like Topology

CBRS (Citizen’s Broadband Radio Service) is a very large swath of license free 3.5 GHz spectrum newly released by FCC to promote the development of new applications. The FCC calls it an “Innovation band” with the intention that it will ignite the development of new use cases, like what WiFi did over 20 years ago. Because CBRS band’s shared access is managed, it provides interference protection.

Smart Radio for CBRS

Smart Radio provides resilient, low latency, long-range, high-throughput link to implement industrial-grade private wireless mobile mesh Networks in license free band.

Doodle Labs has extended it’s patented Mesh Rider technology to leverage its capabilities in the license free CBRS band. The Smart Radio enables organizations to deploy license free private wireless as easily as WiFi. For more information, please visit Smart Radio home page.

FCC Certified

Fully certified with all regulatory certifications

SAS Integration

The Smart Radios are per-certified to work with Google SAS and  Federated Wireless SAS to make this a truly plug-and-play operation.

GA and PAL Access

Supports both General Access and Priority Access licenses

Device Portfolio

Full portfolio of Short Range (CBSD-A), Rural Gateways (CBSD-B) and End User Devices (EUD)

CBRS Anatomy

CBRS Anatomy

The figure shows the Point to Multi-Point Network architecture for the license free CBRS band. At power up, every CBSD (Citizens Broadband Radio Service Device) is required to contact the shared Spectrum Access System (SAS) over the Internet and receive the operating parameters like channel and the RF power limit. The SAS provides this authorization in accordance with other CBSDs operating in the area. Once the CBSD receives the authorization from the SAS, it can then instruct the downstream EUD (End User Device) to begin the operation.

Doodle Labs has the complete portfolio of CBSD-A (self-installable) for urban use cases, high powered CBSD-B (professional installation) for rural-outdoor settings. Additionally the corresponding EUDs are available.

Scalable Network Architecture

Cellular Network like Architecture

The CBRS topology is modeled after the cellular architecture. The SAS assigns non-overlapping/non-interfering channels to the adjacent cells. This greatly increase the ability to deploy large private networks without the worry of interference.

CBRS Use Cases

Two doctors looking at a tablet and pointing at it.
Private Wireless for Healthcare

Avoid the overcrowded hospital WiFi and run mission critical applications on Private Wireless Network

Warehouse Automation

Low latency, High throughput Private Wireless Network for Autonomous Robots

Airport connectivity_Pancake
Private Wireless for Ports

Improve productivity with video collaboration for field operations at the Ports

Private Wireless for Greenfields

Improve productivity on locations without any communication infrastructure.

Summary of Technical Specifications

A RM-3625 indoor/outdoor link performance measured in MHZ.

3 dBi Antennas on CBSD-A and EUD, 10 dBm Fade Margin, 60% Fresnel zone clearance

17 dBi Antennas on CBSD-B on both ends, 20 dBm Fade Margin, 60% Fresnel zone clearance

Overview of the technical features of the Smart Radio for CBRS. Please consult the individual model datasheets in the Technical Library for details.

Frequency Range

3550-3700 MHz

Radio Configuration 2×2 MIMO
Evaluation Kit Antennas, Breakout board, Cables
Transmit RF Power 23-30 dBm (Model dependent)
Receive Sensitivity -100 dBm
Channel Bandwidths (Software Selectable) 3, 5, 10, 20, 40 MHz
Max Data Throughput (TCP/IP) 50 Mbps
Max Operating Range (Indicative) 20 Km (Recommended), (Max field demonstrated range >100km)
Wireless Data Encryption 128-bit AES hardware data encryption
256-bit AES software data encryption (FIPS 140-3 certified)
Wireless Waveform Mesh Rider
Operating Modes Mesh, AP, Client, Transparent WDS Bridge, Gateway
Command & Control channel Ultra-Reliable Low Latency Channel (URLLC). Latency 1-10 ms (Typical)
Video Channel Optimized video streaming with Unicast and Multicast transmission
Mesh Router Self-Forming/Self-Healing, Peer to Peer
Remote Radio Management Centralized Mesh configuration, Web GUI (HTTPs), SSH, SNMP and JSON-RPC
Operating Voltage 6~24V DC or 6~42V DC (Model dependent)
Form Factors Meticulously designed form factors for various use case. See details

Embedded: 65 x 57 x 12 mm, 70 grams
Wearable: 70 x 115 x 15 mm, 150 grams 
External: 148 x 137 x 58 mm, 540 grams

Temperature range (Operating) -40°C to +85°C
Rugged Features Compliant to MIL-STD-810H for high shock/vibration environments 
Extreme Reliability, IPC Class 2 standard with Class 3 options
Extended lifespan with 7 years’ planned availability
Radio Certifications Certified by FCC for license free operation in USA

* Specifications are subject to change without prior notice.

Design-In Documents

Doodle Labs provides an extensive set of documents and support to simplify integration of the Smart Radio. Please visit our Smart Radio Technical Library for more information.

Additional Industry Resources

After almost 5 years of planning, the commercial CBRS deployments have just begun in Q1 2020. The industry is excited to take advantage of the opportunities presented by such a large swath of unlicensed spectrum becoming available (For reference, CBRS is 150 MHz while 2.4 GHz WiFi is only 70 MHz wide band). There are many things to learn and many experiences to share. Here we have curated some resources that we think may be useful in your research.

  1. An Overview of the Citizens Broadband Radio Service – Video Tutorial by Commscope (25 minutes)
  2. FCC’s Part 96 governing the use of CBRS band. For most users, the Subparts C and D are most relevant.
  3. CBRS Baseline Specifications Overview – A webinar explaining the details of the CBRS specifications. Wireless Innovation Forum.
  4. CBRS Standards committee – The Spectrum Sharing Committee (SSC) serves as a common industry and government standards body supporting the development and advancement of CBRS spectrum sharing technologies.

Doodle Labs

Partner with us on your next Private Wireless Network project. For over 20 years, we’re constantly pushing the capabilities of wireless technology. We will bring our full expertise to provide you a best-in-class wireless solution.